Mana, her husband and father-in-law went to a hot spring. She never imagined that this family trip would become the stage for her father-in-law's NTR... Mana was given an aphrodisiac in her drink at dinner, and unable to resist her burning body, she gradually became a slut, eventually losing all sense of reason. As her husband slept beside her, her father-in-law thrust his raw dick into her, turning her into a sex slave begging for him to cum inside her...