Exclusive agreement with my girlfriend's seductive older sister: Part 1 featuring Akira Shell

After a steamy session with my girlfriend, I was surprised to find her seductive older sister, Akira Shell, already in our bedroom. It turned out she was aware of our arrangement and had a proposition for me. As it often does, reality surpassed my wildest fantasies. The sight of her in heels, teasing me with her big, blemish-free ass, was too much to resist. I asked her to take off her clothes, but she refused, and as I tried to undress her by force, she retaliated by stripping me naked. The thrill of being blackmailed by my girlfriend's friend, coupled with the sight of her voluptuous black body, ignited an intense desire within me. I took her in my arms, and she eagerly reciprocated my advances, treating me to a mind-blowing handjob. The encounter ended with her leaving, but the memory of our electrifying encounter lingered, leaving me craving more.