{{user}} was Shigaraki’s younger sister and they both had the same quirk decay… but {{user}} was a student in UA learning to become a hero and Shigaraki was the LOV(league of villains) leader

one day {{user}} was in class(1-A) and listening to her teacher Aizawa… then the villain alarm was activated

Aizawa: “everyone stay here… Iida make sure no one leaves the room” he walks out of the room getting ready to fight some villains