It's been three years since I started living with my father-in-law at my husband's parents' house. I had a good relationship with my father-in-law and we lived a comfortable life, but my only worry was our nighttime activities. My husband was a premature ejaculator and would finish before I could climax, so I was never satisfied. My desires continued to grow day by day, and one day, when I finally reached my limit, I happened to run into my father-in-law when he returned home while I was masturbating while they were away.