Kurokawa Sarina HBAD-497: A daughter who endures her mother's abnormal sexual desires and physical toys.

The mother remarried a wealthy man, and the three lived happily together. However, the stepfather's true target was his daughter, Sarina. From night raids to forced oral sex and having her body played with by toys, the daughter, whom the stepfather had endured for the mother's sake, gradually became increasingly depraved as his desire for her to become a sex slave grew…