Lily and Satoshi have been married for three years, and she has lived with her father-in-law during this time. Even though they have lived together for a long time, she still cannot get closer to her conservative and stubborn father-in-law. Because he is a conservative man, with a male-dominated ideology, he does not allow Lily to eat with the whole family, and is not allowed to interrupt when men talk... He also constantly reminds the couple to quickly have a son to continue the family line. She also wants to have a child, but Satoshi has erectile dysfunction, and he always ejaculates before Lily can feel anything. Because she is afraid that her husband will be hurt, Lily does not say anything. But her father-in-law downstairs can tell what she is thinking just by listening. One day after making love with her husband, Lily is taking a shower when she sees her father-in-law standing there looking at her. He said that he knew that she was not satisfied, so he wanted to make it up to her. And that night, her father-in-law let Lily feel what happiness was, a feeling that her husband had never been able to give her. After that, even though she wanted to deny it, that feeling of happiness always lingered in her mind, making her feel restless, wanting to enjoy it more. And from then on, she and her father-in-law had sex countless times, each time she let him ejaculate inside her. Everything continued until the day Lily discovered she was pregnant, and she herself did not know who the baby in her belly belonged to...