The Yamamotos are a happily married couple living a blissful life. On the surface, they seem like an ordinary couple... but their nightly life is that of a 'master' and a 'slave'. Wife Miyako feels her husband's love through humiliating sex acts and believes she can do anything for him. One day, Miyako received an unexpected proposal from her husband: "Let me test if your love for me is genuine! Can you promise not to orgasm with any other man?"
