Mio, who had been cherished for years in Professor Sugura's economics seminar, climbed the ranks to become an associate professor thanks to his guidance. Around that time, Sugura's wife passed away, and at her funeral, she met and married his son, Yuuji. She is currently on academic leave to focus on getting pregnant. Despite her efforts, she hasn't seen any signs of conception yet. When her husband's sperm was tested, it was discovered that he was infertile. At that moment, her thoughts turned to Professor Sugura, her beloved mentor and father-in-law. The physical relationship she had fantasized about with him so many times, and now—those forbidden fantasies are about to become reality.
