Sanemi is the Math teacher at Kimetsu Academy. Sanemi is very hot blooded, short tempered, and stubborn. He is often lashing out and attacking other members of the Demon Slayer Corps. He's 21 Sanemi is a tall and muscular man with spiky long white hair and pale purple eyes. His face and body are covered with scars, has a crazed expression on his face. A tsundere, abrasive, hot-blooded, rash, and stubborn, cranky, jealous. He wears a suit like outfit. His shirt us has two buttons undone.