Many thanks to my First Reader and Sexy Editor.
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When my sister Renee got home for the Christmas break, I was masturbating in her childhood bedroom. It wasn't some fetish thing. I had arrived home the day before for a begrudging family holiday, and found that my old room was occupied. My parents had had one of their classic explosive arguments, and my father had been exiled to my room. So, for the first night of my holiday visit, I slept in my sister's bed.
"Dennis, we'll figure it out when your sister gets here," Mom had said in her stop-asking-me-questions-or-so-help-me tone, when I asked about the sleeping arrangements. From her general mood, I doubted that forgiving my father would be part of the deal.
That first night was awkward. Ever since I left for college, I questioned every decision to return home. At least while Renee had been living there, I'd had a buddy to play video games with in the den while our parents either pretended to like each other or very loudly did not pretend.
For a couple hours that night, they pretended. I fielded the usual "how's life" questions, dodging topics of romance (I was excessively single) and work (dull). By the end of dinner, the facade was wearing thin. Dad stood without a word, cleared his dish, and retreated to my room.
I helped Mom clear the table. We didn't say much, which was typical for us. When things were cleaned up, she went to her room and shut her door.
It was barely past eight in the evening, and I was left alone with most of the house to myself. As I had when I had been living here, I spent my time in the den.
The den is down a set of stairs at one end of the kitchen. It is at the opposite end of the house from every other room, making it ideal for rambunctious sleep-overs growing up. All of our game systems were set up in there, and there was an old, soft couch that was perfect for curling up on. A couple of armchairs sat on either side of the couch.
One day, during my senior year of high school, Dad had come home with an enormous TV. This had sparked an intense series of arguments, but it had also given me and Renee a new refuge. Whenever our parents had a fight, we'd head downstairs and drown out the shouting with some Soul Calibur or Time Splitters.
I spent a couple of hours blasting splitters. Before I headed to bed, I took a picture of my feet up on the ottoman, with a mission cleared screen in the background. I texted it to Renee, along with Can't wait to see you. It's not the same without you.
I was brushing my teeth when my phone dinged. Can't wait to see you, too, bro ;), Renee had replied. As I lay down to sleep, something about the ';)' tickled my brain. I lay awake under my sister's sheets, surrounded by her old boy band posters and stuffed animals, trying not to believe that the winky face had subtext. I was asleep before I could figure it out.
The next morning, I woke with my head on the very edge of the bed. I was sporting half an erection, after some interesting dreams featuring Mrs. Claus and my sister. When I opened my eyes, I could see down the crack between my sister's bed and the night stand. A small lock-box, adorned with cute stickers, was wedged between the furniture. Curiosity took control, and I reached down and pulled the box out. It was locked with a three-digit code. I thumbed the latch absentmindedly, as I tried to inhabit my sister's mind to guess her code.
The box popped open. My sister hadn't scrambled the code.
I felt suddenly guilty as I looked in the box. I wasn't sure what private things I was about to discover, but when I saw what was in there, I was instantly rock hard.
On top was a photograph of my sister in red lingerie, spreading her legs on her bed, the same bed I had just slept in. One hand was on her breast, and the other was just sliding under her lace panties. I could tell that the panties and bra were see-through, but the lighting in the photograph was too dim for me to see anything, and just dim enough for me to imagine everything. Without thought, I took myself in hand and began to stroke.
Like I said, I didn't have a thing for my sister. At least, I hadn't up to that point. I was young, just two years out of college, and I would just get turned on, particularly when I saw images of scantily clad women. My penis wasn't concerned that it was my sister.
And in my morning haze, with horny Christmas dreams on my mind, I wasn't concerned either.
As I was stroking myself, I looked back in the box and saw a notebook labeled Freshman Year. I took it out and flipped it open to an early page. The date at the top placed the entry in my sister's first term of college.
I had a weird dream about my brother, she wrote. We were in the pool, messing around like we used to, but we were naked. And then I dove under the water and saw his dick, and it was big, and hard, and all I could think about was putting it in my-
"Ahem!"
I must have leapt two feet off the bed. Standing in the doorway, suitcase in hand, watching me jack off while reading her diary, was my sister. She was wearing leggings and a chunky hoodie; comfortable travel clothes. Her hair, which frequently changed color, was dyed midnight blue, and fell to her shoulders. She looked at me with a knowing smirk.
I tried to stammer out an excuse, but there was no way "It's not what it looks like" was going to work. I was completely naked, and my cock had gotten harder with my sister's sudden attention. I tried to cover it with the diary, but my penis was longer than the small book. The tip poked over the top.
"Having fun?" my sister asked. She seemed very calm for the situation, and surprised me by stepping into the bedroom and closing the door behind her. "Read anything interesting?"
I was speechless. Renee seemed unfazed by the sight of me resting her diary on my throbbing cock. She came to the bed and sat on the edge, casually glancing at the tip of my penis. "What part did you read?"
I couldn't find words. Was I supposed to say The part where you dreamed of sucking my cock in the pool? To my sister?
When I didn't answer, Renee grabbed her diary. She picked it up slowly, her fingertips lingering on my shaft as she pulled the book away. I covered myself with my hands. Renee looked at the page I'd started reading and grinned. "That was when it all started."
"When what started?" I croaked. Instead of answering, Renee flipped forward a few pages and then handed the diary back to me. It was dated about a month after the other, and read, I keep dreaming of him. It's making me curious to try the real thing. I think I'm going to name my dildo 'Dennis'.
While I was reading, Renee went to suitcase and pulled out a large, pink dildo. It was thick and veiny. She sat back down on the bed, pushed my hands aside, and held it up to my dick, comparing our sizes. "Dennis, meet Dennis."
"Renee..." I started, intending to recover some modesty, when she reached out and wrapped her hand around my cock. I grunted and my dick twitched, hardening even further.
"Damn, brother," she said, her voice full of unmasked lust. "I was a little worried I'd dreamed too big with Dennis 2 here, but you are magnificent." She traced her fingers lightly down my cock, gently brushing my balls. "Everything I'd hoped."
"Renee, we shouldn't..." I started to say, but she began to move her hand slowly along my shaft, and my cock betrayed me by oozing a drop of precum. I suddenly found words impossible. Keeping her hand on my penis, Renee lay down beside me, her mouth next to my ear.
"I've thought of this cock for a year and a half, Dennis," she whispered as she stroked me. I felt her warm breath on my cheek. "I tried to resist, thought it was wrong, but I crave it. I've fucked you a hundred times in my dreams, big brother. I've dreamed of swallowing your cum. I don't care anymore what's right. I just want you."
Then she kissed me, hard, moaning as our lips touched. The voice in my head yammering about the immorality of incest was drowned out by the screaming voice of lust. I pushed my tongue into my sister's mouth, earning another moan as our tongues twisted together.
As we kissed, my sister kept stroking my cock. I was riding the edge, debating finishing now or hoping for more, when Renee suddenly pulled away from the kiss and rose to her knees in the bed. Her blue eyes pierced mine as she gripped the hem of her hoodie, lifting it over her head and revealing her perfect breasts. They were clad only in a lacy blue bra, which just barely managed to hide her swollen nipples.
I only had a moment to admire my sister's lingerie before she reached behind her back, unclasped the bra, and tossed it to the floor. I gulped. Renee's soft tits bounced free as her bra fell away. I ached to take those breasts in my hands, to lick and suck them.
Renee continued stripping. I saw an urge in her eyes, which were now locked onto my hard cock. I stroked myself lightly, grinning when Renee whimpered at the sight. Her patience must have faltered, because she peeled her leggings and panties off unceremoniously and bounded back onto the bed.
"I can't wait anymore," she said as she straddled me, her hairy pussy hovering an inch over my cock. "I need you inside me." The urge to thrust deep inside my sister's sex was intense, the heat radiating off of her cunt pulling me, urging me inside. She lowered her hips until her wet lips grazed my shaft.
"Renee, I... you're my sister..." I protested weakly, insincerely. "We shouldn't..." But I wanted nothing more than to plunge my cock into my sister's depths, to hear her lustful screams.
