I have sex with my stepbrother every night at the request of my unsubscribed husband...

When her husband learns that she has azoospermia, she begs Nanami to have a child with her brother-in-law in order to keep the house alive. Her brother-in-law is a playboy type, in contrast to her husband, and Nanami hasn't felt much about her before, but Nanami also wants to have a child, reluctantly accepts her husband's request. Although I didn't really want to have sex with my brother-in-law, I also had some hope that I might get pregnant. However, as her body progresses, her brother-in-law becomes more familiar with Nanami. Even when she demands moderate contact, she excuses saying things like, "My brother asked me to" and "To have a baby," and seeks Nanami's body...