A pair of close sisters who divide their rooms with curtains. Whenever my sister's boyfriend comes to stay over, my sister is right next to me, so we have sex while keeping her voice in check. The younger sister was masturbating to the sound of her older sister's erotic breath leaking through the curtain. While my sister was sleeping, her boyfriend noticed and ejaculated inside her vagina, causing her to climax many times. Eventually, her younger sister begins to ask for raw sex and creampie herself.
