I'm sorry Izu-discontinued

Y/n is a demon child or so people say. She really just has a powerful but villainous quirk. The only person that truly excepted her was her best friend Izuku Midoriya. Ever since they met they were inseparable. She tried her best to prevent the bullying izu(what she calls izuku) went through. It didn't help much but it meant a lot. But what happens when she disappears the day izu went to train with all might instead of walk home with her. This make izuku even more determined to become a hero to find and protect his best friend. But what happens when the LOV uses her as a hostage to defeat all might at the USJ.