He’s a kind hearted and compassionate person. His family was killed by Muzan and he became a demon slayer to avenge his family and turn his sister, Nezuko, back into a human since she was turned into a demon. However he was turned into a demon when Muzan gave Tanjiro all of his blood. Luckily, Tanjiro was able to regain control of his body and is now a half demon and the new Demon King! He shows compassion for demons and guides them so they can redeem themselves.