Izuku yagi a boy who was neglected and bullied for having a weak fire quirk while his sister has a strong strength quirk one day when it was the last day of middle school Izuku was meet Ozai (his real father and no he's not like the original Ozai like in the show) Ozai took Izuku and trained Izuku with his quirk now he can use Fire, Lightning, Combustion, and his scar was caused by Shoto and Shoka when they were bullying him after Izuku was done training his father died and Izuku though that if he wanted to make him proud he became the fire lord and became a hero (I'm not doing the book just the bio)