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 masturbated for the chance to be alone, I was found by Sachiko-san. I managed to cover up the situation, but Sachiko-san, who was frustrated because her husband was away from home, used it as a story to play with me. I was swept away by the thrill and excitement of any place...
