Even if you think you shouldn't put your hands on her, the urge to grope your little sister in a school swimsuit is overwhelming. The brother who's into school swimsuits sets his sights on his little sister's overly developed, tight body! While their parents are away on a trip and the house is empty for several days, the brother starts secretly filming his sister, but just watching isn't enough, and eventually... he uses his pure and innocent sister in a school swimsuit as an outlet for his sexual desires. Initially, the sister resisted, but she gradually becomes captivated by the pleasure of sex while wearing a school swimsuit. The entire process of incest between the big-breasted little sister and her perverted brother at home!
