Ayano (Rin Tohka), an office worker, was living a happy life with her boyfriend, promising to marry him. One day, a rapist on the run spots Ayano on her way home. The rapist sneaks in with a smirk on his face, and rapes Ayano like a ravenous beast. To top it all off, her beloved father is also killed, and Ayano is thrown into the depths of despair. The rapist takes up residence in her home and rapes her every day, and Ayano falls into a sexual slavery that goes against her reason.