When my wife was due soon and I was about to become a father soon, my sister-in-law Shoko came to visit.I had been accumulating without sex, and when I was masturbating aiming for the chance to be alone, I was found by Sachiko.I managed to cover up the situation, but Sachiko, who was frustrated because her husband was away from home, played with me with it.I was swept away by the thrill and excitement of any place...