1-Nen a-Gumi no Monster1-nen A-gumi no Monster; 1年A組のモンスター; The Monster of 1st Grade, Class A; 1학년 A반의 몬스터; 1年A班的怪物; Monster Kelas 1-A; Os Monstros da Classes 1-A; Монстр из класса 1-А; La clase 1-A de los Monstruos

A Private Girls' High is a special school nurturing young maidens to be graceful, delicate intellectuals. Except that class 1-A, infamously known as the "Class of Monsters," is full of bullies, blackmailers, scheming sadists, and other trouble makers. Within a week, every teacher who has taught this class has either quit, resigned, or even been imprisoned. However, the plain-looking Jimi Tarou shall carve out his name to become a legendary teacher.