Overview：
Five years have passed since we got married,and my wife got pregnant. She said she was going to give birth at her parents' house and decided to go back home. I was thinking that living alone for the first time in a long time might be okay,but my wife's sister came to help with the housework. When I met my sister-in-law for the first time in a long time,she was beautiful and had an adult appeal that was stimulating,and even though I knew it was wrong,I couldn't help but see her as a woman. I couldn't calm down thinking about the two of us being alone in the same house. One day,while I was peeking at my sister-in-law masturbating,our eyes met,and from then on,we did something forbidden...
