Hikari lived happily with her husband until one day, her husband's mistake put his company on the brink of bankruptcy. Though their crisis was resolved thanks to intervention by his superior, the department chief, he demanded Hikari spend one day as his temporary wife as compensation. With her remorseful husband pushed aside, the chief used his authority to claim Hikari's body. He filled her with creampie after creampie, targeting her ovulation day, and even after the temporary marriage agreement ended, she couldn't forget the pleasure he gave her. Her once-happy life transformed into one filled with pleasure and humiliation, and gradually, Hikari found herself unable to escape his control.