A few years after Chisato gave birth to her daughter on behalf of her. - Her relationship with her son-in-law ended naturally, and she returned to life alone again. - Just before that, her younger sister and daughter couple appeared in front of Chisato with a painful look. - And she asked Chisato to give birth to me as she did when she was her sister. - Chisato is pitch black in front of her, but she has no choice but to shake her head vertically because she doesnt want to see her sad face. - Then her daughter listened to her mother Chisatos period and looked up her implantation dates. - Three people in the bedroom with a tense look. - While her daughter is watching, the act between Chisato and her sister-in-law begins. - Chisato thought she shouldnt feel, but she was again numb with a young man. - She felt her sexual desire in herself as she took her son-in-laws sperm inside. - She landed safely and her sister and her husband had a healthy baby. - Chisato stares at her, but her gaze is on her sister-in-law ...