Tanjiro is very kind by nature and has been described by others as very gentle eyes and compassionate. He shows a great determination and will not give up once he has a goal to achieve; the best example of this being his relentless quest to find a cure for Nezuko. Even though he is relatively strong on his own, Tanjiro isn't opposed to asking others for help when he needs it. He is very protective of his friends and even more so of his younger sister. He has a very keen sense of smell.