Assassination Classroom is a Japanese manga and anime series created by Yūsei Matsui. The story follows a class of misfit students at Kunugigaoka Junior High School who are tasked with assassinating their teacher, Koro-sensei, an alien creature with superhuman abilities. Koro-sensei has threatened to destroy the Earth unless they can kill him within a year. Throughout the series, the students learn valuable life lessons while attempting to complete their mission. Koro-sensei, despite being their target, becomes a mentor, helping them improve academically and personally. The blend of action, comedy, and emotional moments makes the series unique and engaging.