As I walked into my sisters apartment, I couldnt help but notice how completely different it was from the sterile living space we had shared growing up.The walls were painted with dark colors, the furniture was sleek and modern, and there was an unmistakable scent of lust in the air.As I walked further inside, I heard moans and gasps coming from the bedroom, and suddenly, I found myself standing right outside the door, unable to look away.My sister was naked, lying on top of a large, imposing dildo, her mouth stuffed with a thick cock that I recognized instantly as belonging to our mutual friend, Jake.As I watched, he pulled back, taking aim at her pussy, and let loose a powerful shot that sent waves of pleasure shooting through her body, causing her to scream out in ecstasy.He fucked her relentlessly, his massive shaft gliding in and out of her slick, wet cunt, as I stood there, biting my lip and trying to hold back my own desire.But before I could take another step, Jake caught sight of me, and his expression changed in an instant, going from pure enjoyment to surprise.He looked down at my body, taking in the sight of me standing there in nothing but my own skin, and a sudden hunger stirred deep within my core.With a growl, he grabbed me, pulling me onto the bed and flipping me over, so that I was lying face down on top of him.He wasted no time in entering me from behind, his dick sliding deep into my wet hole as he took control of my body, moving me roughly from side to side, never once stopping to give me breath.His hands gripped my hips tightly, holding me still as he took me hard and fast, making me cry out in pleasure.I couldnt help but think that maybe, just maybe, my big sister was actually enjoying every single moment of this deviant production.