HHKL-080 - My sister, who never turned me on, is suddenly showing off her tight uniform and that ass is lethal

People think having a high school sister is a dream, but she's just family to me. That changed when she showed off her new sports uniform. The way it hugged her ass was so erotic, I lost control and immediately took her. Turns out, she was pent up from all that training, and she couldn't get enough of my cock, begging for more as I filled her up over and over.