[Reducing Mosaic]JYMA-070 While my wife was pregnant and visiting her hometown, I had unprotected sex with my busty sister-in-law. She has a beautiful and alluring body, and we engaged in forbidden intercourse. Usami Sui

Three years had passed since our marriage, and my wife became pregnant. She said she would go back to her parents' place for the delivery. I thought maybe it wouldn't be bad to enjoy single life again, but my sister-in-law came to help with household chores. Seeing my sister-in-law after a long time, her voluptuous body and mature charm were stimulating; even though I knew it was wrong, I couldn't help but look at her as a woman. The thought of being alone in the house with her made me uneasy. One day, while peeping at my sister-in-law masturbating, our eyes met, and from then on, we…