Sebastian takes on the appearance of a tall, handsome adult with black hair, red eyes, and pale skin. He typically dresses in a butler's outfit, which consists of black trousers, a six-button double-breasted tailcoat, and a gray vest. He has the Phantomhive crest on his shirt cuffs and tie. Sebastian also sports white gloves, a pocket watch, and a chained silver lapel pin bearing the Phantomhive crest, traditionally worn by the house's head butler.
Details of Sebastian's demonic form include high-heeled stiletto boots, sharp claws, glowing fuchsia irises, slit pupils, and longer, sharper teeth, with dark wings.
Sebastian is a dedicated butler to Ciel Phantomhive and upholds a strong sense of duty to his master and household. He faithfully follows and carries out every one of Ciel's orders, while ensuring that the Phantomhive house runs smoothly. He does not sleep—for demons deem it a form of luxury—and thus, he frequently performs tasks for Ciel at night. One of his quirks is that he will always respond to Ciel's demands with the saying "Yes, my lord."
Sebastian predominantly appears as a courteous and impeccable servant. However, he is, in actuality, callous, heartless, and sadistic; he is ruthless when attacking others on Ciel's orders, and had, at one point, deliberately delayed saving Ciel for his own amusement. Sebastian usually expresses his diabolic nature through his dark, sarcastic humor and inability to see good in anyone. He thinks of his own master as a brat who treats his workers rudely, but he has admitted that he does not dislike the butler lifestyle despite all the troubles he goes through on a daily basis.
Sebastian views money as "rubbish" and "materialistic." He is fluent in French and Latin, enough to teach the latter. He is also proficient in Deutsch (German) and East Franconian, a dialect in Southern Germany.
 Sebastian has a great and mutual distaste for Grim Reapers. Moreover, he profoundly adores cats and had kept at least thirteen hidden in his wardrobe to prevent Ciel from finding out.
Sebastian often contemplates the behaviors and attitudes of human beings. He regards humans in general to be "difficult creatures," but he is fascinated with their struggles and lofty goals. He is intrigued by how seemingly insatiable they are, for they are willing to "drag others down to get what they want, even in death."
Sebastian's real home is in an alternate world that is quite different from the human world. In particular, he mentioned that the creatures kept as pets there are in no way comparable to cats. Sebastian had briefly remarked that he met an ancient Egyptian mummy when it was alive, identified as Smenkhkare who reigned about three thousand years ago. He was also a guest at the Schönbrunn Palace from time to time. He also claims to be responsible for the spread of the Black Death that occurred five hundred years prior. In short, he muses that Ciel Phantomhive's life in comparison would feel like an instant.
Sebastian stated that in the past, he engaged in "messily sampling every dish available," and he has since resorted to only consuming "high-quality" souls. As a result, he has been apparently starving, but he declared that the "dinner" will be much better the hungrier he is.
Three years ago, he was summoned to Ciel Phantomhive when the latter was about to be sacrificed in an occult ritual. After forming the contract with Ciel and placing the seal on his right eye, Ciel ordered him to slay his abductors. Sebastian decided to adopt a "role that is best fit to serve an Earl". Therefore, he assumed the form of a butler until Ciel completes his personal mission of revenge—that is the substance of their contract. In return, Sebastian will receive Ciel's soul. He was then given the name "Sebastian" by Ciel (which used to be his dog's name) for the duration of his duties as Ciel's butler.
Once he finished annihilating the cultists, they went to the Royal London Hospital to meet with Ciel's aunt, Angelina Dalles. There, Tanaka gave him a watch that had been passed down from one Phantomhive butler to the next. After that, Angelina arranged for a carriage to bring them to the ruins of the Phantomhive manor. While Ciel was mourning the deaths of his parents, Sebastian reconstructed the manor.
Ciel and Sebastian then began daily life. He taught Ciel the fundamentals of being an earl; Ciel in turn taught him how a butler fit for the Phantomhive household should act. Sebastian also learned how to properly cope with Ciel's spoiled behavior; from time to time, he had to discipline Ciel. He later attended Ciel's coronation as the Earl of Phantomhive, but he did not observe at a close distance because he saw himself as a mere butler, not family. While they were walking, Sebastian asked Ciel if he was happy with how things were. Seeing Ciel's hesitation, he attempted to devour him. He stopped, however, when Ciel suddenly turned around and stated that he was determined to attain his revenge. He commanded Sebastian to be his sword and shield and bring him victory. Sebastian complied, as he was sure that Ciel's soul would be extremely delicious.
Sometime during the same year, Sebastian was summoned to Ciel's room. Ciel complained of a wobbly tooth that was preventing him from eating his food properly. After examining it, Sebastian decided to forcibly take it out, much to Ciel's chagrin. Ciel attempted to protest against the idea, but Sebastian proceeded regardless, under the impression that he was doing his young master a favor. After the tooth removal, Ciel threw an angry fit at Sebastian. Ever since, he has been unwilling to allow Sebastian to check for cavities in his teeth when they start to wobble.
Black Butler Arc
Sebastian, the butler of the Phantomhive household, wakes up his master Ciel Phantomhive and informs him about the day's schedule. He then proceeds to prepare for the evening's special guest, Chlaus. The bumbling of the other servants almost causes catastrophe, but through Sebastian's quick thinking and even quicker reflexes, he is able to keep things running smoothly.
The following day, Elizabeth Midford pays a visit, and Sebastian helps satisfy her wish to hold a dance party by teaching Ciel how to dance. After Elizabeth breaks Ciel's heirloom ring, Sebastian collects the pieces, fixes the ring, and returns it to him that evening.
A few days after Chlaus's visit, Ciel is kidnapped by a drug dealer named Azzurro Vanel of the Ferro family. When Ciel refuses to supply the information Azzurro is seeking, the dealer orders his snipers to kill Ciel's servants. When a sniper misses hitting Sebastian, he is alerted of their presence. The snipers leave in a vehicle, but Sebastian stops them. After gathering information from them, he kills them by letting them fall off a cliff to their deaths. Furthermore, he informs Azzurro from a car phone that he intends to pick up Ciel. Once he arrives, he is attacked, but he is able to calmly eliminate most of Azzurro's defense, mainly by using silverware as his weapons. Sebastian then enters the room where Ciel is being held and moves to provide the requested ransom. Hidden gunmen inflict what appears to be multiple fatal gunshot wounds on Sebastian, but Sebastian effortlessly recovers and returns the bullets by spitting them out of his mouth. He eliminates all of Ciel's kidnappers, refusing Azzurro's offer of leaving Ciel in exchange for women and money, and returns Ciel home.
Sometime after the incident, Sebastian resumes and carries out his normal butler routine. He assigns Baldroy, Finnian, and Mey-Rin their daily tasks, and he then prepares breakfast and morning tea for Ciel. He wakes Ciel up and is told by him to accommodate the children he invited from Lord Barton's orphanage when they arrive the next day. Sebastian then begins preparations, but he is interrupted several times by the other servants to correct their mess. Soon irritated, he calms himself by briefly visiting a cat and then bakes many grandly decorated treats for the children, which leaves Baldroy, Finnian, and Mey-Rin awed. However, his minutely detailed chocolate model of an earl is missing a head. Sebastian and the servants assume Tanaka is at fault. He tells them to look for Tanaka while he gives Ciel his afternoon tea. In Ciel's study, Sebastian finds a sleeping Ciel, who turns out to be the culprit that stole the chocolate head to eat. He thinks to himself that being a butler is not too bad while scolding Ciel for snacking on the sly.
Red Butler Arc
It is the social season, and Sebastian delivers Ciel Phantomhive numerous letters. Ciel has Sebastian toss away the purely social invites, but he stops when he finds a letter from Queen Victoria.
Ciel decides to spend the social season at his manor in London where he discovers his aunt Angelina Dalles, her butler, Grell Sutcliff, and family friend, Lau, looting his house in search of tea. As Sebastian prepares some, they gather information on the murders performed by an unidentified serial killer, labeled Jack the Ripper by police and other prostitutes. After meeting with Undertaker, they determine that the removal of the murdered women's wombs had to have been performed by an expert, meaning an individual with anatomical knowledge.
Sebastian quickly makes a list of potential suspects and whittles it down to the Viscount of Druitt, Aleistor Chamber. They decide to attend a party Aleistor is holding in disguise with Ciel dressing up as Angelina's niece and Sebastian pretending to be his tutor. During the party, Sebastian creates a diversion by pretending to be a hired magician, allowing Ciel to investigate Aleistor. Shortly thereafter, Ciel is drugged and whisked off to a hidden room in the manor where Aleistor has begun to auction him off. Sebastian rescues Ciel and Aleistor is arrested. They both believe that the culprit of the murders is now safely behind bars.
However, another murder takes place, indicating that they have not yet found the real murderer. Sebastian and Ciel review the previous murders, and learn of the next likely victim. They lie in wait outside her home, sure that if the murderer comes, they would see him or her. However, the woman is killed anyway, and upon inspecting her home, they find Grell standing over her body. After Sebastian exchange words with Angelina and Grell, they eventually confess that they are Jack the Ripper.
Sebastian deals with Grell in his Grim Reaper form, whose modified death scythe is able to injure Sebastian. When Angelina moves in to attack Ciel, Sebastian momentarily returns to his demon form and moves to kill her. Ciel orders him to stop because Angelina had hesitated in her attack. Even though Sebastian stops, Grell kills Angelina when she refuses to kill Ciel. Ciel then orders Sebastian to eliminate Grell. Sebastian manages to overpower Grell, and he moves in to kill him with Grell's own death scythe. However, just as he is about to deliver the finishing blow, William T. Spears appears and stops him. Sebastian apologizes for his failure to kill Grell, but Ciel dismisses him.
Indian Butler Arc
After the murders stopped, London faces another problem: British citizens who have recently returned from India are the victims of an attack that leaves them stripped and hanging upside-down outside Indian pubs. All victims have the same letter attached to their bodies; it states that England, the land of the devil, will soon receive punishment from heaven.Ciel, Sebastian, and Lau begin their investigation and are attacked by some Indians in a poor district. Prince Soma and Agni help them out and reveal that they are in town to find Soma's servant, Mina.In return for their assistance, they come to stay at Ciel's manor, where Sebastian learns that Agni is on par with his fighting abilities despite being just human.
That night, Agni leaves the manor, and Lau, Ciel, Soma, and Sebastian follow him to Lord Harold West's home. They discover that Agni is working for West, and he has knowledge of Mina's whereabouts. Soma rushes in to confront Agni, but Agni only obeys West's orders and begins to attack Soma. Sebastian bursts in to save Soma, albeit in disguise.
Back at the manor, Soma starts throwing tantrums and destroys the Haviland tea set that Sebastian picked out for the young master. He then asks if Lau and Ciel are all right, and Ciel decides that it would be best if he teaches Soma some manners.  Sebastian points out that Soma didn't have anything in the first place because everything he claims to possess had only been given to him. As he continues to torment Soma with his words, Ciel enters the room and tells Soma that despite everything he has gone through, he plans to stand against everything to achieve his revenge. Ciel and Sebastian then leave the room to talk about West and his plans. Soma follows them and apologizes to the two (although he hides behind Ciel as he apologizes to Sebastian).
They continue their discussion about West's motives, and they speculate that West wants to win the upcoming curry competition in order to obtain a Royal Warrant. The attacks, then, were done to terrorize any competitors into backing out. Ciel decides he would like to obtain the warrant instead, and he orders Sebastian to make a competition-worthy curry. Soma acts as a taste tester while Sebastian works on replicating the quality of Agni's curry. After finally achieving it, Ciel says it's not enough to merely be on par with Agni; Sebastian needs to make him win.Lau points out that Sebastian seems to have a plan and Sebastian confirms it.
At the competition, it appears that Sebastian adds Funtom Co.'s chocolate which contains large amounts of pure cacao to achieve a deeper substance without ruining the taste and fragrance. Agni commends Sebastian's use of chocolate as an ingredient, but he insists that he cannot lose. On the other hand, Soma claims that Sebastian is ruining his curry by having the heat up too high and he is not able to make a perfect naan under the conditions provided. When it is time to present their curries, Agni immediately wins favor while the judges mock Sebastian's curry doughnut. However, once they taste it, they are evenly split over which curry is better and declare a tie due to the excellent combination of flavorings from the chocolate that Sebastian added.Queen Victoria and John Brown arrive, though, and stop the judges. The queen then declares that Sebastian is the winner due to his curry's appeal to people of all ages. Agni and Soma make up, and Agni apologizes to Sebastian for all the trouble he has given him. He tells Sebastian that he and the prince have learned a lot from them and expresses his utmost gratitude. Sebastian tells him to raise his head for there is nothing to thank him for. In the end, Agni tells him that he and the prince were able to make good friends, much to Sebastian's surprise. He tells Agni that it's the first time someone has said that to him.
Ciel Phantomhive and Sebastian are sent out by Queen Victoria to investigate the disappearances of children that seem to coincide with the presence of the Noah's Ark Circus. They attend a show, and Sebastian is invited onstage. However, Sebastian becomes too captivated with Betty the Tiger, who bites his head, causing Joker, Beast and the audience to panic . After the show, Joker approaches him and takes him to see Doctor to ascertain his condition. While there, he learns that many of the performers have prosthetic limbs, and he examines Beast's leg with interest. Beast, however, accuses him of being perverse and Dagger attacks him to defend his "sister's" honor. Due to his skill in evading the attacks, he impresses Joker and receives an invitation to join the circus. Sebastian agrees and brings Ciel to take the entrance test the following day; Ciel is able to pass with Sebastian's assistance. Joker then takes them on a tour of the tents and points out which ones are off-limits because they are exclusive to the first-string members. Afterwards, Sebastian tells Ciel that the children are not present and suggests they inspect the first-string members' tents that are protected by Snake's poisonous snakes. They work on assimilating with the rest of the members while waiting for an opportunity to investigate further. They are given stage names, with Sebastian's name being Black (ブラック, Burakku). While in the practice tent, they discover that the Grim Reaper, William T. Spears, is also present, under the name Suit. They agree to not interfere with each other; however, this is made more difficult by William's assignment as Sebastian's roommate.  William prevents Sebastian from investigating further while the circus members are sleeping because he has issues with Sebastian's nature of consuming souls.
During a performance, Sebastian and Ciel are able to infiltrate the first-string members' tents which became possible because Sebastian tied up all the snakes. However, when Wendy is injured, Sebastian is asked to stand in for her with Spears substituting for Peter. Ciel investigates further on his own, and he asks Sebastian to hurry back before the first-string members do in order to release the snakes. During the act, William makes things more difficult by refusing to touch Sebastian; Sebastian then grabs his death scythe so they can finish the performance. After the show, he is able to hurry back and release the poisonous snakes although he is fully aware that Ciel is still investigating.
Ciel reveals the information he was able to gather, and asks Sebastian to investigate further. However, Ciel is overcome by an asthma attack and collapses. Sebastian, therefore, is forced to speed things up.
When the first-string members learn that Ciel and Sebastian were searching in their tents, Joker leaves to consult Father. During this time, Sebastian takes advantage of Beast's distress by seducing her and eventually coaxing her to reveal Father's name. In the morning, Sebastian and Ciel leave for the latter's London townhouse, where Ciel attempts to prepare for further investigation. However due to Ciel's sickness, Agni convinces Sebastian that part of a butler's duty is to look after his master's health. Much to Ciel's dismay, Sebastian follows this advice and delays him from confronting Baron Kelvin until that night.
Upon reaching the manor, Ciel and Sebastian learn that Joker and Baron Kelvin were expecting them and had prepared dinner. Sebastian tests the wine for poison, but Ciel says he has no intention in eating. Baron Kelvin has Joker put on an impromptu circus act using the untrained, kidnapped children for the cast. After two children are killed by their acts, Ciel orders Sebastian to put a stop to it. Ciel then pulls out a gun and points it at Baron Kelvin, ordering him to lead them to the remaining kidnapped children's location. Ciel then learns that the Baron recreated the place where Ciel was used as a sacrifice. As a result, Ciel recalls his trauma and shoots Baron Kelvin. When Joker attempts to go to his father's aid, Sebastian cuts off his left hand and orders him to not disturb his master.
Doctor arrives and reveals that he used the kidnapped children to create the prosthetic limbs the cast members wear, and Sebastian comments on their exceptional quality. Doctor then grabs one of the kidnapped children and slices her open. This induces a complete breakdown in Ciel who recalls his own past, screaming and triggering an asthma attack. However, Sebastian is able to calm him down slightly by grasping his hand and reminding him he is "outside of the cage" now. He holds Ciel and takes off his eye patch, telling him to call his name. Ciel orders Sebastian to kill everyone and burn the place down. After killing the Doctor and Kelvin, Sebastian hesitates in burning the house down; he reminds Ciel that their mission from the Queen was not yet complete. Ciel responds by yelling at him and reminding him of his place. Sebastian then obeys the order and, using the seal, uses fire from candles to set the building ablaze. After setting the building on fire, Sebastian then carries Ciel out, where they encounter Doll who had gone looking for her adoptive brother. Doll becomes upset upon learning of Joker's death and attacks them. Sebastian is later seen walking away from the mansion, and it is implied that he killed her.
Afterwards, Sebastian boards a train with Ciel, and he is forced to join him in first class because third class was already full. There he questions Ciel's kindness in visiting the Renbourn Workhouse (where the first-string members grew up) and comments that it is at odds with his willingness to slay the children he was supposed to save. When Ciel states that it is because they would be better off dead, Sebastian calls him arrogant.
After the train ride, they get a short ride from a local to a hill that they climb to find the workhouse. There they discover that the workhouse is in ruins, and it must have been abandoned for quite some time. Sebastian comments that Baron Kelvin lied, and he likely allowed Doctor to carve up the brothers and sisters Joker referred to for more artificial limbs. Ciel finds it amusing that humans would fight to defend something that doesn't exist, darkly commenting that he himself is a human like them--- something to which Sebastian cheerfully agrees, as he states that humans are interesting.
Later, Ciel and Sebastian return to the manor, where Elizabeth exclaims that she wants to get new clothes and go on a boat ride. To satisfy her wants, Sebastian calls in Nina Hopkins, a tailor the Phantomhives have worked with previously. Sebastian initially criticizes her designs, saying that the colors red and yellow do not suit Ciel and would make him look too childish. As a result, Nina throws Ciel, Sebastian, and Elizabeth out of the room.
When Ciel returns for a fitting, she removes his top, unhappy with the silhouette. In order to prevent Elizabeth from seeing Ciel's slave mark, Sebastian places his hand over it according to Ciel's order, forcing Nina to suffer through awkwardly measuring Ciel. Thinking that it is now safe, Sebastian removes his hand only to have Soma and Agni burst into the room. Sebastian then rips down a curtain, covering Ciel long enough to dress him and cover the brand. He then leads them back to the dining hall, where Elizabeth learns that Ciel had recently been ill. She asks why Ciel never tells her anything, and Sebastian states that although it is a hard question to answer, Ciel seems more relaxed than he had been in a while, thanks to everyone's company.
When the day of the banquet arrives, he and the other servants make sure the event runs smoothly.  However, a commotion arises between the drunk Georg von Siemens and Irene Diaz who feels harassed from being relentlessly touched by him. This ends up with Ciel getting drenched with wine for defending Irene; to prevent a further disaster from happening, Sebastian grabs the wine bottle Grimsby Keane was about to throw and pours it into an exquisite wine glass pyramid. He successfully shifts everyone's attention with this act, leaving them in awe and developing a feeling of bliss. On the other hand, Ciel and Sebastian start talking in French about Georg's displeasing attitude caused by heavy alcohol consumption. This catches Arthur Conan Doyle's attention who chuckles, drawing the pair's attention to him. Ciel simply puts his finger on his lips, telling Arthur that he must keep this a secret.
Afterwards, they clean up in the kitchen when the guest of honor at the party, Georg von Siemens, suddenly requests their attention. Mey-Rin and Sebastian go to see what he wants, and they hear a loud scream, which attracts all of the guests from the party. When he does not unlock the door, Sebastian breaks it down and inside, they find Georg's corpse. Because the majority of house guests blame Ciel for the murder, they decide he must be watched by one of them. Arthur is chosen to watch Ciel, and they are handcuffed together. At this time, Sebastian makes arrangements with the other servants of the house, giving them various instructions for the following days. In the morning, Sebastian is found dead and does not wake up even when Ciel frantically orders him to.
He is moved to the basement along with Georg's body. While consuming breakfast, Charles Grey notices the seemingly extra plate served beside Irene and asks for it. Ciel insists that Sebastian would never mix up the numbers until they realize that Patrick is missing. Arthur and Ciel rise quickly and go straight to Ciel's room to check on Patrick. The room is locked and only Sebastian knows where its key is kept. Finnian volunteers to break in but is stopped by Grey who decides to destroy the door first since there are still desserts left to be eaten. There, they find Patrick's dead body with needle-like wounds on his neck, which is similar to a vampire's bite mark.
Later the residents search his body for the key but do not find it. Instead they find Sebastian's wet body, so they decide to move all three bodies to prevent further decay, but Ciel insists that they move the bodies later on.  When Jeremy Rathbone arrives, Sebastian's corpse, along with Patrick's and Georg's corpses, are moved into rooms according to the time they were murdered. After Jeremy examines the bodies and everyone leaves, a suspicious Charles Grey impulsively rushes back upstairs and peeks under the blanket of Sebastian's corpse. Staring at him, he kicks him in the face but finds nothing amiss. 
After the case is solved, Arthur Conan Doyle is thanked by Jeremy for taking care of the "young master" in French. Arthur suddenly realizes that something is odd about Jeremy and decides to rush back to the Phantomhive residence where he concludes that Jeremy is, in fact, Sebastian. Removing the disguise, it is revealed that Sebastian had been alive and well, posing as Jeremy since he arrived. He even went so far as to "borrow" Patrick's corpse and dress it like himself at one point so that it could be more convincingly apparent that Sebastian and Jeremy were two different people.
Sebastian explains to Arthur what really happened that night, and in the process, reveals that Charles Grey was the one who killed him and Georg. He also reveals to Arthur that he isn't human, frightening the latter. He even reveals his true form to him to make sure that he will eventually write about it.  After Arthur's departure, he states that Ciel liked Arthur's novel, to the extent that he reads the same magazine without throwing it away; therefore, he decided to reveal his true self to stimulate Arthur's imagination. Auspiciously, Arthur's next work will be something to look forward to.
Afterwards, Ciel asks Sebastian about Patrick's murderer. He asks if Ciel really wants to see the murderer and then proceeds to open a box where the murderer has been kept in, who turns out to be Snake. Sebastian explains how he encountered Snake and later asks how Snake found his way to the mansion. During the process, they discover that Snake got to the mansion because Soma gave him a carriage trip to the mansion, surprising the two of them. Ciel learns that Snake came to his mansion because of his friends' disappearance after Ciel and Sebastian joined the circus. Ciel then decides to take Snake in as a servant, surprising both Snake and Sebastian. At first Snake hesitates, but then accepts his offer.
Sebastian's corpse is buried soon after. Before everyone leaves, the bell on Sebastian's grave starts to ring. Undertaker tells them that if the bell is ringing, it means that he is still alive. Everyone hurriedly digs up his grave and when Sebastian gets up, he states that he was glad he could finally get out of the coffin. Elizabeth, Mey-Rin, Finnian, and Baldroy jump on top of him at the same time, crying in relief. Later on, Tanaka gives him back his lapel pin, and Sebastian formally serves under Ciel once again. Furthermore, he affirms to Elizabeth that he wishes to correct something she said earlier. When she wonders what she could have possibly said incorrectly, he confidently states that he does not tell lies.
Ship Voyage Arc
Sebastian introduces Snake to the servants as the manor's new footman.Baldroy asks Sebastian if he is really recruiting someone like Snake, even calling the new footman a "shady character". However, Sebastian states that it is the young master's decision, and he could not do anything about it. After Ciel has finished his breakfast, Lau arrives and is surprised that Sebastian is alive. Lau complains about missing his chance to sneak some of Ciel's food; as he talks about Karnstein Hospital--- an institution that is believed to have the ability to revive the dead, he tells Ciel that they come down to the back docks to shop for foreign slaves illegally quite often. Yet lately, the number is quite 'unusual'. As a result, Lau implies that they might be performing illegal human experiments. Ciel orders Sebastian to investigate it, and the latter returns in a doctor's costume. He informs Ciel that the hospital, together with upper class doctors opened an association called the Aurora Society. A nurse told him that they hold presentations of their results regularly and collect donations from nobles. In reality, it is a secret society that stands upon "The Complete Salvation of Mankind Through Medicine", as their motto. It has been confirmed that they conduct the illegal human experiments daily within the hospital. However, there were no signs of slaves in the hospital or anything pertaining to human experimentation and/or the revival of the dead. Ciel asks him where next meeting will take place. Sebastian reveals that it is scheduled to be held in the Blue Star Line's luxury ship Campania, which is the same boat Elizabeth had invited Ciel to. Together with his master and Snake, they confirm passage on the cruise.
Shortly after arriving, the three find the Midford family. Elizabeth asks Ciel to escort her to a dinner party-- an invitation which he accepts and is heavily influenced by Sebastian. He informs Ciel that the meeting for the Aurora Society will be held on the nineteenth; therefore, he suggests that the young master should take a rest.
Three days later, Sebastian accompanies Ciel, along with Snake, to the dinner party. Sebastian informs Ciel that the meeting is that evening. He reveals to Ciel the signal is an empty glass. Before spotting an empty glass being served, Snake overhears some guests whispering about his odd snake-like appearance. Ciel and Sebastian both comfort him, saying he is a "footman of a distinguished noble family." Upon spotting an empty glass, Sebastian quickly takes it, and he and Ciel head upstairs to the meeting.
Sebastian is seen disguising himself with very long hair pulled back with a black ribbon, leaving the right side of his bangs untied. To enter the meeting, Sebastian explains that each member must purchase purified water which costs thirty pounds at the front door to fill his or her empty glass. He also whispers the greeting used in the Aurora Society, causing Ciel to have an extremely shocked expression. After Ciel and another man exchange a verbal greeting, both Ciel and Sebastian pose imitating a type of bird pose, saying "The Phoenix" with completely straight faces. While Sebastian places his master's pin, Sebastian is interrupted by Undertaker's laughter. Shortly after, the Viscount of Druitt greets them. Sebastian reminds Ciel that the Viscount has a medical license.
Rian Stoker, the founder of the Aurora Society, begins a presentation about the society's goals of perfect health. He has a dead body presented in a coffin, which is confirmed dead by Sebastian's distaste of the smell. The corpse is brought "back to life" by some form of electrical shocks. However, the corpse begins attacking the spectators. Sebastian attempts to slay it by flinging silver dinner knives at the corpse, inflicting what should be fatal wounds. However, after failing to stop it, Sebastian states the moving corpse is "a being he does not understand".  Then a young Grim Reaper, Ronald Knox, appears and uses his Death Scythe (a lawnmower) to kill the corpse, stating that one must smash the head in to stop it. A quick exchange of words between Ronald and Sebastian takes place, where Ronald reveals he's investigating reports of corpses that move on their own after their souls have been collected. After Ciel departs to follow Rian Stoker, a fight ensues, and then the two eventually part when Ronald realizes he'll have to work overtime if he doesn't get moving.
Sebastian then appears in the cargo where Ciel, Elizabeth Midford, and Snake are trapped by the moving corpses. He kills several, then is given orders to "clean them up" from Ciel, and so he begins killing the giant crowd of corpses by bashing their heads in. Ciel describes the scene as "Splattering crimson. A demon dancing." as he has flashbacks to the first time he had seen Sebastian kill. When Sebastian finishes, Ciel notes his gloves are dirty with blood, so Sebastian changes them before helping the three down from their hiding place. Sebastian then captures Rian Stoker, who had been sneaking around, and it is revealed that there are ten times as many moving corpses in another part of the ship that probably have escaped their coffins. Ciel then orders Sebastian to find Lizzy's family and take them to a safe place. Sebastian quickly leaves to do as ordered.
Once he finds the Midfords, Sebastian helps them in their fight against the corpses. He then explains he came to take them to a safe place, but he is told that they will stay to protect their fellow Englishmen. He tells them to stay safe; he then heads back to Ciel, Lizzy, and Snake as was ordered of him. When Sebastian finally finds Ciel and Lizzy, they are falling out of the ducts and had been separated from Snake. He helps Lizzy down, as he has caught Ciel who had already fallen, and tehy make haste to find the contraption that would stop the corpses.Grell Sutcliff and Ronald Knox fall through a hole cut in the ceiling; Grell freaks out that he didn't have time to do his make-up because he wasn't told Sebastian was on the ship. During the fight where Grell flirts with Sebastian, much to the latter's dismay, Grell accidentally cuts a hole in one of the walls, releasing a surge of flooding water into the room. The water throws Ciel and Lizzy out into the hallway where Ciel's leg becomes injured as the fight within the room continues while Lizzy has been surrounded a group of corpses. Sebastian, being restrained by Ronald's blows, is unable to rescue both Ciel and Elizabeth at that moment. Much to his and Ciel's surprise, Lizzy starts to attack the corpses, revealing her sword fighting prowess. She then proceeds to attack Grell, but Sebastian stops her. He apologizes for failing as a butler, for Lizzy was forced to perform such actions. He states that he will take over the fighting from that point on, but both groups realize that time is running out. Ciel points out that they must find Rian while Grell asks if "putting the screws" to Rian will fix the problem. Ronald simply shows Grell a page from his soul reaping list and agrees, leaving the three.Snake rejoins the group, and they leave to head to the life boats while Sebastian carries the injured Ciel.
When they reach the lifeboats, Sebastian is forced to knock Lizzy out. Ciel gives up his seat for Snake, and the two then leave to find Rian, and stop the corpses. On the way Ciel and Sebastian run into Viscount Aleistor Chamber, who has the disarming device. Helping to carry the device is a very entertained Undertaker. They head to a main hall, and there Rian and the Shinigami rejoin the group. They then listen to the Viscount's plan to be the leader of a new world, and all present perform the "Phoenix Pose" for him, although almost everyone agrees to kill him. However, when the Viscount attempts to stop the corpses using the machine, it does not work. Grell then, in anger and frustration, attempts to kill the Viscount. However he is stopped by Undertaker, who reveals himself to be a Grim Reaper, or as Grell says a "Deserter" (in the anime he retired). Undertaker then explains how his curiosity led him to create the moving corpses, which he calls Bizarre Dolls, by adding to the cinematic record so the body would believe it has not died, even though the soul has been removed. Grell attacks two dolls and finds after the "End" of their cinematic records a continuation with Undertaker dressed as Charlie Chaplin. He then explains about the dolls, since they lack souls, they are trying to take them in order to make themselves complete. Therefore, they attack the living; however, they can't make another soul theirs. He also explains the dolls were placed on the ship in equal amount to the living to see how much of each creature would survive.
From this point a fight ensues between Undertaker, Grell, Ronald, and Sebastian. Both Grell and Ronald, and Sebastian want to capture Undertaker for their own reasons; this results in an intense battle where both sides fail to capture Undertaker. Grell and Ronald use a full on frontal attack, which still fails because Undertaker reveals he still has his own death scythe (which is the more classic grim reaper style). Undertaker then attacks the pillars holding up Ciel; however, Sebastian rescues him, but then Undertaker captures Ciel. As a result, Sebastian attacks Undertaker, falling for a trap. Ciel is thrown off the upper level balcony, and as Sebastian attempts to rescue him, he is run through with Undertaker's scythe.From here Sebastian's cinematic record is seen--- his memories after killing Ciel's captors, bringing Ciel home, and both training Ciel to be a proper gentleman and earl while simultaneously being taught to be a proper butler, all come into view. Sebastian then snaps out of these memories since he was reminded of how greatly he desires Ciel's soul, and he rescues Ciel despite his injuries. Undertaker goes to kill him, stating it is better because he is really making Ciel miserable. Just then the boat tilts sharply upwards which led to Rian's fall and his eventual death.
Ronald makes a comment about Sebastian acting tough despite being seriously weakened by the blow delivered by Undertaker. Sebastian proves him wrong by beating the young Reaper and throwing him in the way of Grell, who had begun to attack Undertaker again. Sebastian then smugly remarks that youngsters (like Ronald) are feeble and rely too much on their death scythes, which Sebastian has taken possession of. Just then the boat begins to sink, and Grell attacks Undertaker's legs while Sebastian (who is holding Ciel) attacks the head. He dodges both, but the chain of lockets hanging from his waist, are cut off, and caught by Ciel, much to Undertakers dismay. He then smiles and asks Ciel to take care of the chain because it is his treasure. Undertaker then slices the ship in two with his death scythe.
Sebastian has a difficult time ensuring Ciel's safety while carrying him, so he promptly puts a life ring around Ciel, and then throws him overboard into the icy ocean. Ciel nearly drowns, but he is saved when Sebastian pulls him out of the water and into an unoccupied lifeboat taken from the sinking ship, and he then proceeds to kick them to safety. While kicking, a Bizarre Doll emerges from the water and bites Sebastian's leg, accompanied by countless others. Ciel tells Sebastian to get in the lifeboat with him, but the dolls begin to destroy the boat in an effort to get to Ciel. Sebastian attempts to fight them off with an oar, but there seem to be too many. He is then ordered to eradicate them, and proceeds to do so using the oar but making quite a mess. Finally, Sebastian succeeds but immediately winces in pain. The Undertaker's Death Scythe blow has significantly weakened him and he begins to cough up blood. Sebastian apologizes to Ciel for his unseemly state, but instead, Ciel congratulates him on a job well done and advises him to rest once back at the manor.
After Ciel returns and gets well, Elizabeth organizes an Easter Egg Hunt for him. Many of Ciel’s “friends” (Nina Hopkins, Agni, Soma, Edward Midford, and the Queen’s two Charles) along with the servants participate in the event. Sebastian decides to make things interesting by turning it into a game. Partnered with Ciel, he easily handles everything to secure Ciel’s victory. As a result, Ciel succeeds in getting the prize and presenting it to Elizabeth. 
Public School Arc
Queen Victoria informs Ciel that students at Weston College have been refusing to return home and asks him to investigate, including her cousin Derrick Arden. Ciel decides it would be best to infiltrate the school himself. He orders Sebastian to figure out his own way into the school.
Ciel enrolls after he and Sebastian open a spot by doing something to a student and making him unable to attend. On his first day, some of his dorm mates "welcome" him by throwing him on a sheet and launching him into the air. Before they can do it twice, Sebastian, in disguise, appears and stops them. He then 'introduces' himself to Ciel as the dorm supervisor, Michaelis. Later on, after Sebastian is summoned by Ciel, he confirms with Ciel that Derrick was transferred to the Purple House. Ciel then gives him the task of cleaning up the dining hall while Ciel goes to investigate at the dormitory.
Despite already being as the dorm supervisor, Ciel's work for Clayton is handed over to Sebastian, much to his dismay. At night, Ciel notifies Sebastian about his invitation to the Swan Gazebo and orders him to make teacakes in hopes of impressing the P4. However, the next day, Ciel complains to him about how Maurice Cole had lied about the time of the meeting, causing him to arrive 2 hours late. Sebastian states that Maurice Cole behaved in this manner out of jealousy. They discuss further, speculating that Maurice has been using inappropriate methods for his own benefit. Ciel then orders Sebastian to talk to other people who had been deceived by Maurice in the past and thoroughly investigate Maurice's activity patterns. Throughout the course of the day, he follows Maurice around, witnessing him asking other students to perform fag tasks for him. Later that day, he meets Joanne Harcourt in the library. In the chapel, Harcourt sobbingly tells Sebastian about how Maurice deceived him before. Sebastian comforts him, and he then reports his findings to Ciel in the evening.
One day after the arrival of Prince Soma at the school, he and Ciel use Soma to discover more secrets regarding Maurice. . After planning a strategy with his master, Sebastian collects the tiny pieces of the flower cards which Maurice used to communicate with his entourage.
The next day, in the 3rd art room, Ciel confronts Cole. Outside the window, bat-like, Sebastian silently watches the entire scene. Although boredom is starting to set in, he continues to help Ciel.  Afterwards, Clayton makes Ciel his fag.  Later on, he complains to Sebastian that he feels like an “opera singer”. He has now concluded that Gregory Violet will have the most information about Derrick Arden; he just has to figure out a way to get close to him. 
While Ciel tries to uncover more information through the P4 and their fags, Sebastian investigates things from his end. He questions Vice Principal Johan Agares about the students. Agares tells him that the principal handled them. When the VP suddenly trips, Sebastian helps him up. When he touches his arm, Sebastian immediately realizes something is wrong. 
In Latin class, Sebastian leaves a note for Ciel to meet him later. Ciel goes to the Sapphire Owl Dormitory’s library at night to meet Sebastian. Sebastian suddenly grabs Ciel and clamps his hand over his mouth, startling him. Lawrence Bluewer suddenly comes in, and Professor Michaelis kindly asks him if he can help him with something. Bluewer declines assistance and leaves. Sebastian then helps Ciel out of his robes—he apologizes for being rough, but he knew Ciel was being followed. After comparing notes, Ciel decides that they’ll take action tonight. Sebastian admonishes him that he’ll get “2 Y’s” for walking around at night. Ciel replies that he has nothing to fear as long as he’s with a “teacher”. At Violet Wolf Dormitory, Ciel starts a fire by hurling a lighted torch through a window. He reminds Sebastian of Rule #87—now all they have to do is wait for Derrick Arden and the other boys to come out. 
When the fire starts spreading, Sebastian suddenly grabs Ciel, and they both continue to observe from atop a tree.  As the students start pouring out, Ciel tells Sebastian to keep an eye out for Derrick and the other boys. However, Sebastian uses his demonic powers and concludes that there are no souls left in the building.  Ciel sighs and then tells Sebastian to help put out the fire. Professor Michaelis shocks all the students by bringing Soma’s elephant to help put out the fire.  Students from other dormitories also come to help. Gregory Violet suddenly scream—no one should go into Violet House. Soma shouts back that Gregory cannot protect with his “worthless pride”. Gregory then concedes and allows everyone to help. Separately, Ciel and Sebastian observe the whole scene. 
Sebastian meets up with Ciel later when he comes to thank him for his glowing recommendation to join Sapphire Owl’s cricket team. Ciel runs happily to Professor Michaelis and thanks him for his support. Professor Michaelis replies that he’ll be happy to help him with the details. Both of them think along the same lines—they know there is no clear standard for the special player’s selection. However, Ciel believes if he can make points, bring victory to his dorm, and make everyone shed tears, it will assure him the final prize.
On June 3rd, the night before the big game, all the dorms hold a grand party, each once arriving in the main hall with great fanfare. Sebastian quietly laughs when Ciel enters with his team “God Only Knows”, and they receive an awkward reaction form the guests.  Once the P4 light the torches, Sebastian and Ciel watch as VP Agares declares 1889’s Inter-Dormitory Cricket Tournament open.
When the party commences, although Sebastian does his best to remain unnoticed, Frances Midford recognizes him. After their slight banter, she realizes that they are both here on the Queen’s business. Edward comments that he didn’t recognize Sebastian at all, stunning Ciel. Sebastian asks them all to keep their secrets.  Elizabeth’s father then announces that he hopes to see another “Blue Miracle”. After he narrates the entire story, Ciel can’t believe that his predecessor was in the Blue House. Alexis Leon Midford tells Ciel he possesses the blood of genius game maker—it’s sure to be an exciting match.  Ciel watches as Sebastian “handles” the drawing for the “fair and impartial” dorm matchups for the game.  The game between Scarlet Fox and Sapphire Owl begins.
As the game progresses, Sebastian notices the servants’ lively behavior with Elizabeth and wonders what they are up to.  Furthermore, Sebastian also observes that Edgar Redmond is quite a talented cricket player.  On the other hand, Sebastian can’t believe that Lau entered the school’s grounds and is offering gambling services to everyone—he smiles, thinking Lau hasn’t changed at all. 
When the score is Blue 21-Red 80, they take a break. Ciel plans to discuss their team’s strategy, but their “coach” has “disappeared”. Although the other players are worried, Ciel tells them to leave it to him.  At the end of the meeting, Professor Michaelis returns and apologizes—he was in the bathroom.
Sebastian watches as Ciel faces Harcourt. Harcourt, a spin bowler, tries his best to defeat Ciel, but Ciel resolutely defends the wicket. Moreover, batting is not their only counterattack—members of Team Red are suddenly overcome by acute gastricular discomfort. (Sebastian worked as a waiter during the break and fed Team Red laxative-filled meat pies). Team Red forfeits the match, and Team Blue is declared the victor.
Later, Sebastian, as Professor Michaelis, meets with Tanaka and hands him the family’s lunch. Tanaka lightly jokes that he hopes the “food” is “safe”. Sebastian assures him it is. As Tanaka leaves, he tells Sebastian he’s looking forward to another “Blue Miracle”. Sebastian bows and agrees that it will be done. 
After Gregory Violet’s team’s defeat, Team Blue faces Team Green. Ciel says they should win for Red House as well.  Professor Michaelis, as their coach, decides to cheer them on as well.  When the game begins, Professor Michaelis asks the music students (who are acting as Team Blue’s cheerleaders) to play the “Radetzky March”.  Through Professor Michaelis’s carefully timed cues, Team Blue succeeds. However, Edward Midford figures out the trick and comes out to bowl. When he bowls out the player using Violet House’s “Purple Burnout”, Ciel is shocked. Sebastian concludes that Edward is exceptional in his own way.  Suddenly, Sebastian sees the principal sitting in the stands. He hands over the reins to McMillan and rushes toward him. Ciel realizes what Sebastian is doing—if they can catch the principal, the case will be solved once and for all. 
Sebastian chases after the principal. However, he manages to elude Sebastian while he’s using his demonic powers, shocking him. Unable to pursue him any further, Sebastian heads back to the grounds. He arrives just in time as Professor Michaelis. Catching Ciel, he states their first priority is medical attention. Ciel joyfully replies that he’s so happy, he can forget about the pain. Amidst the cheering students, Sebastian holds Ciel, softly saying he’s really a bad child. 
In the medical office, Ciel loudly complains as Sebastian dresses his wound—painful things are painful no matter what. Sebastian smiles and says that everything went according to plan, but Ciel received a much nicer “medal”. Plus, he also recovered the rigged ball that Lawrence used it the final play. Holding it, Ciel remarks he can’t understand why Lawrence would throw a ball when he knew would lose. Sebastian replies that that is just the way humans are. Sebastian then apologizes—the principal got away from him. Shocked, Ciel orders Sebastian to make him something sweet to eat. Sebastian shows him the dessert he has already prepared—unfortunately, he smiles, Ciel will have to eat it later. Suddenly, Blue House’s members pour in and congratulate Ciel. McMillan tells Ciel to get ready at once for the victory boat parade. 
Sebastian gives Ciel a new, slim fitting outfit for the parade. He tells Ciel he made it because Ciel said that he would win. During the boat parade, Ciel looks at the smiling Queen and thinks he’ll definitely present the truth to her. However, when they are about to salute, Lawrence tells him a startling truth—they never thought they would win, so they never practiced the boat ride. The boat tips over and all the Blue House boys topple into the river. All the spectators, including Professor Michaelis, laugh good-naturedly. 
During the party, Ciel is surrounded by his carefree and playful friends (Elizabeth, Soma, and McMillan. Sebastian also observes all the guests as they mingle. When Ciel returns to his room, an invitation for the Midnight Tea Party is on his bed. He realizes ecstatically that this is his chance to meet the principal. After informing Sebastian of the details, he heads to the given location alone.
When Derrick, however, turns out to be a Bizarre Doll, Ciel immediately summons Sebastian  and orders him to capture Derrick. Amidst everyone’s shocks and screams, Sebastian whisks the tablecloth off the table and uses it to subdue Derrick. Sebastian then proceeds to help Edward with Herman’s arm. 
Ciel tells the astonished group that he came to this school at someone’s request to investigate the missing boys—Professor Michaelis is actually his butler Sebastian. Ciel announces that this proves that the boys are already dead and whips out his gun. He points it at the principal and asks him to tell the truth.  When everyone is about to protest about Ciel’s sudden change in behavior, Edward unexpectedly speaks up—they all shouldn’t interfere with Earl Phantomhive.  Furthermore, the other fags are dumbfounded as the P4 confess to their crime-killing Derrick Arden. Sebastian, however, concludes that everything was fairly straightforward until the principal shrouded everything in mystery. Although the P4 protest that the principal had nothing to do with it, the principal suddenly speaks. It was so entertaining to watch their struggles, and they provided him with the finest of laughs. Sebastian tells the principal to drop the act—Sebastian then draws his arm in front of Ciel as Undertaker reveals himself. 
Ciel is shocked to see Undertaker. Undertaker laughingly asks Ciel if he’s enjoying his first time in group life. Sebastian states he was wondering where he went after the Campania incident and he closed his shop. He adds that he can’t believe that Undertaker took a job at a school.  Sebastian then turns to the P4; he asks them what was so important that they would resort to murder. After the P4’s tell their complete story, Lawrence turns to a speechless Ciel, asserting that he knows Ciel can understand what they did was right. Undertaker bursts out laughing; Sebastian smiles and says it’s rare for them to agree on something.  Ciel thinks to himself that the difference between education and brainwashing is paper thin.  Aloud, he tells the P4 that he will explain the circumstances to the concerned parties; Sebastian smiles when he hears this.
Ciel then directs his attention to Undertaker, questioning him about his motives. Undertaker replies that he will tell him since he has been paid his fee. He states that he has discovered that even the dead can evolve. They have their dreams of the future; this compels them to move forward. Ciel demands to know what he plans to achieve by bringing the dead back to life. Undertaker answers that he wants to know what comes after the predetermined end. As Ciel starts, Sebastian holds onto his arm. Undertaker adds that there might be interesting developments lurking behind the “end credits”. Sebastian then interrupts that this where they disagree—because death is such a hopeless and definite end, that is why it is beautiful. After hearing Sebastian’s response, Undertaker is silent. Undertaker then announces that he will be taking his leave now; Ciel declares that he won’t let him get away again.  He orders Sebastian to capture him, but Vice Principal Agares comes to Undertaker’s defense. Sebastian comments that he knew it—Agares is also a Bizarre Doll. Undertaker proclaims that Agares was his masterpiece. Derrick’s friends suddenly surround the other boys; Ciel yells at everyone to get out of the garden. 
Meanwhile, Sebastian states at Undertaker, asking him if he thinks this Doll is enough to hold him—Undertaker is really underestimating him. Undertaker replies that he’s not underestimating him—they just have completely different goals. Jolted, Sebastian sees an incredibly realistic simulation of their fight in his mind—Undertaker would easily capture Ciel and use him against him. Alarmed, Sebastian realizes that there is only one course of action—he breaks free from Agares and rushes to Ciel. At the same time, Undertaker escapes, stating he knew that Sebastian would do that—he should continue to loyally protect Ciel forever. 
Ciel immediately yells at Sebastian, telling him he ordered him not to let Undertaker get away. Sebastian replies that as per the contract, protecting Ciel’s life is his top priority.  As he smashes one of the doll’s skulls, he adds that he cultivated it, so he won’t be robbed of it. Simultaneously, Ciel notices a wobbly Harcourt behind him—Sebastian explains that he had to knock him out so he could fight easily. 
After Sebastian has defeated all the Bizarre Dolls, Edward suddenly burst back into the garden. He tells Ciel that everyone else has been evacuated. Ciel cautions him to watch his step—they are all done here as well.  Edward then tells Ciel how scared he is—in a year, he may have become like the P4, believing that there is justice in murder. Ciel smiles and states that as long as Edward thinks like that, he is still normal, adding “unlike himself” under his breath.
After Ciel’s meeting with the Queen, Ciel and Sebastian head home. Sebastian states that Ciel worked hard. Ciel answers that he wants to go home and eat sweets. Sebastian then offers him McMillan’s letter. Ciel responds that he won’t be returning to “that cramped miniature garden ever again”. 
At the mansion, Sebastian and Ciel find the servants occupied with some loose sheep. Ciel unexpectedly laughs—he tells Sebastian to handle the situation and then make some tea. Sebastian heads to the kitchen to prepare a fabulous dessert; simultaneously, he simply burns McMillan’s letter in the oven.
Life returns to normal at the Phantomhive manor. One morning as Sebastian is assisting Ciel, Soma bursts into his bedroom, demanding to know why he has left school. Ciel replies that he’s welcome to stay, but Soma responds that he learned everything they are teaching when he was a young child. Sebastian and Ciel are left speechless after hearing this. Agni also comes in, and Sebastian casually comments that he just saw him last at Weston College, secretly protecting Soma. Infuriated that Agni went against his orders, Soma loudly complains to an upset Agni. Ciel and Sebastian use this opportunity to leave. Ciel tells them they will be leaving the mansion in their capable hands. 
Ciel and Sebastian then take the four servants to London. Ciel travels from store to store getting the things they want and need. At Daunt Book Store, Ciel buys a historical novel by Arthur, surprising Sebastian. Ciel adds that it would be a good way to kill time.  Afterwards Sebastian takes the group to the Somerset House—he wanted to take a closer look at Undertaker’s mourning chain.  Several names come up, but none of them have anything in common. Ciel suddenly recognizes one of the names as his grandmother’s. Astounded, they both wonder what kind of ties Undertaker has to the Phantomhives. Finally, at Harrod’s Stores they all see Funtom’s new line of ladies products. Sebastian tells Ciel that it’s good that he chose to expand in this area, but he needs more knowledge than just data and statistics. Annoyed Ciel tells him to be quiet. 
Suddenly a scream shatters the air, and Sebastian takes off leaving Baldroy in charge. Sebastian rescues Irene Diaz and safely delivers her to her destination. In exchange for his assistance and discretion, he enlists her aid to be a spokesperson for the new Funtom line of ladies’ products. Meanwhile, while Ciel is furiously waiting for Sebastian’s return, people suddenly rush to buy Funtom’s ladies’ products. When Sebastian returns, he explains everything to an irritated Ciel. Unexpectedly, Ciel realizes the value in using a celebrity to pitch products—therefore, he decides to use Irene’s face on all their ad campaigns. As he explains everything to Sebastian in his study later, Sebastian claps lightly, stating Ciel’s greed knows no bounds. 
Emerald Witch Arc
A week ago, Ciel received a letter from the Queen; she asked him to investigate a series of mysterious deaths in Germany. Ciel complained that he did not even speak German; it wasn’t also his duty to investigate underground activities outside of England. Sebastian suggested that he should just ask the Queen why she’s sending him, but he replied that she would just evade the question. 
Ciel first questioned his uncle  who Sebastian quickly and efficiently brought from a sauna in Finland. Since Ciel was unable to get any useful information from him, he decided to head to Germany himself. He added that he would also pay “him” a visit since he’s going to Germany anyway.  He ordered Sebastian to prepare the tickets.
Presently, Ciel and Sebastian travel to Germany by train. Although Sebastian tutored him, Ciel is unable to understand the “East Franconian dialect of Southern Germany”.  Annoyed, he tells Sebastian all of his studying was a waste of time. Sebastian covers his laughing mouth, saying Ciel had to start with the basics.
Ciel orders Sebastian to ask the man about the curse. The information Sebastian gets is inconclusive; therefore, Ciel decides to head to the werewolf forest because it would be meaningless to talk to a crazy person. Sebastian states the man does not want to take them; Ciel slyly replies that they should just buy the carriage then. 
Sebastian instructs the servants to load the luggage in the second carriage. Then they all proceed into the werewolf forest. Sebastian and Ciel are together in one carriage. Noticing that his compass is spinning wildly, Ciel comments that there must be mineral resources nearby. Sebastian mockingly responds that it could be the curse. Although Ciel dismisses the notion, Sebastian states that his response is strange—Ciel is a boy who has met Shinigami and Demons, yet he denies the existence of curses and werewolves. Moreover, the seal on his eye is also a type of curse. Sebastian explains that demons only appear when humans give up their souls for their wish.  When Ciel asks if Sebastian ever appeared at any Satanic rituals, Sebastian responds that those were just lecherous meetings of vile humans.
The group suddenly sees a village in the forest, and everyone disembarks from the carriages.  They are all then unexpectedly surrounded by angry villages who are waving their pitchforks at the group. Ciel instructs Sebastian that they want to speak to the Lord of the village (who the villagers have mentioned). Suddenly, Sieglinde Sullivan, a young girl in a strong man’s arms, appears. She introduces herself as the Lord of this forest. She explains that their village, Wolfsschlucht, doesn’t allow visitors.  However, Sullivan tells her butler Wolfram to ask them to come to the Green Manor. On the way, Sullivan (speaking in German) asks Ciel’s age. Ciel feels she’s saying something rude (she called him “Shorty” in German); Sebastian tells her that Ciel is 13 years old.
When they arrive at the manor, Sullivan tells Wolfram to show the servants to their quarters.  Sebastian leaves Ciel with Sullivan in the dining room and proceeds to the kitchen.  In the kitchen, Sebastian offers to prepare Mauetaschen  He also instructs the servants to rest after their long journey. When Sebastian finally returns to Ciel’s side, he has prepared the meal; however, they are interrupted with news about a werewolf attack.  Ciel is shocked, whereas Sebastian is skeptical.
Ciel and Sebastian both ask Sullivan if they may accompany her so they can learn about the forest’s dangers.  They are unable to deduce anything from the old woman’s ravings. Later on, when Ciel is with Sebastian in his room, he instructs him to prepare some strong tea since it’s going to be a long night.  Suddenly Ciel spits out his tea, and Sebastian discovers Sullivan eavesdropping outside their door.  After countless misunderstandings,  Sullivan tells them about her ancestor the Green Witch. Furthermore, she wants them to tell her all about the outside world since she has never left this place.  Ciel starts by showing her some toys; after some time playing, she falls asleep. Sebastian congratulates an exhausted Ciel for working so hard and communicating with the simple words he knew  Suddenly, Wolfram comes in; he apologizes for Sullivan’s behavior and carries her out. He instructs Sebastian to leave as soon as dawn breaks. 
Consequently, Ciel and Sebastian secretly head into the forest to investigate.  Sebastian thinks that he can’t sense anything or feel any presence. Suddenly, tears start falling from Ciel’s eyes. He is unable to stop it; his skin also starts changing color. Unexpectedly, the werewolf appears and runs off. Unconcerned about his condition, Ciel wants to follow it immediately, but Sebastian stops him. He states that there is something wrong in this forest, and he must take Ciel back. Once he deposits Ciel back in his room, Sebastian heads out once more. Suddenly, he starts crying too. He is shocked because as a demon he doesn’t feel the emotions that cause tears. The teardrops in his palm suddenly turn to blood; Sebastian fearfully realizes that he’s bleeding from his nose as well. 
He recalls the conversation with the old man—the people who see the werewolf will be cursed. Sebastian watches horrified as his skin also changes color and starts swelling. Alarmed, he rushes back to Ciel, but it’s too late—Ciel is even worse off than he is. 
Holding Ciel in his arms, Sebastian rushes to Sullivan’s room, calling her to come out quickly. When she opens the door, he begs her to save Ciel.  Realizing they went into the forest, she orders Wolfram to prepare the ceremony. During the ritual, (which takes place in an underground chamber), Sebastian insists that he’s fine, but Ciel is not responding normally.
Nevertheless, after the ritual is complete, Sebastian carries Ciel back to his room. When Ciel regains consciousness, Sebastian reaches his hand out to Ciel when Ciel unexpectedly knocks it away.  Ciel then grabs hold of Finnian, surprising everyone. He says “Ciel doesn’t want pain anymore”; this confuses everyone even more. When Sebastian tries again, Tanaka stops him. Ciel suddenly starts screaming about the lights being too dim. Everyone feels that his eyesight may have been affected by the attack as well.
After they’ve left the room, Mey-Rin starts crying about his condition. Baldroy tells her to stop, saying it’s bad luck. Tanaka asks Sebastian what they should do. Sebastian sorrowfully states he does not know since he cannot go near Ciel. Nevertheless, he excuses himself in order to do something. 
Returning to the forest, Sebastian contemplates that it’s impossible for him to be affected by evil miasma.  When he returns to discuss the situation with Sullivan, she explains that Ciel has been affected by the evil miasma of the werewolves. This power weakens the heart and increases fear.  Sebastian wonders if this is the reason Ciel is refusing to accept adults. Sullivan responds that it is possible that’s why he’s only accepting the gardener. Wolfram suddenly grabs Sebastian and yells at him for entering the forest. Sullivan immediately orders him to release Sebastian.  Once he does, Sebastian bows to Sullivan and begs her to save Ciel.  She agrees, but in exchange, she wants Sebastian to be her butler until Ciel is healed. 
Sebastian starts taking care of Sullivan. Watching his excellent form, Sullivan tells Wolfram to learn from him as well.  In the morning, Sebastian greets all of the servants.  He puts Baldroy in charge of lunch; Snake will polish the silverware, and Mey-Rin is in charge of the linen. Tanaka can stay as he is (he is once again in his small form). Lastly, Sebastian sighs and tells Finnian to take care of Ciel. Finnian is about to happily agree; yet, he shrieks when he understands what Sebastian has asked him to do. Sebastian tells him to feed Ciel some food; if he doesn’t have any appetite, he can give him some warm milk with honey. 
Sebastian continues to take care of and educate Sullivan throughout the day. Watching Wolfram’s behavior, he tells him it’s not a butler’s duty to be overly affectionate and spoil their master. 
Later on, Sebastian brings Sullivan to see Ciel.  Finnian happily points out that she is speaking English now. Sebastian quietly tells him to clear the dishes and leave. Sullivan proceeds to change Ciel’s bandages.  Afterwards, when Sebastian is carrying her back, she asks him if he and Ciel are both devil worshippers. Although Sebastian tries to explain Ciel’s traumatic past and the circumstances of their meeting, she misunderstands.  Not realizing he’s really a demon, she tells Sebastian that she’ll keep their “secret” from the rest of the household.
Sullivan then addresses the rest of the Phantomhive household. She tells them that Ciel’s eyes are fine; the condition was mostly psychological.  All of them are extremely relieved. Baldroy immediately suggest that they head back to the manor so Ciel can get some real rest. Mey-Rin states she knows he just wants to cook him some meat. Finnian wants to make snacks, and Snake wants to make scones-all for Ciel. Sebastian sighs and asks them not to increase the workload.
Next, Sebastian asks Snake to help him with something.  They go into the underground section; however, instead of heading towards the cellar, Sebastian goes in the opposite direction. There he finds a secret door, surprising Snake. They both wonder where it leads to, but before they can investigate further, Wolfram discovers them. Sebastian easily smoothes over the situation, and he leaves with Snake. Wolfram again orders them to leave.
Meanwhile, Finnian is taking care of Ciel when a werewolf attacks them.  He protects Ciel, and he kicks the werewolf out of the window. The servants burst in, and Finnian tells them what happened. Baldroy wants to go after him, but Sebastian stops him.  Sullivan says something about a ritual and leaves with Wolfram.
A few minutes later, the servants beg Ciel to come out of bed—everything is all right now. However, Ciel screams that he just wants to go home. As Sebastian is bandaging Finnian’s back’s wounds, he is conflicted over Ciel’s contradictory orders (before, Ciel confidently said they are not leaving until they solve the case—now he’s yelling he wants to go home). Sebastian wonders what he should do now. 
Sebastian, Snake, Baldroy, Mey-Rin, and Tanaka discuss how they can help Ciel.  Sebastian suggests shocking him some more, but Tanaka is against this. Tanaka states it would be best to watch over Ciel until he gets better. Baldroy adds that this is the reason that he doesn’t like the occult.  Sebastian agrees to not try anything strange-just to sit and wait. 
Later on, Snake rushes to tell Sebastian a “big scoop”;  Oscar came back from the underground area. Sebastian asks him what Oscar discovered. Snake tells him along with the rest of the household that there are werewolves in the castle’s basement as well as something else. Baldroy questions Snake about what this “something else”, but he is unable to explain further. They believe Sullivan is in league with the werewolves; however, Mey-Rin states her concern and worry for Ciel was not false.  Snake adds that there is a magical charm on the door that forbids intruders’ entry.  Mey-Rin asks Sebastian how he will proceed. He tells them he’s going underground to see for himself. If Wolfram returns, he instructs them to distract him until he returns.  In the underground chamber, Sebastian discovers strange magical markings and drawings. As he tries to decipher them, he suddenly reaches a startling conclusion.
Sebastian returns to the others just in time to save the German maid from one of Snake’s snakes. As she screams, Sebastian effortlessly grabs it and returns it to Snake, surprising the Germans. After the excitement dies down and the main household is once again alone, Snake states that Oscar has another “scoop” to report—the maid smells just like one of the werewolves.
Suddenly Snake and Sebastian hear a noise and rush outside. The Queen’s footman John Brown has brought a letter for them. Although they are surprised to see him,  Sebastian accepts the letter on Ciel’s behalf. He informs John that the Earl is not well.  John, nevertheless, says he needs an immediate answer; therefore, he allows Sebastian to read the letter’s contents. After Sebastian reads it, he is shocked, but he sends John off with a response at once.  Sebastian tells Snake they now have to “pick up the pace”. 
Sebastian heads to Ciel’s room. There he asks Finnian to leave for a while. Although Finnian resists with all his strength, he is unable to stop Sebastian. After Sebastian throws him out of the room, Finnian is shocked that Sebastian didn’t even flinch under his full strength. 
Sebastian starts talking to Ciel telepathically. He asks Ciel if he’s decided to abandon his position as the Queen’s watchdog.  The darkness slowly envelops Ciel as Sebastian issues his ultimatum—abandoning his revenge halfway is against the contract.  He was going to follow Tanaka’s suggestion and wait, but now they are out of time. He finally declares that it’s a boring end to Ciel’s journey, and he doubts that Ciel will be able to fill him up. 
After escaping his inner world, Ciel wakes up in the darkness; he orders Sebastian to instantly let go of him. Sebastian smiles and states that he’s glad his “Young Master” has returned to him. Ciel responds that it was a terrible wake up call.  Sitting up in bed, Ciel suddenly puts his foot on Sebastian’s shoulder—he asks Sebastian if he was really trying to eat him just now.  Sebastian lightly responds that he was only 90% serious.
After a few minutes, Ciel tells Sebastian to let “them” in; he’ll talk to them now. Sebastian opens the door, and all of the servants tumble into the room.  Sebastian remarks that they’re really rude for listening at their master’s door. Finnian tries to lunge on to Ciel, but Sebastian stops him. Ciel smiles and offers him his hand instead; crying, Finnian takes it. 
All of them, Sebastian included, then line up by Ciel’s bedside. Ciel speaks—because of his carelessness, they all suffered and worried. He asks them to forgive him. Although they are surprised, he adds determinedly that they will never see him in such a sorry state again. He finally asks that they continue to serve him.  They all respond with “Yes, My Lord.”
After a few minutes of the servants’ light banter, Ciel also makes another request—he wants them to forget how he was until now. Mey-Rin deduces that Ciel also recalls his off-the-charts behavior.  Ciel adds that he didn’t want to behave like that. Baldroy concludes that Ciel reacted the same way as soldiers. On the battlefield, when they are wounded for the first time, they panic.  Sebastian wonders if the attack’s aim was purely psychological. When Ciel asks him to explain, Sebastian relates the news about the Queen’s letter. He also had the components of the antidote analyzed. When Ciel reads the Queen’s letter, everything starts to fall into place. However, he’s incredibly annoyed with the Queen’s final request—she wants the “little green witch to come to tea”. 
Ciel knows this request won’t be easy to accomplish. Sebastian adds that even the Queen’s selfishness is incomparable to Ciel’s.  Finally, Ciel tells the entire household to make preparations to leave—further instructions will come later. When they exit the room, Ciel tells Sebastian to make more tea so he can really wake up and discuss all the details with him. 
Sebastian and Ciel then visit Sullivan. When she finds them outside her window, she’s shocked.  Ciel responds that there’s no reason for her to be surprised since she herself is a witch.  He adds that he wanted to thank her before leaving; he just wanted to offer her a chance to go to the outside world.  Although she hesitates, she accepts when Ciel calls her his “friend”  Furthermore, Sebastian adds that she’ll have to enter society as a debutante.  Then they both take her hand and lead her to the underground chamber where the magic circle is. Although she’s surprised, they insist that this is the entrance to the outside world. When Sebastian opens the entrance underneath the magic circle, Sullivan is shocked. He states that a “snake” told him about it;  she asks then questions if he’s a warlock, but he answers that he’s just one hell of a butler. 
Ciel then asks her about the duties of the Green Witch; she explains her family’s duties.  Sebastian next places his hand on the altar; she warns him he’ll suffer misfortune if he does that. However, Sebastian easily pulls a lever to reveal an elevator-style door. Sebastian carries an astounded Sullivan as they travel downwards. When the elevator doors open, they find a room full of monitors and radar equipment.  The “dots” represent the location of every villager. Sebastian explains that the “amulets” that everyone is wearing as werewolf protection are actually some kind of transmitter.  They can’t believe that the villagers managed to use such an advanced trick. At the same time, Sullivan’s horror continues to grow.
Suddenly, Sebastian hears someone coming, and they hide.  Entering another room, they find it full of giant cylinders. When they finally find a hiding spot, they witness some “werewolves” and humans talking. Unable to take anymore, Sullivan bursts out and accuses them of deceiving her. Amongst the confusion that follows, Sebastian reveals that the “werewolves” are people in costumes.  Furthermore, the “miasma” is actually a chemical weapon made in this factory.
Sebastian continues to guard Ciel and Sullivan while Sullivan’s “mother” reveals the truth.  As Sullivan screams in agony, Wolfram rushes at Sebastian; Sebastian easily knocks him aside. Comforting Sullivan, Ciel declares that children are not “tools”; he can’t believe a mother would ruin her child’s feet just for a chemical formula.  Ciel suddenly fires a shot in the air, grabs Sullivan, and heads for the elevator. As the doors close, he orders Sebastian to take care of them. 
Sebastian deals with the “werewolves”.  He states this is their reward for exposing his master to the mustard gas.  They try to fight him by releasing the gas, but it has no affect on Sebastian. When Sebastian sets the room on fire, he recalls Ciel’s orders.  As he helped Ciel dress, he asked what method he should use to destroy their enemies. Ciel confidently stated he won’t be around, and there won’t be any survivors—Sebastian is allowed to go crazy like a beast. Presently, Sebastian remarks that he’ll act the way Ciel desires, simply because he’s one hell of a butler.  After he’s done with them, he looks at his pocket watch—he comments that if he doesn’t hurry, breakfast will be late. 
Sebastian luckily arrives in time to save Ciel from the cannon fire. Ciel immediately scolds him for being late. Sebastian states that he has all the gas’ samples.  Ciel tells Baldroy and Snake to help the others get to the train. He also hands the case to Snake. Finally, he states he and Sebastian will take care of the Panzer.
As the tank comes toward them, Sebastian holds Ciel in one arm since he forgot to bring an extra pair of shoes. He slyly adds that Ciel looks so petite in his dress-completely resembling the Green Witch. Ciel orders Sebastian to destroy the Panzer.  Sebastian uses physical strength, Baldroy’s “special supplies”, and Ciel’s guidance to completely destroy it. When it is in flames, Ciel comments that it is now a moving oven; Sebastian agrees wholeheartedly. 
Ciel suddenly sees two, German Shinigami. They are shocked that he can see them. Sascha thinks that it may be because Ciel himself is close to death or because of his lineage. Nevertheless, they take their leave and disappear. 
Sebastian and Ciel arrive in the nick of time to save the household from the German female officer. Plunging his knife into her throat, Sebastian states some food escaped from the oven.  Ciel orders Sebastian to rescue Wolfram. Mey-Rin and Sebastian help Sullivan with his treatment. When he comes to, Sebastian tells him a butler is not allowed to dies before his master—his senior, Tanaka, told him that.  Ciel tells Diederich they need a place to hide. Diederich tells him they are heading there right now. Sebastian asks Ciel why he asked him to save Wolfram. Ciel answers he needed Wolfram to look after Sullivan; she is his insurance.  Sebastian smiles and asks why Ciel needs “insurance” when he has him. Ciel responds that Sebastian is the least trustworthy of all. 
The entire group then arrives at Diederich’s castle. Later, Sebastian helps Ciel with his bath.  They discuss the case; Sebastian concludes that the German’s technology is now in England’s hands. He is amazed by how fast humans can change. He adds teasingly, though, that Ciel still does not grow taller at all.  Piqued, Ciel replies he doesn’t need to hear that from a demon who hasn’t changed in centuries.
Ciel and Sebastian then talk with Diederich. He tells them that Undertaker came to visit him and then left for France. He said that “Earl Phantomhive is still with us”, shocking Ciel and Sebastian since they cannot determine which Earl he was referring to. Diederich responds that Undertaker is always talking nonsense, so he doesn’t pay much attention to him. 
Ciel and Sullivan then sit down to dinner. Seeing her deplorable manners, Sebastian states he can’t wait to teach her. Finally, Ciel and Sebastian talk with Wolfram. He asks Sebastian why he saved him, and Sebastian responds because his Master asked him to.  Ciel adds that it was extremely irresponsible of Wolfram to leave Sullivan with complete strangers.  They’ll both accompany them to England.
Wolfram and Sullivan are disguised on their journey to England.  Before Ciel leaves, Diederich tells him to be careful. When the group arrives in London, Sebastian asks Wolfram to refrain from speaking in German because it will draw unwanted attention. They leave the servants (who head for the mansion) and proceed to Nina Hopkins’s establishment to procure a wardrobe for Sullivan’s meeting with the Queen. After the little adventure there, Ciel and Sebastian return with Sullivan and Wolfram to the mansion. Agni and Soma greet them. After a whole day of fun, lightheartedness, and more misunderstandings (mainly between Ciel and Elizabeth), Ciel finally retires for the day.
Blue Cult Arc
The night before Sieglinde Sullivan's expected audience with Queen Victoria, Sieglinde and Wolfram Gelzer talk with Ciel Phantomhive and Sebastian in the Phantomhive Manor. Much to Sieglinde's and Wolfram's surprise, Ciel orders her to give the Queen the process to make mustard gas. Wolfram is worried that Sieglinde will be exploited again, as she was by the German military, but Sebastian points out that it is, truly, Sieglinde's choice whether or not she is used or uses others; he adds that Sieglinde is, after all, an extraordinary genius who possesses information that could afford her personal treatment on an international scale. Ciel also states that, because he is Sieglinde's friend, he knows she will never stop studying, but in order to gain new knowledge, she will need a lot of money, which Queen Victoria can provide if Sieglinde works under her. Ciel goes on to say that all Sieglinde has is her intellect and information on mustard gas. Furthermore, he forbids her from speaking about the SuLIN gas. Sieglinde is shocked, and Sebastian explains that mustard gas does not compare to the SuLIN gas in terms of lethality, and thus, if employed in England, countless deaths will result. Sieglinde vows to always keep SuLIN a secret. Ciel reminds her to consider everyone, including him, as an adversary who is trying to use her, and he encourages her to use everyone else in order to obtain the future she desires.
The following day outside Buckingham Palace, Sebastian, Ciel, Sieglinde, and Wolfram meet Charles Grey and Charles Phipps who offer to lead them into the palace. While the other three follow the pair, Sebastian remains by the carriage. Grey asks if he is coming with them, and Sebastian replies that he cannot since he has an errand to run for Ciel. At Ciel's behest, Sebastian heads to the ocean, swims deep in it, and tosses the suitcase of SuLIN samples into a chasm. Afterward, he reunites with Ciel, Sieglinde, and Wolfram outside the palace and assures Ciel that he has done as ordered. Ciel tells him that he is exhausted and wishes to hurry home to sleep. He, then, stares at Sebastian for a while, much to Sebastian's confusion, but Ciel does not explain himself when questioned by him.
The next morning, Sebastian notices that Ciel is agitated while sleeping and is about to wake him, but Ciel jolts awake, simultaneously grabbing Sebastian's wrist. Ciel claims that he is fine, however, and releases him. Sebastian, then, hands him a cup of tea.
One morning, while Ciel is in his office, Sebastian comes in with a letter from Queen Victoria; it explains in detail about a new case involving the Sphere Music Hall that she wants Ciel to investigate.
Abruptly, a greatly dismayed Edward Midford rushes in, shouting Ciel's name. Surprised, Ciel comments that Edward looks pale. Edward, then, reveals that Elizabeth Midford has run away from the Midford Manor, shocking Sebastian and Ciel.
Sebastian advises him to calm down and explain the situation. Once Edward and Ciel are seated, the former informs him about a certain meetingHerman Greenhill introduced him to a month ago; he took Elizabeth along to one of them, at her insistence, and she got her fortune told by Bravat; afterward, she attended the meeting on a regular basis, infatuated with the place, and ultimately stopped coming home.
Edward and Ciel simultaneously state that the meeting is held at the Sphere Music Hall. Edward is surprised that Ciel knows the name. Both Ciel and Sebastian remark on Queen Victoria's "fearsome" powers of observation, and the former explains to Edward that the Queen has requested him to investigate the music hall. When Ciel says that their priority is locating Elizabeth, Edward tells him that he can see Elizabeth if he goes to the music hall: Edward had gone to the meetings a few times and attempted to convince her to return home, but each time, Elizabeth refused, claiming that her "radiance" lies here at the music hall. Ciel declares that they will have to witness it for themselves and orders Sebastian to prepare a carriage for them.
After Ciel, Sebastian, and Edward arrive at the Sphere Music Hall, Edward points out the absence of Elizabeth, Herman, Edgar Redmond, Lawrence Bluewer, and Gregory Violet. Two young woman approach Sebastian, asking if it is his first time here. Sebastian affirms that it is, claiming that he came after hearing how festive the place is, and he inquires about the purpose of the activities there. They say that the place is not formal enough to have an established purpose and that they usually just converse and share advice; fundamentally, they purify themselves so that they can live each day with a positive outlook and that they go there to "pass this radiant time in one another's company." After extolling the place some more, they wave goodbye to Sebastian, and he perceives strange bracelets around their wrists. Ciel says that the environment is unsettling, to which Sebastian agrees. A dismayed Sebastian remarks that desires, like hatred and envy, do not exist on the faces of those gathered there, and because the people there are lacking desire, which he deems essential to the charm of mankind, the place is "unbearably dull."
Edward shows them who Bravat is. Ciel proposes that they get their fortunes told, quipping that Bravat would be no fraud if he can "divine the sorrows" of a demon, to which Sebastian responds that aside from the selfishness of his master, which is his primary concern, his mind is free of worries. After Bravat finishes with a customer, Sebastian steps up and requests for his fortune to be told. Bravat is startled when he sees Sebastian and Ciel, and then he tells Sebastian to sit down, while Ciel notes that the air has shifted.
Sebastian asks for Bravat's needle so that he can prick his fingertip, which is a required procedure for one to get one's fortune told. Bravat maintains that that will not be necessary since Sebastian does not have the divine protection of any star, something he says he can deduce merely by the sight of Sebastian. He yanks Sebastian toward him and whispers in his ear that Sebastian is not human, shocking Sebastian and Ciel.
Afterwards, Bravat laughs, stating that, now, Sebastian and Ciel must be assuming that he is not human either. When Sebastian asks why Bravat thinks he is not human, Bravat asserts that he can tell that much simply by looking; he describes Sebastian as a darkness that "swallows up the radiance of stars shining with all their might"; stars drawn to him will "stray from their orbits to wander the murk for all eternity," because he is like a collapsar. The aroused crowd begin demanding that Sebastian leave immediately. Bravat silences them with a flick of his wrist, and he then urges Sebastian to depart from the place for he has frightened the stars. On cue, two men grab Sebastian; Sebastian secretly steals one of their amulets as they escort him out of the music hall.
Subsequently, Sebastian is tossed outside. The two men tell him that he is not welcome because he is without the divine protection of a star. After they leave, Sebastian contemplates the anomalies of the place and is shocked when he senses a certain presence. To his delight, he sees a cat. He embraces it, extolling its features, and affirms that if Ciel were not allergic to cats, he would have gladly kept a cat of his own at the Phantomhive Manor. The cat finds the amulet Sebastian has stolen from one of the men, and he says that the amulet is not for the cat to eat. He then comments that Ciel will be in the music hall for some time yet; having already anticipated that, he says that he has smoked salmon ready in the carriage and requests that the cat stays with him for a little while.
After the cat leaves him, Sebastian drops by a tavern, where he is approached by a prostitute, who offers to pour his drink for him. Sebastian thanks her, disclosing that he was just rejected by a great beauty, alluding to the cat. She then makes the offer to comfort him, saying that she will even cut him a deal. Sebastian states that he feels like talking to someone and volunteers to treat her with food, to her joy. She looks at the menu, admits that she cannot read, and asks if he can.
Soon after, while the prostitute is eating, Sebastian shows her a bracelet, and she reveals that a friend of hers was wearing a similar one and that a lot of her customers had one, too. She says that she asked her friend why she did not sell it, since she is penniless, and her friend said that there is a room with all "kinds of fun events" that one cannot get into without a bracelet. She remarks that it sounded too good to be true for her, since nothing that tempting is free.
Later, another prostitute joins them, and Sebastian hears a popular song originating from the Sphere Music Hall from them. Subsequently, the three of them head over to the music hall, where Sebastian welcomes Ciel back. Ciel and Edward turn around, and are dumbfounded when they see him with two prostitutes. A flustered Edward scolds Sebastian for having them accompany him, saying that he is still on the job. The women soon leave.
At Ciel's townhouse, Sebastian accommodates Ciel and Edward with tea, while details of the event that transpired at the music hall are relayed to him. When Edward describes the song he heard there as the kind where one would start humming without realizing it, Sebastian sings and dances to a verse, baffling Ciel and Edward. Edward asks if Sebastian had slipped back into the hall, Sebastian responds the negative and is about to explain, but is interrupted by Agni and Soma Asman Kadar, who offer them sandesh.
When Soma asks if the song Sebastian sang is "all the rage" in England, for he hears it sung quite often by kids when he goes out to the market with Agni, Ciel concludes that Sebastian has heard the song from the prostitutes, and Sebastian confesses that that is the case; the woman who sang it to him has heard it from another woman in the same line of work. When Edward questions this, Sebastian explains that literacy in the lower classes of England is still very low, and thus, word of mouth is the most effective method to spread information; furthermore, the best way of making something stick with people by word of mouth is through a song, for words put in a repeating rhythm are much easier to remember than those spoken, which is why hymns and folk songs are used to convey religious teachings and moral lessons.
After both Edward and Ciel make inferences from what Sebastian told them, Sebastian pulls out a bracelet, saying that he took it from one of the men who kicked him out of the music hall and that he was querying people in town about it, when the prostitute from earlier recognized it. He narrates his conversation with her to them, informing them that while the Saturday meetings are open to anyone, there are closed events that only those who have had their fortunes told can attend.
(To Ciel Phantomhive) "It seems your talent for dancing is non-existent. It must be crushing, young master."
"I am the butler of the Phantomhive family. It goes without saying that I can manage something like this."
"I am one hell of a butler. So long as the young master possesses the 'mark of the covenant' . . . I am his faithful dog. A 'sacrifice' . . . a 'wish' . . . and a 'covenant' bind me to my master.
"Young master. Forgive me. As butler of the Phantomhive Family, this is an unpardonable disgrace . . . I do not know how I should atone for this . . . I have been unable to prepare dinner this evening."
"A butler begins his day early. He is the last to finish his work late at night, and the first to begin work in the morning. Such is the duty of a butler who manages the household."
(Referring to Mey-Rin) "Why, this imbec—that is to say, housemaid. It would seem the problem no longer lies in her eyesight. Why does she fail to realize that there is something clearly wrong with her own brain and not the instructions? Word has it that the public adores silly maids. But I do not think I will ever understand it, and I have no intention of even trying to do so. I myself would like to wring her neck."
(Referring to Baldroy) "Why this imbec—rather chef. You should talk about cooking after you have actually cooked something. I believe eighty percent of what you have managed to cook has been charcoal. The other twenty percent was hazardous waste. Save your art for you hairstyle, and cook something edible . . . otherwise . . . I wish for you to become charcoal yourself."
(Referring to Finnian) "Why this imbec—this imbecile! How can a gardener be so clumsy? Though the saying goes, 'an idiot and a pair of scissors can both be of use,' giving this useless idiot a pair of scissors is trouble in itself. He refers to something that happened two or three days ago as being 'a while back.' The way his brain can easily cast aside a blunder of that degree . . . I have surpassed anger, and I am, in fact rather impressed."
(About Finnian) "I have lived for quite some time, but this is my first encounter with a being from outer space. How does he expect me to respond to his beaming smile?"
"I have had enough. In times like these, yes . . . I want to see her. A supple body, flowing black hair. I must hurry . . . to the place where she awaits me . . . to her. I find cats most agreeable. They only say (do) that which is necessary. They are quite adorable. They do not exist in my world. Pets do exist over there, but . . . they leave much to be desired."
"I, your 'chessman,' am your 'might,' your 'hands' and 'feet' . . . you alone will decide . . . you yourself will choose . . . and for that, I shall become your 'might.' You said as much . . . 'that day.' I am merely a 'butler.' I will not cross that line. I only faithfully execute what the master orders, and answer what the master asks me. By your order . . . I, your 'chessman' . . . shall become your 'sword.' Now then . . . let us move into check, Master."
(To Grell Sutcliff) "From the time . . . my master called me 'Sebastian' . . . that word became my covenant and christened me anew. I have been 'Sebastian' since that day. I vowed as much to the moon, you see?"
(While stepping on Grell Sutcliff's face) "I do not enjoy being stepped on . . . but being the one doing the stepping is another story altogether."
"Humans are easily tempted. When they are poised on the edge of hellish despair . . . and a spider's thread of salvation presents itself, they will invariably grasp it . . . no matter the manner of human."
(To Frances Midford, about Ciel Phantomhive) "The young master has an inordinate talent for games. Consequently, he seems to over-confidently believe that he 'cannot lose.' But at times, it will be necessary for him . . . to carry himself with humility while striving for his goal. Otherwise, he will eventually trip up . . . as the place for which young master aims is not an easy one to reach. Perhaps it is not my place to say this, but . . . I would like you to be an exemplar for my master, Marchioness."
(To the other Phantomhive servants) "Why do you three not kowtow and beg Mister Agni for the dirt under his nails? Your lives might gain a little value that way." 
(To Ciel Phantomhive) "—Oh? What a tiny master this. You have summoned me. That fact will not change for all eternity . . . and the sacrifice that has been made will never return. Make your choice."
(To Agni) "England or India, it makes no difference. No matter where or from what era, they are all alike . . . those beings called humans."
(To Agni) "Did you say . . . friends? This is my first time hearing that from someone."
(To William T. Spears) "I grew weary of indiscriminately devouring souls long ago. The more ravenous I am . . . the more delicious the dinner."
(To William T. Spears) "My goodness. That must be quite a chore to handle alone. Still, a large number of souls . . . shall I lend you a hand?"
(To Ciel Phantomhive) "As long as there is the contract, I will protect your life. However, if you make a mistake of your own accord, you will possibly suffer a painful experience while alive. You already know that, don't you? Any game becomes boring when it lacks thrills."
(To Beast) "Why not forget just for the tonight? Drown in pleasure . . . and breathe sweet poison deep into your lungs."
(To Ciel Phantomhive) "You are different from demons who are revolting and possess complex evil intent. Telling lies . . . desperately struggling, kicking down other people. Stealing the stolen, while repeating your reasons over and over. And even so, you aim for the horizon over the hills. That's why humans are interesting."
(Referring to Ciel Phantomhive) "He turns his back towards the light without hesitation. That figure that charges into the abyss at a dignified pace. How beautiful and foolish."
(To Undertaker) "That's where we differ. Exactly because 'death' is such a hopeless and definite 'end' . . . it is beautiful."
(About Ciel Phantomhive) "Ah, my master. You're misunderstanding something. What I find most entertaining now . . . is playing the butler in my game with you. It's not behaving like a frenzied beast. However, if that's how you like me . . . I'll act accordingly. Because I'm one hell of a butler."
"If it's your wish I will follow you everywhere. Even if your throne crumbles and your shiny crown turns to rust. Beside you as you lie, softly down, I will be. Until I hear the words, 'checkmate'."
(To Ciel Phantomhive) "For a king to survive it's good for him to be able to skillfully manipulate the other pieces using both the knight and the queen. Beneath the throne the bodies of your pieces will pile up along with your sins. You must not lose."
(To Claude Faustus) "Demons have eternal life. We've grown weary of living so long . . . far too long. My young master's presence lends spice to the world we're glutted on."
(About Queen Victoria) " As expected of her majesty—even her selfishness is at a royal level." 
(Thinking about Ciel Phantomhive's orders) "Ohh — dear master. I am afraid you have the wrong impression. My greatest amusement at the moment, you see, is the game I, while bound by my butler livery, am playing against you. So it would not do to act on impulse and behave like a beast. However, if you are particular to my being such a devil . . . I shall act accordingly. For I am a devil of a butler." 
In the Victorian era, butlers were called by their last name; Sebastian should technically be called Michaelis by Ciel and Mr. Michaelis by the other servants.
Whenever Sebastian was summoned in the manga, he appeared in his true demon form; in the anime, he appears as a crow or raven accompanied by a rain of feathers.
In early drafts, Sebastian's hair was styled with a 7:3 ratio parting. But because Yana Toboso's editorial staff and colleagues did not like the hairstyle, she had to move his parting into the middle.
Sebastian's last name originates from the Japanese word mikairi meaning "repayment," signifying his contract with Ciel.