Assassination Classroom Episode 15 Recap & Characters (Spoiler-Free)

Episode Summary

End-of-Term Time

Ahead of the final exams, Korosensei motivates Class E with a prize: whoever tops any subject may shoot off one of his tentacles. Shindo tells Class E they must beat the Big Five of Class A to return to the main campus.

At the library, the Big Five challenge Isogai's study group, the bet is made, and Gakushu Asano drafts a contract with a truth clause. On exam day, Karasuma tells the class Ritsu could not take part and a proxy was used.

• Exam motivation and tentacle prize

  Korosensei sets a goal for Class E: the top score in any subject earns the right to shoot one of his tentacles, with each cut lowering his speed by 10%.

• Library confrontation with the Big Five

  Isogai invites Nagisa, Kayano, Nakamura, Kanzaki and Okuda to study at the main campus library, where the Big Five confront them and make a hasty bet that the winner orders the losers around. Nagisa, Kanzaki and Nakamura threaten their taunters with pencils.

• Asano's contract with truth clause

  Gakushu Asano drafts a contract for both classes with fifty clauses, including one requiring Class E to answer any question truthfully if Class A wins, which he intends to use to learn the secret of Class E's teacher.

• Ritsu proxy at the English exam

  On the morning of the English exam, Nakamura and Nagisa find a Ritsu proxy in their room; Karasuma explains that the Chairman would not let the AI take part, so a stand-in tutored by Ritsu sits the exam.

Recent Timeline

• Class E vs baseball club exhibition match (Episode 12)

  At the ball game tournament, Class E's boys played an exhibition match against the baseball club with Korosensei coaching. Bunts loaded the bases and Sugino's triple put them three runs ahead, until the chairman made the club's coach feign illness, took over, and shut down the bunts with an all-infield shift. In the last inning, with the bases loaded on the club's copied bunts, Karma and Isogai fielded at zero distance in front of Shindo, who lost his nerve, and Class E won. Korosensei called it one win each against the chairman and set the finals as the decider.

• Takaoka dismissed after knife challenge (Episode 13)

  Takaoka, who had taken over PE with violent training, proposed a duel in which a student would face him with a real knife while he stayed unarmed. Nagisa defeated him and pinned him with the blade at his throat. Chairman Asano then dismissed Takaoka for ruling by violence and fear, reminding him that the Ministry of Defense has no say over the school's teachers.

• Pool dam trap ambush (Episode 14)

  Terasaka fired the signal gun Shiro had given him, setting off an explosion that destroyed the pool dam and swept the class toward a cliff until Korosensei saved them all. In Karma's counter-plan Terasaka took Itona's blow, and the smoke-tainted shirt and the class's splashing weakened Itona until Shiro admitted defeat. Terasaka became the class's ally.

• Final-exam tentacle prize (Episode 15)

  Before the finals, Korosensei promised that whoever topped any subject could shoot off one of his tentacles, each loss cutting his speed by 10%. Shindo told Sugino that Class E would have to beat Class A's Big Five to return to the main campus.

• Library bet with Class A Big Five (Episode 15)

  At the main campus library, the Big Five picked on Isogai's study group of Nagisa, Kayano, Nakamura, Kanzaki and Okuda and made a hasty bet that the winner would order the losers around. When one of them said he would stake his life on it, Nagisa, Kanzaki and Nakamura pointed their pencils at the taunters' throats and eyes. Gakushu Asano turned the bet into a contract for both classes with 50 other clauses, including one requiring Class E to answer any question truthfully if Class A won.

Character Graph

Nagisa Shiota (Nagisa)

Class 3-E student

Class 3-E student who keeps notes on Korosensei's weaknesses. Small and unassuming, he beat Takaoka in the real-knife challenge, and Karasuma recognized him as a natural-born assassin.

• Assassin

  Carried out the knife-and-grenade attack in episode 1 and accepts that he and his classmates are assassins whose target is their own teacher.

• Real-knife challenge

  Walked up to Takaoka as calmly as if walking to school, feinted at his neck from behind and pinned him with the knife at his throat.

• Korosensei (Mentor, Mixed)

  His homeroom teacher and assassination target; Nagisa respects him as a good teacher while aiming to kill him.

• Ryoma Terasaka (Colleague, Mixed)

  Classmate who saddled him with the plan and the grenade for the first assassination attempt in episode 1. During the pool incident Nagisa urged him to share his plan with the class and was turned down, but Terasaka is now part of the class.

Isogai

Class 3-E student

Class 3-E's male class representative. Before the finals he invited Nagisa and others to study at the main campus library, where the bet with the Big Five was made.

• Nagisa Shiota (Colleague, Affinity)

  Classmate he invited to his study group at the main campus library before the finals, where they ran into the Big Five together.

Kayano

Class 3-E student

Class 3-E student close to Nagisa who came up with the name 'Korosensei' in episode 1. Before the finals she joined Isogai's library study group, where the Big Five confronted them.

• Nagisa Shiota (Colleague, Affinity)

  Close friend; they joined Isogai's library study group together and ran into the Big Five.

Karma Akabane

Class 3-E student

Class 3-E student back from a school suspension who is sharp and fearless; he was the first to wound Korosensei and chose to stay in Class E because assassination is more fun. Sure he would win anyway, he skipped serious study for the finals despite Korosensei's warnings.

• Government briefing

  While suspended, he was briefed by a Ministry of Defense official on the classified assassination and warned that his memory would be wiped if he talked.

• Stance toward Class E

  Chose to stay in Class E because assassination is more enjoyable than returning to his former class; scored a perfect mathematics score despite the changed questions.

• Challenge to teacher

  Challenged Korosensei to admit that leaving over the failed top-fifty goal was an escape from assassination.

• Korosensei (Other, Mixed)

  His assassination target, whose genuine care has begun to change Karma's feelings, though he still means to kill him and teases him over his failures.

Kanzaki

Class 3-E student

Class 3-E student who once hid her gaming skill from her family, who disapproved of such interests. Before the finals she joined Isogai's library study group and faced down the Big Five with a pencil.

• Change of self

  Realized after Korosensei's influence that moving forward with confidence matters more than clothes, interests, and labels adopted under others' influence.

• Korosensei (Mentor, Affinity)

  Teacher whose words after the abduction helped her stop worrying about where she belongs.

Itona Horibe (Itona)

Transfer student

Second transfer student, brought by his guardian Shiro, whose hair is made of tentacles; he calls Korosensei his brother. He returned with Shiro to ambush Korosensei at the pool but withdrew after the class soaked his tentacles.

• Fighting style

  Prefers to fight only those stronger than himself; his hair wriggles with tentacles like Korosensei's.

• Shiro (Guardian, Mixed)

  Guardian who brought him to school, set up the duel, and joined him in the pool ambush on Korosensei.

• Korosensei (Other, Hostility)

  Calls him 'brother' and wants to kill him to prove he is the stronger.

Korosensei

Class 3-E teacher · Super creature

Super creature who destroyed 70 percent of the moon, moves at Mach 20 and teaches Class 3-E as its homeroom teacher, vowing to destroy Earth next March. Before the finals he offered the right to destroy one of his tentacles to whoever tops a subject.

• Assassination target

  He offered to teach Class 3-E himself, and the government reluctantly accepted on condition that he never harms the students; whoever kills him by March earns ten billion yen.

• Teaching style

  Teaches the class with unusual methods, praising effort and creativity while chastising weak tactics.

• Sibling claim

  Itona and Shiro claim he is Itona's brother, but he insists he was raised an only child; the claim remains unexplained.

• Nagisa Shiota (Mentor, Mixed)

  Student who carried out the grenade attack in episode 1; Korosensei values his attempts and saw his talent against Takaoka, while Nagisa respects him as a teacher.

• Itona Horibe (Other, Mixed)

  Transfer student who calls him 'brother' and challenged him to a duel to the death; even after the pool ambush he invited Itona to join the class, but Itona left.

Shiro

Itona's guardian

A man dressed entirely in white who introduces himself as Itona's guardian and arranges his fights with Korosensei. He used Terasaka to blow the pool dam and weaken Korosensei with treated water, but withdrew when the class turned the fight around.

• Robe

  His white robe is made of anti-sensei material.

• Itona Horibe (Guardian, Mixed)

  Boy in his care whom he calls Korosensei's brother; when the pool ambush failed he admitted defeat and withdrew with him.

• Korosensei (Other, Hostility)

  Target he insists is Itona's brother and pits Itona against; at the pool he used Terasaka to weaken him.

Chairman (Gakuho Asano)

School chairman

Chairman of Kunugigaoka who keeps Class E at the bottom so that fear of falling into it drives the other students. Before the finals he refused to let Ritsu sit the exams, and his son Gakushu seeks Korosensei's secret to gain leverage over him.

• Stance toward Class E

  Insists Class E remain at the bottom in grades and treatment so fear of joining it motivates other students; ordered Korosensei to stop the class from defying outside students.

• Changed exam scope

  Reportedly personally taught the changed material to the other classes before the midterms.

• Club takeover

  Intimidates the club's coach into pretending to be sick and takes over the team.

• Korosensei (Hierarchy, Colleague, Hostility)

  Pressures Korosensei with his system, once challenging him to solve a problem in a second; as rival coach in the baseball match, his methods clashed with Korosensei's, who claimed victory.

Ryoma Terasaka (Terasaka)

Class 3-E student

Class 3-E student who felt left out as his classmates warmed to Korosensei and was used by Shiro in the pool plan. After taking Itona's blow in Karma's counterattack, he found his place in the class.

• Manipulated plan

  Accepted cash from Shiro to carry out the pool plan, then realized he had been used as a pawn.

• Shiro (Other, Hostility)

  Man who claimed to understand his frustration, promised to return Class E to how it was before Korosensei came, and gave him cash and a signal gun; realizing he had been used as a pawn, Terasaka turned against him.

• Itona Horibe (Other, Hostility)

  Transfer student who told him he has no vision and will always be weaker than Karma; at the pool Terasaka took his tentacle blow head-on.

• Karma Akabane (Colleague, Mixed)

  Karma goaded him to kill Korosensei himself if he disliked him; in the pool fight Terasaka took Itona's blow as Karma planned, then called Karma out for doing nothing and taking the credit, and the class dragged Karma into the water.

Gakushu Asano (Gakushu)

Class A · Chairman's son

Leader of Class A's Big Five, the chairman's only son, who rallies Class A and wants to learn the truth about E-class's teacher to blackmail his father.

• Contract

  Drafted the bet contract for Classes A and E, adding a clause that E-class must answer any question truthfully if A wins.

• Korosensei (Other, Hostility)

  Class E's mysterious, much-rumoured teacher; Gakushu wants to uncover his secret and use it to control his father.

• Chairman (Family, Hostility)

  His father; Gakushu wants Korosensei's secret to put a leash on him.

World Memo

• Crescent moon and the destruction of Earth

  At the start of the students' third year the moon suddenly exploded into a permanent crescent. The creature responsible has declared that he will destroy Earth next March in the same way, a standing threat that frames the assassination.

• Government-sanctioned assassination and reward

  The government reluctantly accepted the creature's own offer to teach Class 3-E on condition that he harms no students, and secretly tasked the class with killing him, since public knowledge would cause global panic. A successful assassination is rewarded with 10 billion yen.

• Anti-sensei weapons

  The government developed anti-sensei BBs and knives that are harmless to humans but break down the creature's cells, and supplies them to the students.

• Class E's place in the school system

  Kunugigaoka's Class E is sent every day to an isolated mountaintop campus and discriminated against as the lowest-ranked class, nicknamed the E-as-in-End Class. The chairman deliberately keeps it at the bottom in grades and treatment so that fear of falling into it drives the other students. To escape, a student must rank in the top 50 of the 186 third-years and get permission from their former homeroom teacher.

• AI counted as student

  Ritsu, the autonomous fixed artillery, is registered as a student, so Korosensei must not harm her. Because the Chairman would not let an AI sit the exams, a stand-in tutored by Ritsu took her place.

• Final-exam tentacle prize

  Korosensei promised that any student who tops a subject in the finals may shoot off one of his tentacles. Each lost tentacle cuts his speed by 10%.

• Final exam bet between Class A and Class E

  A bet between Class E and Class A's Big Five, led by Gakushu Asano: the class that takes more of the five subjects can give the loser one order. Asano turned it into a contract with 50 other clauses, one of which requires Class E to answer any question truthfully if Class A wins.

Clue Board

• Real name unknown (Episode 1)

  Korosensei says he has no name worth giving and lets the class pick one; Kayano comes up with 'Korosensei'. His real name remains unknown.

• Woman in the ruins (Episode 1)

  In a brief flashback Korosensei holds a bleeding woman in a ruined building; she tells him that with those tentacles he would surely become a wonderful teacher. Who she is remains unknown.

• A promise to someone (Episode 2)

  Korosensei tells Nagisa he became their teacher to keep a promise he made to someone. He does not say who.

• Unknown motive for the deal (Episode 1)

  Korosensei himself offered to teach Class 3-E, and the government reluctantly agreed on condition that he never harms the students, but no one knows why he wants to teach. His motive remains unexplained.

• Vague answer on the punishment (Episode 4)

  Nagisa grows suspicious after Korosensei's punishment of Irina, and Korosensei gives only a vague answer when asked for clarification, leaving the reason open.

• The chairman's words (Episode 6)

  The chairman, briefed by the Ministry of Defense, calls Korosensei a sad being who meant to become the world's savior but ended up a great evil that will destroy it. What else he knows is not shown.

• Korosensei's past romances (Episode 8)

  Karasuma started to ask whether Korosensei's romances dated from a time when he had two arms and two legs, then let it drop. What Korosensei used to look like is still unexplained.

• Shiro and Itona's score over the moon (Episode 10)

  The night before Itona's arrival, Shiro told him that Korosensei is his brother and will be his teacher from tomorrow, then said they would go settle the score over the moon. What the two hold against Korosensei over the moon is still unexplained.

• Claimed brotherhood with Itona (Episode 11)

  Shiro insists Itona and Korosensei are brothers despite different parents and upbringings, and the fight is presented as proof. Korosensei says he was raised as an only child and does not know what Itona means. The relation is unresolved.

• Source of Itona's tentacles (Episode 11)

  Itona has tentacles like Korosensei's growing from his hair. Korosensei demands to know where they came from, but Shiro refuses to answer, so the origin stays unexplained.

• Reason for current form and teaching Class E (Episode 11)

  Students ask why Korosensei takes his current form and why he teaches Class E. He answers seriously that they must earn these answers by trying to kill him, so the reason remains hidden.

• Another critical weakness of Korosensei (Episode 14)

  A further weakness of Korosensei surfaced during the pool assault, described as far more important than his inability to swim. The class did not realize it at the time, and its nature is not revealed.

• Truthful-answer contract clause (Episode 15)

  Asano's contract requires Class E to answer any question truthfully if Class A wins, which could expose Korosensei's secret.

Deduction Board

Facts

• Tentacle prize

  Korosensei promised that whoever tops any subject in the finals may shoot off one of his tentacles; each lost tentacle cuts his speed by 10%.

• Bet made in the library

  At the main campus library, the Big Five picked on Isogai's study group and hastily made a bet that the winner orders the losers around.

• Ritsu's stand-in

  Because the Chairman would not let an AI sit the exams, a stand-in tutored by Ritsu took the exams in her place.

Evidence

• Contract truthfulness clause

  Asano's contract for Class A and E includes a clause requiring Class E to answer any question truthfully if Class A wins.

• Class E's strengths spotted

  The Big Five noticed that Kanzaki, Nakamura, Isogai and Okuda had ranked quite high in Japanese, English, social studies and science respectively in the midterms.

• Tougher exam questions

  The night before the exams, the Chairman supervised the exam writers, who produced questions that even Class A would struggle with.

Inferences

• Blackmail intent

  Gakushu Asano plans to use the information about Korosensei to control his father, the chairman.

• Karma's complacency

  Karma brushed off Korosensei's warnings and did not take the cramming seriously, sure he would ace the tests anyway, which leaves him open to a surprise.

• Grades decide the assassination

  Since each subject won costs Korosensei a tentacle and 10% of his speed, the exam results feed directly into the class's chances of killing him.

Suspicions

• The Chairman's promise

  The Chairman assured Karasuma and Irina he would not resort to petty tricks like in the midterms, yet he personally oversaw the exam writers the night before. Whether he will play fair is unclear.

• Another unnamed weakness

  Nagisa's narration says another weakness of Korosensei came up that day, more important than his inability to swim, but what it is has not been revealed yet.

• Withholds tentacle origin

  Shiro refuses to say where Itona got his tentacles

Battle Record

Class A and Class E settle a final exam contest under a contract: the winner orders the losers around, and Class E must answer truthfully if Class A wins.

Nagisa vs Takaoka real-knife challenge

Takaoka's authority duel · Episode 13

Location: Training ground outside the Class E building

Trigger: Takaoka proposes a real-knife fight to assert dominance over the class

Sides

• Takaoka's side — Challenger: Akira Takaoka
• Class E side — Champion: Nagisa Shiota

Outcome: Nagisa pins Takaoka and holds a knife to his throat; Korosensei declares the match over

Aftermath

• Takaoka furious and attempts to strike Nagisa, blocked by Karasuma
• Chairman Asano dismisses Takaoka for using violence to instill fear
• Takaoka leaves in shame; Karasuma returns as PE teacher

Pool dam trap ambush

Terasaka's plan with Shiro and Itona · Episode 14

Location: Forest pool and the cliff below its dam

Trigger: Terasaka's plan to have Itona push Korosensei into the pool so the class could kill him

Ambush versus Class E

• Shiro and Itona — attackers: Shiro, Itona
• Class E — target and defenders: Korosensei, Karma, Terasaka, Muramatsu, Yoshida, Sumire Hara, rest of Class E

Outcome: Shiro admits defeat and Itona withdraws; Class E wins.

Aftermath

• Class celebrates the victory
• Terasaka becomes an ally of the class
• Terasaka calls Karma out for taking the credit, and the class drags Karma into the water

Final exam bet between Class A and Class E

Class A vs Class E · Episode 15– (Ongoing)

Location: Main campus library and exam rooms

Trigger: The Big Five picked on Class E's study group in the main campus library and made a hasty bet that the winner orders the losers around; Gakushu Asano turned it into a contract

Contestants

• Class A — leader: Gakushu Asano / contestants: the Big Five
• Class E — contestants: Nagisa Shiota, Kaede Kayano, Rio Nakamura, Yukiko Kanzaki, Manami Okuda, Yuma Isogai

Outcome: Pending: the results have not been announced yet

Aftermath

• Both classes cram for the exams under the bet
• A Ritsu proxy takes the place of Ritsu in the English exam room

Ability Table

Season Summary

Season 1 — Season 1

Episodes 1–15

Korosensei, a tentacled creature that blew away 70 percent of the moon and vows to destroy Earth next March, becomes homeroom teacher of Class 3-E, the looked-down-upon 'End Class' of Kunugigaoka Junior High. The government offers a 10 billion yen bounty for the students to kill him by March, and Karasuma of the Ministry of Defense comes in as PE teacher to train them. Karma back from suspension, the assassin English teacher Irina, the AI transfer student Ritsu and the tentacled Itona brought by Shiro all take their shots at him, and through it all, including the Kyoto school trip, the students slowly regain their confidence. Chairman Gakuho Asano, who keeps Class E at the bottom, changes the midterm scope at the last minute, and at the ball game tournament the baseball club he coaches himself loses to Class E's boys; Korosensei leaves the deciding round with the chairman to the finals.

Nagisa reveals a talent for assassination by beating the brutal instructor Takaoka, and Terasaka, once used by Shiro in a pool trap, becomes part of the class.

Before the finals, Korosensei offers the right to destroy one tentacle to whoever tops a subject, while a hasty bet with Class A's Big Five becomes Gakushu Asano's contract, which hides a clause meant to expose Korosensei's secret.

Music Releases

• Jiriki Hongan Revolution (OP)
• Hello, shooting-star (ED)