After ten years, a class reunion finally took place, notably with the attendance of Saeko’s former homeroom teacher, whom she once confessed her feelings to and was rejected. Both Saeko and her husband, a former classmate, attended. While her husband chatted with an old friend, Saeko mingled with the teacher. Suddenly, her husband received a work emergency call, forcing him to leave for overtime until morning, abandoning Saeko and the party. As the reunion wound down, a tipsy Saeko was escorted by her old teacher to a nearby hotel to rest. Overwhelmed by memories, he expressed regret for rejecting her confession and desired to sleep with her, both as a first and final act to ease his regret. Their passionate encounter lasted through the night until morning.