My quiet and serious sister suddenly asked me, “Would you like to practice massage with me?” When she applied oil to my back and started massaging me, her breasts touched my face, and she even massaged my groin area, right up to my balls. I got an erection from the erotic treatment. My serious sister forgot that I was her brother, and we started doing erotic things little by little, and finally… Please forget about us, the brother and sister who ejaculated together.