Even after many years, her husband continues to desire his wife, Reiko, as if they were newlyweds. She feels joy and happiness from this, but one day her husband says to her, "I want to see you cumming through anal sex." She is confused, but when she starts masturbating with her anus, her husband, unable to contain his excitement, starts filming with his cell phone. She is trembling with embarrassment, but her body throbs violently from the stimulation she normally doesn't experience. Not satisfied with this alone, her husband brings his junior colleague, Miyazaki, home to carry out a certain plan.