My usually well-behaved and serious sister suddenly said, "Will you help me practice massage?" As she started massaging my entire back covered in oil, her breasts pressed against my face, and she even massaged right up to the edge of my groin. The service was so erotic that I couldn't help but get an erection. My serious sister forgot that I was her brother, and little by little, things developed into lewd acts. Eventually... Please forget about us, the perverted siblings, climaxing together.
