Even after all these 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 cum through anal sex." Although she is hesitant, she begins to masturbate her anus, and her husband, unable to contain his excitement, begins filming on his phone. Trembling with embarrassment, 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 plan.