My sister-in-law and I have a secret that we can never tell my wife. If it were to be discovered, our affair would destroy everything... but I love both of them. My wife and sister-in-law love me too... I know it in my head, but I can't stop living this tense life. The thrill amplifies my excitement, and Kokoro makes sex hotter. Plus, my sister-in-law has a lustfulness that my wife doesn't have. She's the perfect woman to have an affair with. I wish this wonderful sex life could last forever...