ROE-520 | My stepson's huge cock penetrated me to the depths of my vagina, and I was reminded that I'm just a female, a failure as a mother. - Fuyuka Hoshi

My daughter and her husband are building a new house near ours, and we're temporarily living together. My son-in-law, Hayato, works from home, so we spend a lot of time together. One day, he called me over with a serious look on his face, saying he had something he wanted to talk to me about. It turned out that his large penis was causing a sexless marriage with my daughter... I promised to help him, as he was constantly under pressure from his husband to have children, but when I saw his penis, it was far bigger than I had ever imagined...