My sister owed me a favor, and it involved sex. I was ready to make her fantasy come true. She wore my lingerie, and we indulged in a wild session of anal fun.

In a game of cards, my sister's partner owed me a favor. What did I want? A wild night with her, exploring every inch of her body in the most intimate ways. As a card was drawn, the agreement was made. Later that night, she was ready to fulfill her obligation. She's always been a bit naughty, a lover of lingerie and risqué attire. But tonight, she was all mine. We started with some teasing, her showing off her curves in her sexy underwear, before moving on to more intimate pleasures. She's never been one to shy away from a good assfucking, and tonight was no exception. She took it like a champ, moaning in pleasure as I explored her depths. It was a wild ride, but I knew I had to give her what she wanted. And boy, did I deliver. The look on her face said it all - she was more than satisfied with our little game of infidelity.