He loves Kanna, his thoughtful wife twelve years his senior, whose cooking and care are flawless. Yet despite that love, their sex life has dwindled to once or twice a month because he can no longer stay hard through the act. Kanna reassures him that simply being together is enough, but her frustration is obvious. Longing to see her passionately satisfied again, he discovers the thrill of wife-sharing and begins planning to let other men fuck the devoted wife he adores while he watches.