RBD-940 Woman Made Into A Cum Dumpster, Slave Castle Side Story

Mariko (Hazuki), the only daughter of a wealthy family, has been spotted by Chie (Kobayakawa), who is looking for a woman who can become a human urinal at the request of a sadistic madam. She is kidnapped and confined by the scheme of Chie who infiltrated as a servant, is violated by a masked man, and is trained to a human toilet while Chie is made to serve as a lesbian ....