Taimanin Asagi: Toraware no Niku Ningyou 1

Tokyo Kingdom is an abandoned island floating in Tokyo Bay.
Asagi infiltrates Tokyo Kingdom in pursuit of those who have taken refuge there and are allied with the demons.

There, she finds a trap set by Oboro, who harbors hatred and an obsession for Asagi.

Asagi, Sakura, and Murasaki are captured, and eventually become sex puppets for the demons.