Yuki was enjoying a long-awaited family trip with her husband, who had just returned from a work assignment, and their son. Upon arriving at the inn, she seized the chance to sneak away with her husband while their son was in the room. Though their marriage had matured over time, her sensitivity remained as strong as ever, and she was swept away by the intense pleasure. Amid the warmth of family togetherness, their erotic union marked the beginning of something new.