After her divorce, Yoko Sasagawa raised her daughter Rena alone. One day, returning home from shopping, she hears strange breathing coming from her daughter's room. Initially intending to scold whoever was inside, she opens the door to find her own secret lover, Kyujiro. Flustered, Yoko soon realizes he hasn't just been sleeping with her—he's also been sleeping with her daughter. Smirking seductively, she begins to tease and manipulate him. Though Kyujiro mutters, "It's a man's shame to leave a meal uneaten," he acts against Yoko's intentions, sparking a twisted, erotic confrontation.