Reiko once worked as a model and later at a publishing company, living with her husband. However, her father-in-law's dementia worsened, so she quit her job to take care of him. Her father-in-law, still retired but possessing a seductive figure, praised Reiko enthusiastically! Flattered, Reiko revealed an intense swimsuit look, which strongly stimulated her father-in-law's penis! As if seeing through her pent-up desires, her father-in-law subjected her to intense, thick teasing, causing Reiko to unwittingly wet her crotch and allow penetration... During the gaps in her busy husband's schedule, their illicit relationship escalated.
