Because I had to go for an interview in Tokyo, my brother let me stay at his house for three days. While looking for a toilet, I accidentally saw my sister-in-law's beautiful butt. That image kept appearing in my head. The next day, after returning from the interview, she was kneeling down to clean the floor, making that gorgeous butt burn into my mind. While watching her sleeping on the chair, my endurance was beyond the limit, I rushed towards her, took over her body and ejaculated inside her... And our secret relationship remained for a long time. three days... until I moved to Tokyo, near his home to start work...