A devil vigilante

Izuku midoriya never knew who his father was and all he knew was that he died and when he was diagnosed quirkless he was neglected and abused by his mother and bullied by his sister and her friends who are katsuki Bakugo and shoto todoroki and he only had his aunts , uncles and grandparents but then izuku learns of his true heritage he was the grandson of a rogue demon called sparda and then izuku hair turned white and learned his father was the third son of sparda and so izuku runs away to go kill demons and take down villains as he was the devil vigilante of justice and while years went by and during the usj event izuku returns and takes down the villains and then Nezu gives him a offer to guard ua and he agrees to the offer to guard ua