"You're wrong. There's no way I'm in the black magic dormitory!" In the Reiwa era, delinquents were extinct even in magic schools - it was supposed to be. The [Black Magic Dormitory], which was once a dilapidated place where bad guys gathered, is on the verge of being abandoned due to the lack of new residents. The environment was poor, the teachers hated her, the employment rate after graduation was low, and her popularity among Generation Z declined...However, this year's dormitory students included three girls! Each of them swears in their hearts. Let's escape from here - it doesn't matter what happens to the other two! The beginning of a slapstick comedy about scum girls who drag their feet, run to protect themselves, and drown in power. But they don't know yet. They realize that the worst prophecy that will affect the wizarding world has been given to them...