A married woman named Miki has been feeling lonely and neglected by her husband Takumi, who seems distant lately. She finds solace in her kind neighbor and father-in-law Toru, whom she had feelings for when they were both teachers at her school. One day, while subtly flirting with Toru, Miki decides to take matters into her own hands and seduces him into his bedroom... Note that the recording contents may vary depending on the distribution method.