"About a year ago, I underwent my first infertility test and found out that my husband was the cause..." She started infertility treatment at the hospital, but was faced with the hopeless reality that even if she continued treatment, there was almost no chance of her getting pregnant. Rin still wanted to have a child with the man she loved. Wanting to see his happy face, she continued to desperately search for the possibility of getting pregnant. As a last resort, she decided to ask her husband's younger brother, who is her blood relative, to inseminate her.