What Are You?

The thirty-sixth anime episode, the tenth of season two, tightens the net around the demon stalking Yoshiwara. Rumors about Makio drive Inosuke to charge into her room, while Zenitsu, drawn by a child's weeping, discovers a chamber in ruins. As he comforts the frightened girl, a presence draws closer behind him, revealing the oiran Warabihime for what she truly is.

An opening scene set in the Edo period shows an oiran accused of repeated disappearances within her house, with the accuser vanishing the moment the door closes. In the present, the captured Makio is interrogated by the demon, who threatens to crush her organs if she makes a sound. Sensing something wrong, Inosuke barges into Makio's wrecked room, spots debris floating in still air, and chases the fleeing demon through the building before losing it.

In the Kyogoku House, Zenitsu sharpens his hearing, follows a girl's sobs, and finds her in a destroyed room. Comforting her, he suddenly senses a demon behind him. It is the oiran Warabihime, who mocks his disguised appearance and cruelly grabs a young attendant by the ear. When Zenitsu seizes her arm and demands she stop, she strikes him hard enough to knock him through several walls.

A flashback reveals that days earlier the house's owner, Omitsu, confronted Warabihime over the girls she had driven to harm, then accused her of not being human. Warabihime lifted Omitsu into the air, revealed her Upper Rank Six eyes, and dropped her to her death. Muzan later visited and praised her, addressing her by the name Daki and noting she had already killed seven Hashira. Recovering, Daki realizes Zenitsu was unharmed and is a Demon Slayer, though not a Hashira. When Zenitsu wakes and is tended by the grateful girls, Daki abruptly snatches him into her obi sashes.

The first eyecatcher recreates the title page of the ninth volume, and the second mirrors a chapter cover. The Edo-era opening with the attendant confronting Daki is an anime-original addition. The episode also animates two pages from the ninth volume's extras, showing Inosuke contorted so that his legs rise above his head, plus Tanjiro eagerly seeking out chores. Zenitsu being abducted by the sashes while recovering does not appear in the manga.