After many attempts to get her to marry him, my happy life with Yuu changed drastically because of my junior colleague, Koichi. During my lunch break at work, Koichi and I were talking about women, and he boasted that married women were the easiest to seduce. When my wife, Yuu, said that it was easy, I got angry and blurted out that he should try to woo her. A few days later, I invited Koichi to my house and made up an excuse to be alone with my wife for three hours. After that time had passed, I hurried home, completely believing the two of them when they said nothing had happened...