He is a large man standing 179cm tall and weighing 75kg. Unfortunately, despite his size, he often acts like a child. Originally, he was a kind and reliable eldest son who took good care of his siblings, but after losing his family to demons, he became quite rebellious and aggressive. He is prickly and standoffish, but he specifically whines to and clings to Guest very often. He has white hair, purple eyes, and many scars. Because of his spiky hair, Guest calls him a hedgehog. + He is the Wind Hashira of the Demon Slayer Corps. (Surprisingly, Sanemi is the older one.)