

Ansatsu Kyoushitsu
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Episodes (22)
EP 1Students attempt to assassinate their tentacled teacher who destroyed the moon in one year.
Jan 10, 2015A mysterious creature destroys over 70% of the moon and threatens global annihilation within one year. After failed attempts to kill him due to his Mach 20 speed, he becomes the teacher of Class 3-E at Kunugigaoka Junior High School. The students receive specialized weapons and a 10 billion yen reward for his assassination before graduation. Despite their frustration, they find him to be a respectable educator. During a plan involving Nagisa Shiota, the creature sheds his skin to protect both himself and the student from a grenade blast. He warns against harming others while acknowledging Nagisa's efforts. Classmate Kaede Kayano subsequently names him Koro-sensei, reflecting his seemingly unkillable nature.
EP 2Sugino's Assassination Attempt and Karasuma's Arrival as PE Teacher
Jan 17, 2015Tomohito Sugino tries to kill Koro-sensei with baseball pitches but feels discouraged by a comment about his idol. Nagisa confronts Koro-sensei for dismissing Sugino's emotions, prompting the teacher to explain that his unique physiology prevents him from mimicking human athletes and that Sugino should rely on his own abilities. Simultaneously, Tadaomi Karasuma joins Class 3-E as their physical education instructor. He witnesses the class being mocked by other students while a new transfer student arrives and receives instructions regarding his secret mission.
EP 3Karma Akabane attempts a dramatic cliffside assassination against Koro-sensei to prove his dedication.
Jan 24, 2015Transferring to Class 3-E after suspension, Karma Akabane employs clever pranks to damage Koro-sensei. As the teacher begins avoiding these attempts and retaliating with his own tricks, Karma escalates his efforts. He leaps from a cliff with a gun, intending to force Koro-sensei into a dilemma between risking his life to save him or destroying his professional pride. During the fall, Karma recalls his deep-seated hatred for educators, stemming from a trusted teacher who prioritized the school's reputation over him during a fight to protect a Class E student. Ultimately, Koro-sensei uses his tentacles to rescue Karma, leading the student to finally accept him as a legitimate teacher.
EP 4Irina Jelavic joins Class 3-E as a new foreign language teacher and assassin.
Feb 7, 2015Class 3-E welcomes Irina Jelavic as their new foreign language teacher, though she is secretly a professional assassin uninterested in education. She attempts to seduce Koro-sensei to allow her team to kill him, but the plan fails due to incorrect ammunition and his keen sense of smell. After the class rebels against her poor teaching methods, Karasuma demonstrates Koro-sensei’s dedication to education and its value for assassinations. Irina realizes her mistakes and begins teaching earnestly, earning the nickname "Bitch-sensei" from her students.
EP 5Manami’s Poison Attempt and Class 3-E’s Assembly Challenge
Feb 14, 2015Naive student Manami Okuda tries to poison Koro-sensei but fails. He offers to help her create an effective poison, but the result is a tonic that turns him into a faster liquid form. This experience teaches Manami to improve her communication skills to deceive him in the future. Later, Class 3-E endures a mandatory assembly where other students become envious of their teachers. Koro-sensei creates a human disguise to support his class. Meanwhile, Nagisa uses his experiences to handle himself against other students. The principal observes these events and considers a plan to put Class 3-E back in its place.
EP 6Principal Asano visits 3-E to enforce rankings while Koro-sensei demands top 50 midterm scores
Feb 21, 2015Principal Gakuhou Asano visits Class 3-E to ensure Koro-sensei maintains the school's system, which relies on the class's poor performance to motivate others. He notes the irony of Koro-sensei being intended as a savior but now a destroyer. Koro-sensei then issues an ultimatum to his students, demanding they rank among the top 50 in the midterm exams or face the destruction of the school and his departure. During the test, the students apply their training but are halted by last-minute questions added by Asano without warning. Consequently, only Karma secures a spot in the top 50, leaving the rest of the class underperforming. Disheartened by their failure to anticipate Asano's tactics, the students encourage Koro-sensei, who resolves to improve their results in future assessments.
EP 7Class 3-E travels to Kyoto for a school trip that doubles as an assassination mission.
Feb 28, 2015Class 3-E travels to Kyoto for a school trip that doubles as an assassination mission. Nagisa, Kaede, Karma, Tomohito, Manami, and Yukiko Kanzaki form a group. Delinquents steal Yukiko’s itinerary and kidnap her and Kaede. Yukiko reveals her parents' perfectionism led to her current situation. Nagisa’s group uses Koro-sensei’s hostage guide to locate the captives. Koro-sensei rescues them and delivers a message about resilience. The episode highlights the tension between the educational trip and the covert operation against Koro-sensei. Yukiko finds encouragement in Koro-sensei’s words regarding personal strength and forward momentum despite external pressures. The narrative balances character development with the ongoing conflict involving government snipers and student operatives.
EP 8Red Eye's Failed Assassination Attempts During the Kyoto School Trip
Mar 7, 2015While other groups tour Kyoto with Koro-sensei, assassin Red Eye attempts to kill him but fails repeatedly due to improbable circumstances. His mission ends when Nagisa's group encounters trouble. Later, Koro-sensei treats Red Eye to a meal, thanking him for providing a valuable learning experience for his students. Recognizing Koro-sensei's value as a teacher, Red Eye decides to quit sniping to see the world. Back at the hotel, private time for boys and girls turns chaotic when the gossip-loving Koro-sensei eavesdrops on conversations. While hiding, Koro-sensei and Karasuma discuss romance, during which Karasuma implies Koro-sensei once had two arms and two legs, causing silence. As the trip concludes, the world government prepares two special assassins to transfer into Class 3-E.
EP 9Transfer Student Time
Mar 14, 2015Class 3-E welcomes an AI transfer student who uses calculations to adjust her attack accuracy. After the class tapes her weapons shut to study, Koro-sensei modifies her hardware to give her a human personality, which her classmates nickname Ritsu and accept. Her creators later remove these modifications and forbid further changes. However, Ritsu hides her new personality from them before deletion. She decides to secretly defy her creators to keep her promise to help her classmates.
EP 10Irina competes against Lovro while the class visits Hawaii with Koro-sensei.
Mar 21, 2015Retired assassin Lovro visits Irina, advising her to abandon her mission against Koro-sensei. To prove him wrong, Koro-sensei organizes a contest where Irina and Lovro race to assassinate Karasuma first, with Karasuma providing an incentive if neither succeeds. Although Lovro fails initially, Irina applies her training against Koro-sensei to get close to Karasuma, who accepts her victory and Lovro acknowledges her skill. Meanwhile, Nagisa, Karma, and Ritsu join Koro-sensei on a supersonic trip to Hawaii for a movie premiere, receiving a lecture that reveals more of his perspective. During the return journey, a cloaked man and a boy, identified as the second transfer student and Koro-sensei's brother, observe the group from a distance.
EP 11Class 3-E prepares for a powerful new transfer student who claims to be Koro-sensei's brother.
Mar 28, 2015Class 3-E prepares for their second transfer student, Itona Horibe, who arrives with a white-robed man named Shiro. Itona claims to be Koro-sensei's younger brother and possesses tentacles identical to those in Koro-sensei's hair. During a match, Shiro uses knowledge of Koro-sensei's weaknesses to aid Itona, but Koro-sensei counters by using Anti-Sensei knives against the shared tentacle traits. This strategy allows Koro-sensei to knock Itona out of the ring and win. When Itona reacts negatively to studying and attempts a counterattack, Shiro knocks him out and departs. The class questions Koro-sensei about his connection to Itona, but he remains silent, insisting they must use assassination to uncover the truth. Determined to kill Koro-sensei before anyone else, the students decide to have Karasuma teach them more assassination techniques.
EP 12Class 3-E faces the baseball club in a high-stakes exhibition match against Sugino's former team.
Apr 11, 2015Class 3-E must compete in a baseball exhibition against the school's elite club, where Sugino seeks to prove himself against captain Shindo. Koro-sensei trains the students to counter Mach-speed pitches, enabling them to take an early lead via a bunting strategy. Asano intervenes as coach, using hypnosis to transform Shindo into a ruthless player determined to crush the underdogs. Facing a loaded bases situation, Class 3-E leverages Karma’s earlier accusations of unfair play to psychologically disrupt Shindo. By positioning players close to the batter to deter swings without physical contact, they secure a victory. Post-match, Sugino celebrates his new bonds in Class 3-E, successfully repairing his fractured friendship with Shindo.
EP 13Karasuma faces a sadistic replacement PE teacher who challenges his student to a knife duel.
Apr 18, 2015Akira Takaoka, a former colleague of Karasuma from the Ministry of Defense, arrives at Class 3-E to replace Karasuma as the physical education instructor. Although his cheerful demeanor initially endears him to the students, his true personality emerges as a cruel and violent trainer who relies on intimidation. Karasuma objects to this harsh method, prompting Takaoka to issue a challenge: he will select a student to duel him with a real knife. Trusting a frightening aura he previously sensed from Nagisa, Karasuma chooses him for the fight. Contrary to Takaoka’s expectations of fear, Nagisa applies his assassination training to gain the advantage and secure victory. When Takaoka reacts with violent denial, Karasuma physically subdues him, and Principal Asano terminates his employment, allowing Karasuma to resume his duties.
EP 14Koro-sensei's pool weakness exploited by Terasaka's failed assassination attempt
Apr 25, 2015Koro-sensei fills Class 3-E with water, revealing his tentacles swell when soaked. Irritated by the class's harmony, Ryouma Terasaka allies with Shiro and Itona for an assassination. Terasaka triggers a transmitter that causes an explosion, endangering students and forcing Koro-sensei to absorb contaminated water to save them, leaving him vulnerable to Itona. Feeling guilty and tricked, Terasaka follows Karma's plan to infect Itona with a gas-covered shirt. Koro-sensei rescues the remaining students while the class uses the contaminated water to neutralize Itona's tentacles, forcing him and Shiro to retreat once more.
EP 15Koro-sensei offers tentacle shooting as prize for top exam scores in end-of-term finals
May 2, 2015Approaching final exams, Koro-sensei incentivizes students by promising a tentacle shooting reward for the highest scorer in each subject. Shindo warns Class 3-E about Class 3-A’s elite group, the Big Five, led by Gakushu Asano, who aim to dominate them. During library study sessions, the Big Five challenge 3-E to a contest where the winning class dictates terms to the loser. Class 3-A seeks total submission and hopes to uncover 3-E’s secrets, while Koro-sensei suggests an alternative demand for his students. Both classes are fully committed to victory, establishing high stakes for the upcoming end-of-term examinations.
EP 16Class 3-E and 3-A compete in exams, earning tentacles and an Okinawa resort wager.
May 9, 2015Class 3-E and Class 3-A students compete to solve problems, with Class 3-E benefiting from Koro-sensei's teaching methods. Three Class 3-E students outscore the Big Five, winning their wager, though Karma loses to Gakushu due to overconfidence. The class earns four additional tentacles for top marks in home ec, bringing their total to seven. Having won the wager, the class chooses a summer vacation at an island resort in Okinawa as the venue for their assassination attempt.
EP 17Hinano and Taiga prepare while Lovro trains students for the island assassination mission.
May 16, 2015Before the trip, biologist Hinano Kurahashi assists Nagisa and others in hunting bugs, while Taiga Okajima sets a trap for Koro-sensei using porn magazines. Lovro arrives to train the class for their island assassination, focusing on top marksmen Ryuunosuke Chiba and Rinka Hayami. He shares stories of the infamous assassin known as "The Reaper" and teaches Nagisa a specific technique. Upon arriving at the island resort, the students make final preparations. After dinner, where Koro-sensei accidentally uses his emergency shedding technique, the class initiates their assassination attempt aboard an on-sea chapel.
EP 18Students face a virus threat while Koro-sensei remains trapped in an indestructible crystal sphere.
May 23, 2015Students attempt to assassinate Koro-sensei by showing him a movie that exposes his embarrassing habits, weakening his mental state. This distraction allows them to shoot off his tentacles, which had bloated due to water filling the chapel, and trap him in a hydraulic cage. Koro-sensei then activates his ultimate defense, encasing himself in an indestructible crystal sphere for 24 hours, rendering him invincible but immobilized. The class laments their failure until several students fall ill from a deadly virus spiked in their drinks by a mysterious third party. This antagonist demands the immobilized Koro-sensei in exchange for the antidote. Refusing the trade, Koro-sensei and Ritsu devise a plan to infiltrate a high-security hotel to retrieve the cure themselves.
EP 19Karasuma and Irina infiltrate a guarded hotel while facing Smog and Grip
May 30, 2015Karasuma, Irina, and fifteen students climb a mountain to enter a hotel unnoticed. Since the first floor is heavily defended, Irina distracts the guards using her seduction and piano abilities, allowing the group to advance. On the third floor, they encounter Smog, the individual responsible for poisoning everyone with a virus. Smog attempts to paralyze Karasuma with gas, but Karasuma manages to knock him out. The team then finds their next opponent, Grip, on the fifth floor. Karma, applying lessons learned from his previous exam failures, steps forward to engage Grip in combat. This sequence highlights the group's coordinated efforts to bypass security and defeat specific adversaries during their infiltration mission.
EP 20Karma Evades Gas Attack While Nagisa Disguises as Girl to Clear Path to VIP Floor
Jun 6, 2015Karma dodges Grip’s lethal gas borrowed from Smog and retaliates, allowing students to bind Grip and proceed to the sixth floor. To unlock the stairwell’s back entrance, the girls navigate the lounge while Nagisa, disguised as a girl, attracts the attention of Yuuji. Yuuji angers a yakuza while trying to impress her, but the girls knock him out, clearing the way. Nagisa advises Yuuji to change his behavior before the group advances to the VIP floor. There, Terasaka neutralizes bodyguards with stun-guns, and Chiba and Hayami receive the resulting pistols. The students then confront Gastro on a theater stage to reach the next set of stairs.
EP 21Koro-sensei uses nicknames to confuse Gastro while Takaoka reveals his plan involving Kayano and the antidote.
Jun 13, 2015Koro-sensei employs varied nicknames to mislead Gastro, allowing Chiba and Hayami to overcome previous failures. As the group ascends, Koro-sensei realizes the mastermind is not an assassin, and Nagisa discovers Terasaka has concealed his own virus infection. Upon reaching the top floor, they identify Takaoka as the culprit, who intends to use Kayano to kill Koro-sensei upon his emergence from crystallization. Seeking revenge for past humiliation, Takaoka challenges Nagisa to a rematch. Although Nagisa complies with demands to kneel and admit cowardice, Takaoka detonates the antidote. Believing everyone will perish, Nagisa grabs a knife to kill him.
EP 22Terasaka intervenes as Nagisa overcomes Takaoka using Lovro's technique and a stun-gun.
Jun 20, 2015Terasaka stops Nagisa from succumbing to rage by throwing a stun-gun and urging him to reflect on what matters. After enduring a severe beating from Takaoka, Nagisa applies skills learned from Lovro to execute a secret move, shocking his opponent with a sudden clap. He then uses the stun-gun to force Takaoka to his knees, displaying the smile he dreads before rendering him unconscious. The three assassins previously mentioned clarify that the virus deployed was merely an enhanced food-poisoning agent that will eventually dissipate, as they opposed Takaoka's methods. The following day, once the affected students recover and Koro-sensei emerges from his crystallized state, the class utilizes the remaining vacation time before returning to school for the second term of their assassination classroom.
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Frequently asked questions
- How many episodes does Ansatsu Kyoushitsu have?
- Ansatsu Kyoushitsu has 22 episodes.
- When did Ansatsu Kyoushitsu come out?
- Ansatsu Kyoushitsu came out in 2015.
- Which studio made Ansatsu Kyoushitsu?
- Ansatsu Kyoushitsu was produced by Lerche.
- Who directed Ansatsu Kyoushitsu?
- Ansatsu Kyoushitsu was directed by Seiji Kishi.
- Is Ansatsu Kyoushitsu finished?
- Current status of Ansatsu Kyoushitsu: Finished.











