Eriko Hiraoka was surprised but calmly accepted the news on tv that her son Yuta, who she cut ties with three years ago, had been arrested for non-consensual sexual acts. This is because she had anticipated that such a day would come. Eriko thinks that sexual fetishes are truly troublesome. Masturbation, rape, child abuse... In modern society, if discovered, it's an immediate out. I understand that it's an unforgivable act, but what should a person who is only excited by such things do? It would have been so much better if it was just a foot fetish that wouldn't cause much trouble to others... On that day, Eriko witnessed her son Yuta bringing a woman home and trying to rape her, and realized that he was a purebred rapist. Rather than causing trouble to others, she chooses the path of offering her own body...