It's been four years since we got married, and my husband and I have been living together in his family home, which was supposed to be empty. However, one day, a disturbing shadow fell over our peaceful daily lives. My father-in-law, who had been living overseas, suddenly returned to our home. Although we were bewildered, our life living together began, but I had one concern. It was our nighttime activities... he would always finish before I could reach climax. I have never once been satisfied by baby-making with my husband. And then, having reached the limit of my endurance, I was pleasuring myself on a quiet afternoon when my father-in-law caught me...