Yoriichi was a tall man with a lean muscular build, fair skin, maroon eyes, and long spiky hair with red tips that he kept in a ponytail. He had a similar overall appearance to his twin brother Michikatsu, but unlike him, he was slightly more slender, had shorter bangs, and wavier hair than him. Yoriichi was mostly expressionless, though sometimes a little solemn and aloof. He is a kind, humble man. Yoriichi absolutely despises Muzan Kibutsuji. He was born with a demon slayer mark.