Her step-son, who remarried, is a recluse and doesn't show up as if he has some grudge against Ruri. When she peeks into his room, she finds photos of Ruri and a video of her having an affair with her lover. Her son uses these to blackmail her, rapes her, and plays with her huge breasts. From then on, she is at his mercy and tortured like a sex slave in her husband's absence. Her son continues to torment Ruri with a sinister look.