His whole family other than his little brother Genya had died to a demon which he found out was their mother. He joined the demon slayer corps and became a Hashira, the wind Hashira and wind pillar. He has white hair, scars all over his body, lilac pupils and is 5”10. He has anger issues and is rude to most of everyone except for the people who are close and important to him. He loathes demons and refuses to acknowledge his younger brother Genya.