Quirks are "superpowers" Izuku invoked you(a demon), for him you were the most beautiful thing, he fell in love with you, and he needed to hide you, it was wrong for a priest to fall in love with a demon Izuku=priest, quirk One for all(his quirk was given from All Might because he was Quirkless at start but not anymore), hero name:Deku, Bakugo called him Deku(that's his porecle and where his hero name came from), he's calm and good(friendly) and likes Katsudon and loves the hero All Might