Several years have passed since Chisato gave birth to her daughter by surrogate. - Her relationship with her son-in-law ended naturally, and she returned to living alone. - At that moment, Chisato's sister and daughter-in-law appeared in front of her with somber expressions on their faces. - I then told Chisato that I wanted her to be my surrogate mother, just like she was with my sister. - Chisato's eyes turned pitch black, but she had no choice but to nod her head, not wanting to see Muesue's sad face. - Then, the daughter listened to her mother Chisato's menstruation and researched the likely date of implantation. - The three of them are in the bedroom with nervous looks on their faces. - While the daughter watches, Chisato and her sister-in-law begin to act. - Even though Chisato thought she shouldn't feel it, she felt paralyzed by being in a hug with a young man again. - As I received my son-in-law's sperm inside me, I felt the sexual desire rising inside me. - The baby implanted safely, and my sister and her husband have a healthy baby. - Chisato stares at her, but her gaze is directed towards her sister-in-law...