Yuko, raised as a refined lady and married to a successful executive currently stationed overseas, lives alone with her only son, Keiichi. However, Atsushi, Keiichi's so-called friend, presents himself as an exemplary student in public while hiding his truly despicable nature. He turns Yuko into a test subject for his aphrodisiac experiments, overwhelming her with intense sexual desire. Crushed under his dominance, Yuko is trained as a flesh slave●, forced to expose her body no matter how she feels. This story portrays an unconventional romance depicting a forbidden relationship where surface-level kindness intertwines with deep-seated darkness.