
Tucked in the mountains near the elite Kunugigaoka Middle School lies a small derelict building that houses the delinquents and dropouts of Class 3-E. Looked down upon by their peers, the students in this class appear to have little hope in advancing their academic careers. That is, until the national government tasks them with eliminating the greatest threat to their planet: their new teacher. Having already destroyed the moon, the octopus-like professor—dubbed "Koro-sensei"—has now threatene...
A super‑fast alien teacher forces a class of outcasts to become assassins to save the world.
In the shadow of the prestigious Kunugigaoka Middle School, Class 3‑E languishes in a rundown annex, populated by misfits deemed academic dead‑ends. Their bleak routine takes a wild turn when the government assigns them an impossible mission: assassinate their new teacher, an otherworldly being with a grin as wide as his tentacle‑like body. Koro‑sensei, the octopus‑shaped educator who once blew up the moon, now threatens to obliterate Earth unless his students can end his life before March 31. Against a backdrop of absurdly high‑speed combat and impossible resilience, Koro‑sensei becomes the most unorthodox mentor imaginable. He trains the ragtag pupils in both textbook subjects and lethal tactics, coaxing hidden potential from each underachiever. As they juggle chemistry equations with sniper drills, the students discover that the key to saving the planet lies not just in finding his physical weakness, but in mastering the confidence and camaraderie Koro‑sensei instills. Their frantic scramble to outwit a teacher who can dodge bullets at Mach 20 becomes a heartfelt lesson in perseverance, friendship, and the strange beauty of learning from the most unlikely source.
**Koro‑sensei’s teaching methods defy expectations**
He turns assassination drills into physics lessons, so each episode feels like a quirky classroom experiment that actually teaches you something about strategy and teamwork.
**Emotional stakes rise with every student backstory**
Episodes like “Nagisa’s Confession” and “Irina’s Redemption” reveal why each outcast is in Class 3‑E, turning the kill‑or‑save premise into a heartfelt coming‑of‑age saga.
**The “Mach‑20” chase scenes blend humor and tension**
When the class attempts to trap Koro‑sensei with a giant net or a makeshift laser, the action is choreographed with slapstick timing that keeps the suspense fresh.
**A ticking‑clock narrative drives relentless momentum**
The looming March deadline forces the students to evolve quickly, making each lesson feel like a high‑stakes mission rather than filler schoolwork.
**Lerche’s vibrant art style amplifies the absurdity**
Bright color palettes and exaggerated expressions highlight the series’ blend of comedy and drama, especially in moments like the “Octopus‑Balloon” graduation.
Best for: Viewers who love a mix of comedy, action, and character growth, and don’t mind a sci‑fi premise wrapped in a high‑school setting.
Both center on an unconventional, larger-than-life teacher who transforms a class of outcasts through unorthodox methods, blending absurd comedy with genuine emotional growth.
Shares the underdog classroom dynamic where students train under a charismatic mentor to overcome impossible odds, balancing high-stakes action with heartfelt character development.
Features a protagonist who uses strategic intellect to 'conquer' difficult targets in a school setting, mixing humor, meta-commentary, and surprising emotional depth.
Explores a marginalized class in a rigid school hierarchy where students must outthink the system, emphasizing psychological tactics over brute force.
Matches the tonal whiplash of absurd comedy suddenly pivoting to sincere drama, with a lovable ensemble cast and a mentor figure who hides wisdom behind foolishness.
Spy × Family
moderateBlends high-concept premise (assassination/spy mission) with warm found-family dynamics and school-life comedy, where deception masks genuine care.
A teacher’s final lesson: you were never disposable.
Assassination Classroom transforms its absurd premise—middle schoolers tasked with killing their tentacled, Mach-20 teacher before he destroys Earth—into a profound meditation on education, marginalization, and the meaning of a life well-lived. The series’ central tension lies in the paradox of Koro-sensei: he is simultaneously the students’ target and their greatest advocate. In Episode 7, when he tailors individualized curricula for each student during a single study session, the show crystallizes its thesis: true education is not standardization but the radical act of seeing a person’s specific shape and helping them grow into it. Class 3-E’s physical exile to the mountain campus mirrors their social abandonment by a system that equates worth with test scores. Their assassination attempts become the vehicle for agency; each failed attempt is a lesson in physics, chemistry, teamwork, and self-knowledge. Nagisa’s evolution from passive observer to the one who delivers the final strike (Episode 22) reframes assassination as an act of mercy and gratitude rather than violence. The series refuses to let its comedy undercut its emotional stakes—the tonal whiplash between a tentacle monster wearing a party hat and a student confronting an abusive parent is deliberate, asserting that joy and trauma coexist in the classroom. Ultimately, the graduation ceremony’s quiet devastation reveals the show’s heart: the deadline was never about saving the world, but about giving these discarded children a teacher who believed they were worth the time.
A class of middle school misfits tries to kill their superpowered, yellow octopus teacher before he destroys Earth, blending high-energy action comedy with genuine character growth and surprisingly heartfelt mentorship. Expect cartoonish violence, some heavy emotional backstories, and a tone that balances absurd humor with sincere messages about self-worth and second chances.
Assassination Classroom has 22 episodes.
Assassination Classroom is currently finished airing.
Assassination Classroom was produced by Lerche.
Assassination Classroom aired Jan 10, 2015 to Jun 20, 2015.
Assassination Classroom is based on a Manga.
A teacher’s final lesson: you were never disposable. Core themes include: Education as Empowerment, Marginalization and Self-Worth, Mentorship and Legacy, Agency Through Unconventional Means, The Paradox of Violence as Care.
A class of middle school misfits tries to kill their superpowered, yellow octopus teacher before he destroys Earth, blending high-energy action comedy with genuine character growth and surprisingly heartfelt mentorship. Expect cartoonish violence, some heavy emotional backstories, and a tone that balances absurd humor with sincere messages about self-worth and second chances.
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PV English dub version
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Akabane, Karma
Main
CV: Okamoto, Nobuhiko

Koro-sensei
Main
CV: Fukuyama, Jun

Shiota, Nagisa
Main
CV: Fuchigami, Mai

Araki, Teppei
Supporting
CV: Katsu, Anri

Asano, Gakushuu
Supporting
CV: Miyano, Mamoru

Asano, Gakuhou
Supporting
CV: Hayami, Show

Chiba, Ryuunosuke
Supporting
CV: Majima, Junji
Furyou A
Supporting
CV: Tokumoto, Eiichirou

Fuwa, Yuzuki
Supporting
CV: Ueda, Kana

Gastro
Supporting
CV: Koyasu, Takehito

Grip
Supporting
CV: Murase, Katsuki

Hara, Sumire
Supporting
CV: Hino, Miho

Hashimoto, Kyouhei
Supporting
CV: Kawaguchi, Sho

Hayami, Rinka
Supporting
CV: Kawaragi, Shiho

Hayasaka, Ritsu
Supporting
CV: Fujita, Saki

Hazama, Kirara
Supporting
CV: Saito, Fuuko

Horibe, Itona
Supporting
CV: Ogata, Megumi

Isogai, Yuuma
Supporting
CV: Oosaka, Ryouta

Jelavić, Irina
Supporting
CV: Itou, Shizuka

Kanzaki, Yukiko
Supporting
CV: Satou, Satomi

Karasuma, Tadaomi
Supporting
CV: Sugita, Tomokazu

Kataoka, Megu
Supporting
CV: Matsuura, Chie

Kayano, Kaede
Supporting
CV: Suzaki, Aya

Kimura, Masayoshi
Supporting
CV: Kawabe, Shunsuke
22 episodes · 2 cours
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2015 SummerRanked higher than 97% of all anime on AniTome (out of 19,551)
More popular than 100% of all anime