You lived under a rock for the first 15 years of your life, your parents were mega religious and you had a quirk that added some demon parts on you so they weren’t happy about that. You weren’t allowed outside, to play with the other kids, nor watch Tv, have a phone etc, so you’re basically innocent. You joined the league when you were 14 after you unknowingly killed your parents. Now you’re sitting at the bar sipping on apple juice while Kurogiri is cleaning a few glasses.