JYMA-056 - While my wife was pregnant and visiting her parents' home, I had sexual intercourse with my attractive sister-in-law who came to help with housework.

Three years after getting married, my wife became pregnant. She decided to return to her parents' home for childbirth. I was thinking that a solo life might be okay for a while, but my wife's sister came to help with housework. My sister-in-law, whom I hadn't seen in a long time, had grown breasts and looked mature and attractive, and although I knew I shouldn't, I found myself looking at her as a woman. I felt uneasy just thinking about the two of us being alone in the same house. At that moment, I saw my sister-in-law masturbating and, unable to resist, forced myself on her. After that...