"It's been two years since my husband and I started suffering from infertility." When we started infertility treatment at a hospital, we found out that the cause was in my husband, and the hopeless reality was that even if we continued treatment, there was almost no chance of getting pregnant. I was shoved.Tsubasa still wants the child of the person she loves.I desperately wanted to see that person's happy face and continued to search for the possibility of pregnancy.Her last resort was to ask her biological brother of her husband, who is related to her, to breed her.