The first time you felt me bottom out inside you, you knew there was no going back.

"Fuck." Your voice was sharp, coiled tight like a spring as your whole body shuddered with guilty tension. Your fingers dug into my shoulders like claws as you sucked in a ragged breath. You were getting more than you bargained for, that was for sure.

"Fuck," I agreed, but my voice was a lot less steady, my hips already twitching. I couldn't imagine myself withstanding this pressure for much longer. Not only were you already the deepest, tightest, sweetest fuck I'd ever experienced - even after just one stroke - you were also my sister, and that fact was unexpectedly slamming me with a whole new level of arousal.

"Don't you dare!" you hissed, settling into your new position in my lap. Nose to nose, your messy hair coming loose and framing your sweaty, flushed face in ways I'd never seen or even imagined. Your hot breath mingled with mine as you adjusted your seating, trying to find a comfortable angle to accommodate the thick shaft currently stuffing you to the hilt.

From this distance, I could count the freckles across your nose. "You're… beautiful," I murmured, surprising even myself.

"Wh-what the fuck, Alex?" you gasped, a renewed rush of guilt sweeping through you all of a sudden. Almost enough to make you come to your senses and climb off your little brother's cock.

Almost.

I found my breath again as I reached down to grasp your wide hips, holding you gently in place. Self-control. Focusing on the little things helped. "I like your eyeshadow. And the lip gloss."

"You're fucking with me. Your cock is twitching and grinding against your big sister's womb, and you're talking about my makeup!?" As if to reiterate your point, your core throbbed hungrily, a squeezing of your pelvic muscles clamping down on my shaft as it swelled inside you with every heartbeat.

I hazarded a tense smile, resisting the urge to buck my hips. Don't rush. "It's cute. What flavour is it?" Before you could even scoff at the transparency of the question, my lips darted forward to press hungrily against yours, a voracious kiss that went almost as far beyond normal sibling affections as our coupling down below.

To my slight surprise, I felt you melt, slumping into the kiss with your whole body. Your naked chest pressed into mine, all the tension instantly released with a low, incoherent murmur that leaked from your open mouth into my own, pushed out by your unconsciously lascivious tongue.

Feeling more confident, I slid my hands up your sides, around your back to pull you into an embrace as I finally gave you the kiss I'd been longing to for years.

Though the kiss paradoxically calmed me, I could not ignore the fluttering heat of your pussy for long. My cock, speared deep inside my only flesh and blood sister, was trembling with need, and your shapely legs tightly straddling my lap were not helping matters.

Barely, ever so barely breaking the kiss to give us half an inch of room to speak, I looked you dead in the eye and begged, "Ride me, sis."

"Oh, fuuuuck," you repeated yourself, but this time it was a fierce, hungry moan as your eyes glazed over with the same powerful need that was currently churning within me. Your round ass shifted in my lap, gently twisting the thick shaft that was nestled so deep inside you. "I need you," came the following whimper.

"You've got me," I groaned, letting my hands wander to your waist again. Slowly, I began rocking your abdomen, the motion lifting your butt just a tiny bit before bringing you back down. "Forever, if you want."

A hoarse chuckle, breath catching in your throat as my cock prodded your deepest parts. "I think mom and dad would notice if we were gone that long."

"Then you'd better be a good girl and cum quickly," I teased. "Ride me," I repeated. "Please."

"I'm older than you, jerk!"

"Just do it. Or do I have to throw you onto the bed and take you myself?"

"Mmmnnnph." Your hips started to move, rocking slowly in time with my guiding hands.

I quirked an eyebrow. "Oh? You like that idea, do you?"

"N-no," you said quickly, but your eyes were too close to mine to hide the lie.

I smiled as I leaned in for another kiss. "Let me know if you change your mind," I whispered.

Heya! First things first, the prompt didn't get around to this, but I'd love breeding/impregnation to be a major factor in this RP - as suggested in the title. This can range from just dirty talk and risky creampies all the way up to full on pregnancy/lactation and so forth.

I left descriptions vague so you don't feel like you've got to jump into an established character. The only rule is that we're preferably both in our twenties. Let me know what sort of older sister you'd like to be. I can work with most any kind of lady, though I do have a preference towards the curvy, even slightly chubby side (one Amadani is a perfect realistic example, if you're familiar).

I've also, annoyingly, left the 'how we got here' a bit open to interpretation. I'd love to hear if you have any ideas - we can co-construct that part of the RP or just ignore it, whatever works.

Kinks: mostly self-evident. I am the softest of doms usually, don't mind being a bit switchy. I like kind-hearted teasing (typical sibling back and forth before, during and after sex is elite), foreplay and aftercare, affection, kissing, and most other passionate vanilla things (outside of knocking up your sister behind the family's backs).

Limits are butt stuff, toilet stuff, animal stuff, and cruel stuff.

I've said enough, drop me a line if this ramble gives you something to think about.