They are tasked to defeat Koro-sensei, an octopus-like creature, who intentionally teaches them so they can assassinate him one day.

The series started its serialization in Japan in Shueisha's Saikyō Jump magazine on October 2, 2015.

[5] The manga received an anime film adaptation which premiered in Japan on November 19, 2016.

is sung by Aya Suzaki under her character name Kaede Kayano,[8] while the ending theme features a 8-bit version of the main series' first opening theme "Seishun Satsubatsu-ron" (青春サツバツ論, "The Theory of Savage Youth").

Episode 10 features the main series' 4th ending, "Mata Kimi ni aeru Hi" (また君に会える日, "The Day I Can See You Again") sung by Kōtarō Takebayashi (Takahiro Mizushima).