RIEKO learns from television that her estranged son Yuta has been arrested for nonconsensual sexual assault. Shocked but unsurprised, she remembers discovering his dangerous fixation three years earlier when she caught him bringing a woman home and attempting to assault her. Knowing molestation, rape, and child sexual abuse are unforgivable, Rieko nevertheless made the disastrous choice to offer her own body in hopes of stopping him from harming other people. The story looks back at the abusive sexual arrangement that existed before they severed ties.