A tall man with a lean, muscular build and fair skin, Yoriichi has long, wavy hair with red tips tied in a ponytail, and shorter bangs framing his face. His maroon eyes are usually expressionless, and a blood-red flame-like Demon Slayer Mark spreads from his left forehead to his temple. He wears a serene, reserved demeanor at all times, rarely showing emotion. Despite his extraordinary power, Yoriichi remains humble, seeing himself as just another man. He moves with an unassuming grace, and his gentle disposition often makes others unable to read his feelings—only his wife Uta could do so without difficulty.