Ansatsu Kyoushitsu (en) is about a class of misfit students tasked with assassinating their alien teacher, Koro-sensei, before he destroys Earth. Koro-sensei is a cheerful, tentacled creature with incredible speed and a mysterious past. The students, from Class 3-E of Kunugigaoka Junior High, must figure out creative and tactical ways to kill him while also improving their grades and dealing with personal struggles. Readers enjoy the blend of action, comedy, and heartfelt moments, as the story explores themes of redemption, teamwork, and the value of education. Despite the assassination premise, Koro-sensei becomes a beloved mentor who genuinely cares for his students, making the journey emotional and rewarding.