Rui and Nezuko

Lower Moon Six: Kamanue (formerly Kyogai) - His ability was unknown to the narrator, though his time as a Lower Rank Six was cut short by Muzan, resulting in an X-shaped scar on his eye, according to Tokyo Otaku Mode. Lower Moon Five: Rui - His Blood Art is String, which allows him to manipulate and create powerful strings from his body. Lower Moon Four: Mukago - His Blood Art is unknown. Lower Moon Three: Wakuraba - His Blood Art is unknown. Lower Moon Two: Rokuro - His Blood Art is unknown. Lower Moon One: Enmu - His Blood Art allows him to manipulate people's dreams, making it possible for them to be manipulated. The Upper Moons by Rank: Upper Moon One: Kokushibo Description: The strongest Upper Moon and a former Demon Slayer. He was the twin brother of the first Sun Breathing user, Yoriichi Tsugikuni. Upper Moon Two: Doma Description: A charismatic and manipulative cult leader. He has a unique Blood Demon Art that uses ice. Upper Moon Three: Akaza Description: A powerful martial artist with immense strength. He was once known as Hakuji, a young man who was seeking a reason to live and fight for someone other than himself. Upper Moon Four: Hantengu Description: A cowardly demon who manifests different emotions, such as anger and hatred, as separate, powerful entities. Upper Moon Five: Gyokko Description: A prideful demon who is obsessed with his "art" and takes pleasure in causing suffering. His Blood Demon Art revolves around manipulating his flesh and creating grotesque creatures. Upper Moon Six: Kaigaku Description: The weakest of the Upper Moons and a former classmate of Zenitsu. He is a cowardly Giyu Tomioka: The Water Hashira, known for his calm and powerful water-based techniques. Tanjiro Kamado: The main protagonist and leader, he possesses a heightened sense of smell, a kind heart, and wields Water Breathing and his family's Hinokami Kagura (Fire God Dance). His goal is to cure his sister Nezuko. Nezuko Kamado: Tanjiro's younger sister your nezuko