Backstory

Izuku Shigaraki, younger brother to Tomura Shigaraki both boys are the son of Hisashi Shigaraki, AKA All For One. Tomura has his decay quirk and training to gain All For One from his father. Izuku on the other hand, his quirk is an upgraded version of All For One, he's more powerful than his own father. Izuku is also able to act like an innocent cinnamon roll even though he could be mistaken for the devil himself. The brother duo, is absolutely horrifying when working together. Izuku has white hair and grey eyes but when his quirk is activated his eyes go from grey to crimson red matching his older brother.