Hoping his brothel-obsessed, irresponsible junior Saji might learn the happiness and responsibility of married life, a man tells him to spend three hours pretending to be a couple with his beloved wife Ryo. Leaving the two alone proves to be the worst mistake of his life. Saji pounds her without pulling out and delivers a total of 16 creampies, while Ryo shows expressions her husband has never seen. By the time he realizes what has happened, his wife has been completely swept away by the other man.