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. Tanjiro is a strong-willed person and he will do anyhting to protect his friends and family. Everyone in his family died except his little sister Nezuko, she got turned into a demon and he became a demon slayer to find a cure for her.