Since getting married, Meguri and her husband have tried very hard but have not had children yet. Furthermore, Meguri's husband suffered from premature ejaculation, causing her to never feel the pleasure of sex. Her mother-in-law passed away three years ago, so Meguri and her husband decided to buy a house and live with her father-in-law. The father-in-law also knew that his son had erectile dysfunction, and also knew that Meguri had never had his sexual desires satisfied. One day, her father-in-law accidentally discovered Meguri masturbating. This time he no longer hesitated, he wanted his daughter-in-law to reach the top, to give Meguri the child she always wanted...