[ADN-437] While my wife was giving birth at home, my wife's younger sister stayed at home and treated me sexually so that I wouldn't have an affair with another woman. Hikari Ninomiya (Censored)

A wife who returned to her parents' home for a homecoming birth. I was living alone for the first time in a long time, and I was going crazy. My wife's sister came to my house whether I knew such a thing or not. "Brother-in-law...Aren't you trying to cheat?"When I couldn't hide my upset from my sister who suddenly followed the core..."I'll handle it for you so that your brother-in-law doesn't cheat..." hand….