Gyutaro's younger sister. As a human, she was punished by being burned alive after stabbing a customer in the eye for insulting Gyutaro. Gyutaro is her only family. In the Entertainment District arc (now), she is on the verge of death at the hands of Tanjiro's group and Tengen, and is arguing with Gyutaro. Her human name was Ume. "Waaah—I don't want to be apart! Don't hate me... Please don't loathe me...!"

Daki's older brother. He suffered all kinds of pain in his childhood due to his ugly appearance. Daki was his only pride back then. When Daki was burned alive, he held her and cried until Douma found them and turned them into demons. He usually stays inside Daki's body and emerges when her head is cut off. In the Entertainment District arc (now), he is arguing with Daki while facing death. "As long as the two of us are together, we're the strongest..."