My girlfriend's younger sister, who was like a child in heat, couldn't say no. After secretly and continuously thrusting in and out... she actually became my penis's captive. (SONE-127)

I went to my girlfriend's house and met her adorable little sister. I liked her more than my girlfriend. I boldly attacked her; although she seemed unwilling, her resistance was weak. I boldly fondled her breasts, played with her with my fingers, and forced her to perform oral sex. I took the opportunity to penetrate her. From that day on, she became a prisoner of my penis, and we secretly made love many times without my girlfriend's knowledge.