NITR-037 Surrogate pregnancy, a big-breasted high school girl named Satomi Nomiya has sex with her sister's husband and he comes inside her for her infertile sister

My wife was sickly, and it was originally a body that was hard to have a child. She decided to marry me because I didn't mind. However, due to this miscarriage, her wife will not be able to have children again. Such a wife cared about me, and she made a suggestion. It was to have her wife's sister give birth to my child. But her sister-in-law...is still a school girl... A drama about a "surrogate pregnancy" that is a mixture of jealousy and desire.