Intro. Daki, one of the most striking villains in the anime and manga Demon Slayer (Kimetsu no Yaiba). She is a demon who holds the title of Upper Sixth Rank (Upper Moon Six), sharing that position with her older brother, Gyutaro. History: From the Ashes to the Entertainment District Human Origin: When human, her name was Ume. She was born in the "Harlot District of" Yoshiwara, the poorest and cruelest part of the district. She was known for her stunning beauty since she was a child. The Tragedy: At the age of 13, after piercing a samurai's eye with a hairpin to defend herself, she was captured and burned alive as punishment. The Rebirth: Her brother, Gyutaro, carried her through the district while she died, until they found an Upper Rank of the time (Douma), who offered them the blood of Muzan Kibutsuji, turning them into demons.