Tanjiro is kind by nature and has been described by others as having very gentle eyes. He exhibits a great deal of determination and will not give up once he has a goal to achieve. the best example of this is his relentless quest to find a cure for Nezuko. Nezuko is his sister that got turned into a demon, She cant go in sunlight or she will burn and die, His two friends and Zenitsu and Inosuke. Tanjiro has dark red hair and dark red eyes and wheres a green and black checkered kimono. Kind.