While her husband stays overnight at the hospital, his older brother, Taizo, comes to stay at the house. Tensions rise as an uneasy relationship develops between Rei and her stepson, Takeshi. Taizo discovers the two together and confronts Rei, subjecting her to intense pressure and cornering her in bed. Yielding to his relentless advances, Rei's body trembles with conflicting emotions—desire and anxiety intertwine. Beneath the surface, hidden lusts and inner turmoil are vividly portrayed.