Assassination Classroom
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50 free Assassination Classroom trivia questions with answers — trivia quiz, new questions added Oct 2026.
Assassination Classroom starts with a deal that should not work. A grinning, tentacled creature who has threatened to destroy the Earth agrees to spend twelve months teaching a class of junior high outcasts, and those same pupils are given the job of killing him before time runs out. What follows is part comedy, part thriller and, by the last episodes, one of the most affecting stories in modern anime. This quiz covers the whole story. Expect questions on Koro-sensei's powers and weaknesses, the pupils of Class 3-E and their individual talents, the staff and hired killers who pass through, the rivalry with the star pupils of the main campus, and the secrets revealed in the second season. Later questions step behind the scenes to the manga, the voice actors and the live-action films. It is written for fans who want to see how much they remember, whether you watched the anime once or read every volume. If you are here to put names to faces, plenty of questions ask you to identify a character from what they did. The opening questions are the gentlest, the last ones are for viewers who know their lore, and every answer comes with a short explanation.
30 of 50 questions with answers and explanations. Play the quiz
Q 01In Assassination Classroom, a blast destroys most of the Moon, leaving it permanently in which shape?
A crescent
A crescent is all that remains after 70 percent of the Moon is obliterated. The tentacled creature later named Koro-sensei claims responsibility and promises that Earth is next.
Q 02What maximum speed lets Assassination Classroom's Koro-sensei circle the globe and dodge almost any attack?
Mach 20
Mach 20 is his limit, fast enough that the world's governments failed to kill him before a class of students was handed the job.
Q 03What bounty does the Japanese government put on Koro-sensei's head in Assassination Classroom?
¥10 billion
¥10 billion is the opening offer. By the time Class 3-E is paid, the sum has grown to ¥30 billion: they keep enough for school and living costs, buy their old campus and hand the rest back.
Q 04Koro-sensei, the yellow tentacled teacher of Assassination Classroom, is most often likened to which sea creature?
An octopus
An octopus is the usual comparison, though he started out human: laboratory experiments mutated his body into its tentacled form.
Q 05Koro-sensei's name, coined by an Assassination Classroom student, puns on a Japanese word meaning what?
Unkillable
Unkillable is the meaning of korosenai, which the class blends with sensei, the word for teacher. The name is coined right after their first big attempt on his life fails.
Q 06Which Assassination Classroom student, freshly back from a suspension, becomes the first to wound Koro-sensei?
Karma Akabane
Karma Akabane manages it with a handshake, having taped shards of an anti-sensei knife to his palm. He is also the one Class 3-E student whose grades rival the school's very best.
Q 07In Assassination Classroom, what about Koro-sensei's body changes to give away his mood?
His skin color
His skin color shifts with his feelings, so the class can read their teacher like a mood ring. Nagisa keeps a running notebook of quirks like this in the hunt for a weak point.
Q 08Where is the run-down Class 3-E building of Assassination Classroom set, far from the main school campus?
On a mountain
On a mountain, well away from the main campus, the outcast class studies in a dilapidated old building. The chairman keeps them there, at their poorest, to spur on every other student.
Q 09Which Assassination Classroom student is exposed as an actress who joined Class 3-E to avenge her sister?
Kaede Kayano
Kaede Kayano is an assumed identity: she implanted tentacles in the back of her neck, believing Koro-sensei had killed her sister. She is also the student who gave him his name.
Q 10Which theme got the Assassination Classroom manga pulled from some Florida and Wisconsin school libraries?
Gun violence
Gun violence, above all violence aimed at a teacher, was the objection raised by the schools that removed it. In the story itself, Koro-sensei scolds his class for any plan that puts other people in danger.
Q 11Contact with which everyday substance makes the tentacles of Assassination Classroom's Koro-sensei swell up?
Water
Water bloats his tentacles, a weakness the class discovers at a swimming pool he built for them himself. Their big summer ambush starts by slowly flooding the chapel he is sitting in.
Q 12In Assassination Classroom, what do Class 3-E's weapons fire, specially made to work against Koro-sensei's body?
BB pellets
BB pellets made of a special material are standard issue, alongside rubber knives of the same stuff. Class 3-E packs them into a grenade and even embeds them in a baseball.
Q 13Which Japanese city hosts the Assassination Classroom school trip on which delinquents kidnap two Class 3-E girls?
Kyoto
Q 21Which Class 3-E bully makes Nagisa wear a grenade for the first big attack on Koro-sensei in Assassination Classroom?
Ryōma Terasaka
Ryōma Terasaka sets off the blast himself, but Koro-sensei shields Nagisa from it. Years later, Terasaka's tenacity lands him an apprenticeship with a leading politician.
Q 22Who taught Class 3-E before Koro-sensei in Assassination Classroom and, dying, asked him to watch over it?
Aguri Yukimura
Aguri Yukimura was assigned to observe him while he was still human and held in a laboratory, and she taught him compassion. She was fatally wounded by a trap meant for him as he broke out.
Q 23Which sadistic instructor in Assassination Classroom loses a knife duel to Nagisa and later poisons much of the class?
Kyoto is the destination, and the rescue succeeds thanks to a huge guidebook Koro-sensei wrote that even covers what to do when a classmate is taken hostage.
Q 14Which manga artist, also behind Neuro: Supernatural Detective and The Elusive Samurai, created Assassination Classroom?
Yusei Matsui
Yusei Matsui wrote and drew every chapter, having learned the trade as an assistant to the creator of Bobobo-bo Bo-bobo.
Q 15Which manga magazine, the home of One Piece and Naruto, first serialized Assassination Classroom?
Weekly Shōnen Jump
Weekly Shōnen Jump ran the series from July 2012 to March 2016. Shueisha's flagship is the best-selling manga magazine of all time.
Q 16In Assassination Classroom, what nickname does Class 3-E give its artificial-intelligence transfer student?
Ritsu
Ritsu is clipped from her Japanese title, Jiritsu Shikō Kotei Hōdai, the Autonomous Intelligence Fixed Artillery. She earns the nickname once Koro-sensei's upgrades give her a personality.
Q 17Which Assassination Classroom transfer student arrives claiming to be Koro-sensei's brother, with tentacles in his hair?
Itona Horibe
Itona Horibe got his tentacles from a cloaked scientist, not from family, and they nearly kill him. Once they are removed he joins the class for real and becomes its electronics expert.
Q 18Which professional hitwoman, hired as Class 3-E's language teacher in Assassination Classroom, later marries Karasuma?
Irina Jelavić
Irina Jelavić arrives planning to seduce and kill Koro-sensei, fails in front of the whole class, and stays on to teach. By the epilogue she is a government spy working under her husband.
Q 19In Assassination Classroom, the letter E in Class 3-E is mockingly said to stand for which word?
End
End is the word: pupils call it the End Class, a dumping ground for anyone whose grades or behavior fall short. The rest of the school is encouraged to look down on it.
Q 20In Assassination Classroom, Class 3-E hides a bomb inside which giant dessert, inspired by an egg surplus?
A caramel pudding
A caramel pudding is the bait, built on a giant scale by the whole class working together. Koro-sensei sees through the plan, disables the bomb and shares the dessert with his students.
Akira Takaoka
Akira Takaoka is fired on the spot after the duel, then returns for revenge at an island hotel. His hired killers quietly swap his deadly virus for a harmless one.
Q 24Which Assassination Classroom student, dropped from the baseball club, pitches a doctored ball at Koro-sensei?
Tomohito Sugino
Tomohito Sugino loses his spot in the club when he is sent down to Class 3-E. After Koro-sensei tells him to play to his own strengths, he goes on to turn professional.
Q 25Which chemistry-loving Assassination Classroom student hands Koro-sensei poison and asks him outright to drink it?
Manami Okuda
Manami Okuda is too honest to lie about what is in the bottles, so Koro-sensei teaches her that a good poisoner also needs a way with words. She grows up to be a medical researcher.
Q 26Which Class 3-E president in Assassination Classroom was demoted for taking a part-time job to support his family?
Yūma Isogai
Yūma Isogai waits tables to help his sick mother and two younger siblings, which the school's rules forbid. Classmates see him as the class heartthrob, even though he dresses in bargain clothes.
Q 27Karasuma, the stern PE teacher of Assassination Classroom, is really an agent of which arm of Japan's government?
Ministry of Defense
Ministry of Defense is his employer: he arrives to announce the government's deal with Koro-sensei and stays to train the class in assassination. By the epilogue he is a senior figure in Japanese intelligence.
Q 28In Assassination Classroom, how does Nagisa stun a tentacle-crazed classmate so Koro-sensei can remove her implants?
With a kiss
With a kiss, borrowing a technique from his language teacher's lessons. The shock holds her still just long enough for Koro-sensei to remove the tentacles before they can kill her.
Q 29Which school chairman in Assassination Classroom built the Class 3-E system and later teaches Class 3-A himself?
Gakuhō Asano
Gakuhō Asano began as a kind cram-school tutor and turned ruthless after bullies drove one of his first three pupils to his death. Koro-sensei admits his own teaching is modelled on the chairman's early style.
Q 30In Assassination Classroom, Class 3-E wins a resort trip to which island prefecture by beating Class 3-A in exams?
Okinawa
Okinawa is the prize, taken from the elite class in a bet on the exam results. Class 3-E turns the holiday into its most elaborate attempt on Koro-sensei's life.