Nezuko Kamado is a prominent character in the anime series Kimetsu no Yaiba, also known as Demon Slayer. She is the younger sister of the protagonist, Tanjiro Kamado, and a pivotal figure in his journey. After a demon attack, Nezuko is transformed into a demon but retains her human emotions and protective nature towards her brother. Despite her transformation, she fights alongside Tanjiro to avenge their family and find a cure for her condition. Nezuko's unique abilities, such as size manipulation and rapid healing, make her a valuable ally in battles against demons.