Nozomi lives a happy life married to a man working at a top-tier company—until her past comes back to destroy everything. Her ex-boyfriend, a delinquent with an insatiable sexual appetite, resurfaces and blackmails her, threatening to expose the secret that she was once his personal, depraved cumdump. He begins repeatedly breaking into her home, forcing her into sex even while her husband is present. Unable to resist, her pent-up body betrays her, convulsing in long-forgotten pleasure as she reaches climax. This experience reignites her inner nymphomaniac, and the delinquent man continues his unpredictable invasions, resuming his creampie-filled sex slave training, turning her once again into his obedient, fleshly toilet.