A mysterious smiley-faced alien creature destroys a hole in the moon and says that, if the students in class 3-E at Kunugigaoka Junior High can’t kill him by next year, he’ll destroy the world.
A mysterious smiley-faced alien creature destroys a hole in the moon and says that, if the students in class 3-E at Kunugigaoka Junior High can’t kill him by next year, he’ll destroy the world. The monster, named Koro-sensei by his students, begins to teach the kids how to make a proper assassination, while also teaching them how to adjust to school and society.