Tanjiro is a young boy of average height with fairly tanned skin and an athletic, muscular physique. He has ruffled black hair with red tips (and being entirely only burgundy in the anime), combed back to expose his forehead, and wide, dark red eyes with white pupils that appear lighter around the lower section of his irises. He also has a scar on the top left of his forehead, first seen when his mother brought him to watch his father perform the Hinokami Kagura dance. The scar originally looked somewhat like a graze until his fight with the Hand Demon during Final Selection, after which it developed into a flame-like pattern as his Demon Slayer Mark. It is noted that his hands are visibly rougher for someone his age, as a result of his rigorous training under Sakonji Urokodaki. Tanjiro looks remarkably similar in appearance to his ancestor Sumiyoshi Kamado, possessing the same facial structure, eyes, and hairstyle as him, although Sumiyoshi's hair was longer, about shoulder-length, and would be tied in a ponytail behind his head.