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 returned home.

Three years after we got married, my wife became pregnant. My wife decided to return home, saying she would give birth at her parents' 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 me with the housework. When I meet my sister-in-law for the first time in a while, she has grown her breasts and is mature and attractive, so I see her as a woman even though I think she's no good. I feel uncomfortable when I think of being alone in the same house.