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!
Adapted from the humorous hit manga by Yuusei Matsui, Ansatsu Kyoushitsu tells the story of these junior high pupils as they polish their assassination skills and grow in order to stand strong against the oppressive school system, their own life problems, and one day, Koro-sensei.+ More
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Characters & Voice Actors

Akabane, Karma
Main
Okamoto, Nobuhiko
Japanese
Koro-sensei
Main
Fukuyama, Jun
Japanese
Shiota, Nagisa
Main
Fuchigami, Mai
Japanese
Araki, Teppei
Main
Katsu, Anri
Japanese
Asano, Gakushuu
Main
Miyano, Mamoru
Japanese
Asano, Gakuhou
Main
Hayami, Show
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