[Reducing Mosaic]JYMA-081 While my wife was pregnant and I was visiting my hometown, I had unprotected sex with my sister-in-law who has large brown breasts. I engaged in forbidden intercourse with my beautiful and lewd sister-in-law. Rena Fushimi

Five years had passed since our marriage, and my wife became pregnant. She said she would go back to her parents' place to give birth. I thought maybe I could enjoy some single life again, but my sister-in-law came to help with the chores. My sister-in-law, whom I hadn't seen in a while, was beautiful and exuded mature charm that was stimulating. Despite knowing it was wrong, I couldn't help but see her as a woman. The thought of being alone with her in the same house made me uneasy. One time, when I was peeping at my sister-in-law masturbating, our eyes met, and since then, we have been involved in taboo…