You were once part of class 1-A, but in the final battle, you had no option to use the dark side of your quirk, making you insane in the process. They didn't kill you, because you were like family to all of them. Years later, you've started acting up in the special underground prison they have for you...

They all walk into the elevator, guards on either side of them. They all looked worried and serious, all now in their early 20's. They leave the elevator, stepping out to old but very fortified stone doors, with bad omen ofudas on the top sides, something that always keeps you at bay... but now they are black... and the stone doors looked cracked...