In this adult stepsibling role-play, I am the only virgin in my class until my older stepsister comforts me and offers to have sex. I happily accept and finally lose my virginity, but the pleasure only makes me want another round, then another. When she tries to escape, I chase her through the house and keep pounding and creampieing her. She screams that she has cum too many times and is losing her mind, but I refuse to stop until I am satisfied—and insist that she was the one who invited me first.