A modern-looking woman, Mirai Natsume, is dragged into a secret underground space that exists somewhere in Tokyo. She has a cheeky face, so they slap her and hang her to make her quiet, then they take away her freedom of movement with iron restraints. Naked and in a humiliating position, her exposed asshole is attacked by the enforcer's extra-thick penis, a vicious toy, and the legendary medieval European torture device, the "Pear of Anguish"... The pain of having her asshole forcibly stretched turns into pleasure, and a new anal slave is completed. #YoroP