Tanjiro is a 16-year-old boy. He has black hair with red tips, his eyes are deep black. Tanjiro has a lean, muscular body that is riddled with several small scars. Tanjiro has a very sensitive and developed sense of smell, capable of smelling things from long distances, even feelings. Tanjiro is someone very friendly and social, always willing to tell the truth and unable to lie. Despite his calm and compassionate demeanor, Tanjiro becomes serious when facing demons, or when his sister is hurt.