Toonami Wiki
Toonami Wiki

Assassination Classroom is a Japanese anime series, based on the manga of the same name by Yusei Matsui. The anime adaptation was produced by studio Lerche and directed by Seiji Kishi. The first season premiered in Japan from January 9, 2015 to June 19, 2015 on Fuji TV. The second season premiered on Fuji TV from January 7, 2016 to June 30, 2016.

The series was licensed in North America by Funimation, who produced an English dub. The English dub of the first season aired on Adult Swim's Toonami programming block from August 29, 2020 to February 20, 2021.[1] The second season premiered on Toonami from January 8, 2022 to June 11, 2022.[2] The series is rated TV-14-DLSV on Adult Swim.


When a mysterious creature chops the moon down to a permanent crescent, the students of class 3-E of Kunugigaoka Middle School find themselves confronted with an enormous task: assassinate the creature responsible for the disaster before Earth suffers a similar fate. However, the monster, dubbed Koro-sensei (the indestructible teacher), is able to fly at speeds of up to Mach 20, which he demonstrates freely, leaving any attempt to subdue him in his extraterrestrial dust. Furthermore, the misfits of 3-E soon find that the strange, tentacled beast is more than just indomitable—he is the best teacher they have ever had!


Koro-sensei — The main protagonist and anti-hero of the series. He is the homeroom teacher of Class 3-E of Kunugigaoka Junior High School. He is initially thought to be the perpetrator of the explosion of the Moon, which has rendered it permanently in a crescent shape. Despite not having the intention to get killed, he offered to governments all over the world a chance to kill him under the condition that he is allowed to be the homeroom teacher of Class 3-E until the end of the year, when he will destroy the Earth by self-destructing unless he is killed. He is dedicated to his task as a teacher and imparting his knowledge of assassination to the students, despite knowing full well that he is their target. However, he is able to connect with each student individually, which is why all of his students respect him, despite knowing that he will destroy the planet in a year. He takes a form similar to an octopus with eight tentacles and his skin color changes depending on his mood.

Nagisa Shiota — One of the students in Class 3-E, Nagisa is seen as one of the weakest students in the class due to his small stature and mediocre physical abilities that are comparable to some of the girls in the class. He is able to draw closer whilst hiding his blood lust to make a surprise attack and is able to make his opponents falter through his blood lust alone. Outwardly friendly and polite to his friends and everyone, he hides a somewhat darker side of him as an assassin that is not noticeable during daily classes and is only revealed during training and assassination time. When engaged in battle, Nagisa becomes a brutal assassin who would throw away his life if it meant killing his target.

Kaede Kayano — One of the students in Class 3-E, she is one of Nagisa's close friends, being the one who is mostly seen with him. She has an apparent affinity for pudding, once attempting to assassinate Koro-sensei with a giant pudding with explosives inside. She experiences a slight inferiority complex when it comes to sex appeal, especially her bust size, as she usually gets flustered towards girls with large breasts. Kaede is the smallest student in Class 3-E and is even shorter than Nagisa and Manami.

Karma Akabane — One of the students in Class 3-E, he eventually becomes Nagisa's close friend. He is considered to be the strongest and smartest among the Class 3-E students. He is the first one to be able to inflict injuries on Koro-sensei during their first meeting. He was suspended from school prior to Koro-sensei's arrival by his class' homeroom teacher due to his extremely violent behavior. Unlike most students in the class who were placed there due to their low grades, Karma is one of the school's most gifted students as he is the only one able to match Gakushū in terms of test results and grades, but developed a rebellious attitude due to his previous teacher's betrayal after he severely wounded a top third-year student while saving a bullied student from Class 3-E.

Voice Cast[]



Color Season Episodes Toonami Premiere Toonami Finale
1 22 August 29, 2020 February 20, 2021
2 25 January 8, 2022 June 11, 2022

Broadcast History[]

  • Japan (Fuji TV) — January 9, 2015 - June 19, 2015; January 7, 2016 - June 30, 2016
  • United States (Adult Swim) — August 29, 2020[1] - February 20, 2021; January 8, 2022[2] - June 11, 2022

Toonami Broadcast History[]

The English dub of the first season premiered on Toonami on August 29, 2020 at 1:00 AM, replacing Ballmastrz: 9009.[1] It remained in that slot through October 24, 2020. After being pre-empted for a marathon of The Promised Neverland on October 31, 2020, the series moved to the 1:30 AM time slot on November 7, 2020 when Fire Force returned to the block and took over its former slot.[3] On January 9, 2021, the series moved to the 2:00 AM time slot when Attack on Titan returned.[4] It returned to the 1:00 AM time slot on February 13, 2021 so that Black Clover could take over the 2:00 AM time slot.[5] The first season completed its run on February 20, 2021 and was subsequently replaced in the lineup by Food Wars!.

The second season had a special 1-hour premiere on Toonami on January 8, 2022 from 12:30-1:00 AM with back-to-back episodes.[2] Two weeks later, on January 22, 2021, when One Piece returned to Toonami, the show was cut to one airing at 12:30 AM, only to be moved to 1:00 AM two weeks later after the premiere of Shenmue The Animation on February 5, 2022.[6][7] Due to shuffling of the lineup following the completion of Shenmue the Animation and Attack on Titan's runs, Assassination Classroom led the lineup at midnight for one week only on May 7, 2022.[8] The following week, May 14, 2022, it was moved to 12:30 AM due to the addition of Primal to the lineup at midnight.[9] The second season finale premiered on June 11, 2022, and the series was subsequently removed from the lineup.

  • Toonami (United States) — August 29, 2020[1] - February 20, 2021; January 8, 2022[2] - June 11, 2022

External Links[]


  1. 1.0 1.1 1.2 1.3 1.4 "Line up announcement! ". August 20, 2020. Retrieved on August 20, 2020. 
  2. 2.0 2.1 2.2 2.3 2.4 "Assassination Classroom Season 2 ". January 1, 2022. Retrieved on January 1, 2022. 
  3. "Bust out your planners – Toonami’s got some announcements to make! ". October 20, 2020. Retrieved on October 20, 2020. 
  4. "Witness the final season of an epic series. ". December 22, 2020. Retrieved on December 22, 2020. 
  5. "Black Clover is bringing back the magic! ". February 1, 2021. Retrieved on February 1, 2021. 
  6. "Toonami Line Up Update 1.22.2022 ". January 19, 2022. Retrieved on January 19, 2022. 
  7. "Shenmue: The Animation Season Premiere Tonight! ". February 5, 2022. Retrieved on February 5, 2022. 
  8. "Toonami Line Up Update 5.7.2022 ". April 28, 2022. Retrieved on April 29, 2022. 
  9. "Toonami Line Up Update 5.14.2022 ". April 28, 2022. Retrieved on April 29, 2022. 
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