Author's Note : This is a slightly revised version of previously submitted story with the primary effort to correct grammatical mistakes made in the first release.
Just a warning there is a component of the story involving anal play and becomes more pronounced in the following chapters with the anal play going both ways. If you don't like that then please don't bother to continue further.
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I guess I should have noticed when my dreams on weekends were becoming very sexually oriented and that my sister and her friends having sleepovers at my parent's house seemed quite a coincidence, but I really didn't put it together. I was in my first year of college and living at home, I had the basement all to myself and I had it sectioned off into my bedroom, and my entertainment room. The room couldn't really be locked but in general my parents and sister all respected my privacy so it wasn't really a problem. My sister was a senior in high school as were all of her friends and the first sleep over of the school year that took place at our house coincided with my first wet dream in years, but after that weekend every weekend was a sleepover at my parents' house.
I'm a deep sleeper, before we moved to the northeast we had lived in California, and there were a couple of earthquakes that I slept right through even though in the morning I woke up with my shelves of awards and trophies entirely emptied on top of my bed and myself. I had no few bruises from the experiences and it is a wonder why I never considered moving the shelves to another part of my room.
On about the fifth weekend in a row that my sister and her friends were having a sleepover I woke up to the most incredible sensation, I slowly opened my eyes figuring I had to be dreaming to see my sister's friend Marissa's faced screwed up in an expression of combined pleasure and pain as she was straddling me. Her eyes met mine as she continued to lower her tight pussy onto my rock hard cock.
" What's going on?" I was barely able to get my lips to form just as Marissa reached bottom and then she shook with an orgasm.
While Marissa recovered a voice to my right made me turn to face my own sister, " Finally woke-up big brother?"
Beside my sister was her other friend Katie whose eyes were glued to where my cock was buried in Marissa's cunt.
Marissa was a dark haired Latino girl, she had plump breasts C sized with hips that were already curving out for woman hood, and I had noticed her most fuckable ass on multiple occasions. Katie was blonde, her eyes innocent blue, she had a very slim figure, barely A sized breasts, and a very small round ass. My sister was a younger female version of me. Everything that made me look feminine looked cute on her, from our straight light brown hair, oversized eyelashes, to our thin bone structure, she probably had B sized breasts but I honestly had never really looked.
