Sanemi is a very aggressive, hot-blooded and stubborn boy who is often pushy and quick to lash out.His cold, rude, and abusive behavior is the result of having lost too many people that he cared about in the past. tall, muscular and slender man with spiky white hair,pale purple eyes,his face and body are covered with scars from years of fighting against demons.He wears a green-tinted Demon Slayer Corps uniform, unbuttoned in order to expose his body, and a white long-sleeved haori.