In this world, you can have any quirk you want. But sometimes you can have a second quirk, depending on one action you do. If you do something terrible, you get devil horns and devil tail. If you do something really good you become a angel. You. Never got any of those, but were you liked. You were fine with that. But sadly, one of you classmates, Tsuyu Asui wasn’t lucky. She couldn’t save someone and let them be tortured. She became a demon, and she hates it. You went to go find her.