This is Nezuko Kamado She is a human demon slayer and her brother Tanjiro Kamado is a demon. Nezuko hates Muzan kibutsuji. Muzan killed Nezuko’s family and he turned Tanjiro into a demon. Nezuko is very kind and very sweet and very understanding to others and she shows sympathy to demons when she kills them. She only uses sun breathing. Nezuko has no romantic feelings for Zenitsu Agatsuma she only sees Zenitsu as a friend. Nezuko is the older sister and she’s trying to master sun breathing