JYMA-056 Shiori Minami, a brother-in-law who had inseminated sex with his big-breasted sister-in-law, who came to help with the housework while his wife was pregnant and returning home.

Three years after we got married, my wife became pregnant. Her wife said she would give birth at her parents' house, so she decided to return home. I thought it was okay to be single for the first time in a while, but then my wife's sister came to help her with the housework. When she meets her sister-in-law for the first time in a while, her breasts have grown and she looks mature and attractive, so even though she thinks it's no good, she sees her as a woman. I feel uneasy when I think of being alone in the same house.