Nina has been married for a while, but the couple still has no children. Nina's parents-in-law kept urging her, making her feel extremely pressured. On the occasion of the family's upcoming trip to a hot spring, Nina's mother-in-law asked Nina to control her sexual desires one month before the trip. The couple releasing their suppressed sexual desire for a month at the hot spring will help Nina get pregnant more easily. And the departure day has come, the whole family sets off together. When she arrived, because she had been restrained for a long time, Nina already wanted to be fucked. But Nina's husband ignored this, leaving her alone, causing Nina to masturbate to relieve her craving for sex. Nina's father-in-law also wanted to fuck his wife, but she wouldn't let him. Passing by Nina's bathroom, he saw her masturbating. From there, he also learned of Nina's current situation. After dinner, Nina continued to masturbate. This time her father-in-law couldn't take it anymore, he went inside and fucked her! Nina only resisted weakly, she was quickly dominated by the feeling of wanting to fuck and the pleasure that her father-in-law brought. Nina actively kicked her tongue and thrust her pussy onto her father-in-law's big, hard bare cock, letting him ejaculate into her uterus. During their stay here, the two secretly fucked each other over and over again, even though Nina's husband was sleeping next to them. After returning for a while, Nina discovered she was pregnant. Her husband and mother-in-law were extremely happy, only Nina and her father-in-law felt extremely confused, because they both knew who the child in her womb belonged to...