The Offer
Copyright© 2026 by Tharnoren
Chapter 5
Incest Sex Story: Chapter 5 - College siblings Alan and Madison meet wealthy, provocative Rebecah at a wild night out. Her shocking offer—for them to indulge her taboo fantasy for cash—pulls them into a spiral of seduction, blackmail, and forbidden intimacy they can’t escape.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Blackmail Coercion Consensual Romantic Heterosexual Fiction Incest Brother Sister Humiliation Light Bond Rough Group Sex Anal Sex Analingus Cream Pie Facial Masturbation Oral Sex Spitting Slow Violence Illustrated
Rebecah couldn’t tear her eyes away from the scene, staring as if she were drinking in every tiny shift, every twitch. Madison still had her fingers resting at the base of Alan’s neck when she leaned in a little closer, and their lips finally met—a soft, warm, hesitant brush at first, barely a touch, already heavy with the weight of the forbidden. Then, almost without meaning to, Madison pushed deeper, her mouth parting just enough to catch his in a real kiss—slow, hungry, unflinchingly intimate.
Their eyes shut at the same time, a shared reflex that shut out the world and left only sensation: the humid heat of their mouths pressed together, the faint mix of beer and Coke on their tongues when they brushed, flicked, glided in a brief instinctive dance that shot a jolt straight down both their spines. Alan’s breath hitched against her skin, stumbling into a faster rhythm that synced with hers for just a heartbeat—as if their bodies, familiar since childhood, suddenly recognized something new in this impossible closeness.
Then, just as suddenly as it had begun, they pulled back from each other, breathing a little too fast, their lips parting with a soft, wet sound. They froze, caught in place, locked in a stare—dilated pupils, shock blooming between them, a cold realization seeping in like a draft. What the hell had they just done? Time stretched, heavy, until they both jerked their gazes away at the exact same second, mortified, cheeks burning, focusing on anything else—the table, the empty glasses—anything to avoid each other.
Rebecah, meanwhile, was absolutely thrilled—her jaw dropped wide, shock and pure excitement lighting up her face like she’d just witnessed something she was never meant to see.
“Holy shit, I did not expect it to be that hot!” she blurted, breathless, grinning like she was floating.
“I seriously loved every second of that...”
Alan and Madison still couldn’t speak, lips swollen from the kiss, brains stuck in a kind of stunned static.
Rebecah shook her head, still reeling.
“That was insane. Hold on, let me send the rest.” Her fingers flew across her phone, tapping fast—too fast, like someone who clearly had practice. Their phones chimed a moment later: the promised three grand, plus an extra two each. She looked up with a triumphant spark in her eyes.
“I added two thousand each, because ... goddamn, that was incredible. You didn’t just play along—you went all in.”
Both of them jumped slightly, startled—seven thousand dollars each, for that?
Madison pushed herself to her feet in a rush, legs unsteady, and Alan followed without a word, grabbing his jacket with a stiff, mechanical gesture. They gave Rebecah a vague little nod, distant and awkward, before turning toward the exit. She tried to stop them with a light, teasing voice: “Hey, wait, we could—”
But they didn’t slow, and she didn’t push, just watched them leave with a crooked smile that hid a flicker of regret.
Still dazed, they reached their car outside—the beat-up Ford that looked even shabbier under the dim parking-lot lights. Seven thousand dollars each, for a kiss—that number sat on them like a too-heavy secret, sinking into their veins with the thick, stormy unease of a summer night about to break.
The ride home settled into silence, thick as the darkness sliding past the windows. The radio crackled faintly—local ads for car insurance—ignored by both. Alan, hands clamped tight on his knees, finally cracked, his voice slicing through the quiet like a rock hitting still water.
“Jesus, that was insane! I mean, seven freaking grand just like that—bam. It’s nuts, right? We could fix the car, or cover rent for months without stressing. Fuck!”
Madison kept her eyes on the road, her grip tightening on the wheel until her knuckles whitened.
“Shut up, Alan. Stop talking about it. Forget the kiss. It’s done. We’re never speaking of it again.”
He blinked, thrown. “What? No—I wasn’t saying the kiss was insane! I mean ... it was ... I guess ... not like that, shit, I meant the money, the whole ridiculous situation—” His words tripped over each other, his face reddening all the way to the ears like his brain was slipping on ice.
“Alan, shut up,” she snapped, cutting him off sharply without looking away from the road.
Silence slammed down again, heavier than before.
When she pulled up in front of his building, the Ford rolled to a slow, quiet stop. He stepped out without another word, shut the door behind him, and she drove off into the night, ending the weekend like someone slamming a book shut mid-sentence. ---
The next few days slid by in a strange haze, as if the weekend had left some invisible fingerprint on everything they did. Alan and Madison still crossed paths on campus like always—a quick coffee between classes, a meme or a dumb joke about a boring professor—but something had shifted. Their glances lingered a second too long, their laughs sounded a bit rehearsed, and the silences that used to feel easy now pressed down on them like unspoken confessions.
During lunch with the group, between trays of lukewarm cafeteria food and loud debates about the latest football game, Bella narrowed her eyes at the two of them. She sat across from them with her usual steaming latte, studying them over the rim of her cup.
“Okay, what’s up with you two? You look like someone made you swallow an entire lemon. Was it that weekend at your parents’ place?”
Madison shrugged with a too-bright smile, muttering, “Nah, just burned out from classes,” while Alan shoved a bite of his sandwich into his mouth to avoid answering. Sean and Larry exchanged a knowing glance but didn’t push, drifting back into some half-assed story about last week’s party.
Still, the weirdness clung to them, a tight thread stretched between them that no one else seemed to notice.
Forgetting was impossible, no matter how hard they tried. The dim bar, the forced kiss that hadn’t felt forced at all by the end—it kept flashing back in fragments: a lingering heat on the mouth, a shiver running up the spine at the worst possible moment. And then there was the money—seven thousand dollars each, a sum that flipped their lives inside out in an instant.
Madison, practical as always, had jumped on the opportunity to finally sort out her chaotic life. She’d paid the month of rent she was behind on, sent the advance for the next without hesitation, and even settled the bill for the Ford’s repairs—the warning lights that had been screaming for weeks, signaling a dying alternator and worn-out brakes. She got the faulty lock on her apartment door replaced—the one that jammed every time she got home late—and treated herself to a new pair of sneakers, comfortable ones she could actually walk the campus in without wincing.
For the first time in ages, she could breathe: no more sleepless nights juggling bills, no more mental math gymnastics to stretch her budget to the end of the month. It felt like a weight had been lifted, giving her room to focus on her economics classes again, on market analyses she genuinely loved.
And yet she still couldn’t wrap her head around how the money had fallen into her life—so fast, so absurdly easy. Seven thousand dollars for a kiss. Rebecah, with her chauffeur and her Sunday spa routine, tossing thousands around like breadcrumbs for pigeons ... it was surreal.
Madison tried to shove the thought away, burying herself in revision or scrolling aimlessly through her phone, but it always slipped back in: a notification chime reminding her of the deposit, a glance at her bank balance that made her blush alone in her room. How did we get here? she wondered, chest tight with a cocktail of gratitude and disgust. She forced herself to rationalize—just a stupid moment, nothing more—but it didn’t stick. The unease bled into her dreams, keeping her awake, staring at the ceiling while the whole scene replayed behind her eyelids.
Alan wasn’t doing much better, though his reaction had a paranoid edge to it. He kept the money untouched in his PayPal account, not spending a single dollar, as if using it might make it disappear—or worse, make Rebecah show up again, or someone uncover the whole thing and demand it back. He preferred waiting, letting time pass, making sure it was real, that it actually belonged to him.
His engineering days unfolded normally—labs on materials, long hours spent buried in structural calculations—but at night, alone in his cramped apartment, the memory crept back in. That kiss with Madison, that stolen instant when their tongues brushed ... It didn’t belong in their simple, healthy sibling relationship.
They both tried to pretend nothing had happened—banal texts, stupid jokes when they crossed paths—but something lingered anyway, a quiet awkwardness that made everything feel just a bit too polite, a bit too careful. Like a tiny grain of sand in a shoe—barely noticeable at first, but rubbing raw with every step. ---
A few days later, the whole group met up again at a campus bar—a cozy place with exposed brick walls and warm lighting that cast a soft orange glow over the worn wooden tables. It was the kind of classic pub with a row of pint glasses behind the counter and an old-rock playlist humming in the background, loud enough to keep conversations private but never loud enough to drown out laughter.
Alan and Madison sat side by side on a booth, playing it cool, both clinging to the idea that what had happened was nothing—just a stupid dare, a forced kiss they could bury somewhere deep, like an old movie ticket forgotten in a jacket pocket. It didn’t matter, they told themselves; life had picked up again, filled with endless lectures and last-minute nights out.
Larry, ever the showman, raised his glass with a dramatic flourish.
“Alright, drinks are on me tonight! Won two hundred bucks playing online poker yesterday. I’m basically loaded now.”
He waved at the bartender for a new round, and the mood lifted instantly. Sean teased Bella about her latest attempt at cooking curry—an experiment that ended in a scorched frying pan—and she shot back by mimicking his nasal voice when he commentated football games. Alan took the chance to poke fun at Madison’s obsession with spreadsheets.
“Are you sure you don’t have a spreadsheet for your dreams, Madi? Like, column A: nightmares, column B: past-due bills?”
She elbowed him sharply, smirking. “At least I can count past ten.”
The banter bounced around the table—easy, familiar—and for a moment everything felt normal again, the unease shoved into a dark corner they both avoided looking at.
Then, in the middle of a burst of laughter, Madison’s phone buzzed insistently against the table, slicing clean through the mood. She glanced at the screen, frowned, and picked up with a neutral “Hello?”
Her face crumpled within seconds—tension tightening her features, her eyes widening as if someone had hit her with invisible force. The others fell silent immediately, the air thickening with sudden weight. Bella rested a hand on her arm, Sean whispered, “Everything okay?”
Alan felt his stomach twist, cold panic coiling in his gut—Dad, shit, please not another update about his heart—but Madison met his eyes and shook her head subtly, as if she’d read the thought right out of him. It wasn’t that.
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