I slammed the door behind me and yanked my sister Lisa against the wall the second we were alone in the house. "You been reading that shit again?" I growled, already palming her tits through her thin tank top. She moaned and nodded, hips grinding forward like a bitch in heat.
"Yeah, the archive stuff. That long one about the brother who fucks his sister every orbit around the sun. Got me so wet I had to finger myself in the car on the way home."
My cock was already rock hard. I shoved her shorts down, fingers diving straight into her soaked cunt. "Tell me what they did. Tell me while I stretch this pussy."
She gasped as two fingers pumped into her. "He bent her over the kitchen table every summer when the sun was highest. Called her his little orbit slut. Fucked her raw, came inside her, then made her lick him clean while their parents were outside."
I spun her around, bent her over the couch, and slammed my cock balls-deep in one thrust. Lisa cried out, pushing back to take every inch. "Just like that? You want to be my archive whore too?"
"Fuck yes. Pound me like those stories. Make it dirty."
I gripped her hips and railed her hard, the wet slap of skin filling the room. Her juices coated my shaft and ran down her thighs. Every time I bottomed out she clenched, begging for more. "Tell me the part where he eats her ass," I ordered.
She panted, words broken by my thrusts. "He spread her cheeks and tongue-fucked her hole while she read the next story out loud. Then he switched to her cunt and didn't stop until she came three times."
I dropped to my knees behind her, spread her ass, and buried my tongue in her tight hole exactly like she described. Lisa howled, pushing back on my face while her fingers worked her clit. I licked and sucked until she was shaking, then stood and drove my cock back into her dripping pussy.
We fucked like animals for the next hour. I flipped her onto her back on the floor, legs over my shoulders, pounding straight down into her. Her tits bounced with every thrust. She reached down and rubbed her swollen clit, eyes locked on mine.
"Fill me up like the story," she begged. "Pump that hot load deep so it leaks out while I walk around the house."
I came with a grunt, flooding her cunt. Thick ropes pumped into her while she clenched around me, milking every drop. When I pulled out, cum immediately started dripping from her stretched hole. Lisa scooped some onto her fingers and sucked them clean, just like the archive girls always did.
We didn't stop there. She crawled over, took my half-hard cock in her mouth, and sucked me back to full strength while telling me another story from the archive. This one had the brother fucking his sister in the backyard at midnight, the sun long gone but the heat still burning between them.
By the time the sun started setting we had moved to the kitchen table.

I had her on her back, knees to her chest, cock buried in her ass this time. She was loud, filthy, exactly the way the stories always got us both off.
"Next summer," she panted as I fucked her ass slow and deep, "we're doing every single position from that archive thread. Around the sun, around the house, wherever you want."
I came again, this time painting her insides while she rubbed another orgasm out of her clit. We stayed locked together, breathing hard, already planning which archive story we'd act out tomorrow.
Lisa grinned up at me, cum leaking from both holes. "Best part? We get to do it again and again. Just like they wrote it."