The Offer
Copyright© 2026 by Tharnoren
Chapter 20
Incest Sex Story: Chapter 20 - 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
The next morning, Alan surfaced from a deep, restless sleep, his mind still clouded by the haze of a night cut far too short.
Sunlight seeped weakly through the half-closed blinds in his room, casting dusty streaks across the floor littered with scattered clothes and forgotten textbooks.
He groaned as he stretched, his muscles aching like he’d been dragged through a brutal workout, and fumbled blindly on his nightstand for his phone. The screen lit up with a harsh glare that stung his eyes, showing the time: barely seven.
Another day of classes loomed ahead, packed with math equations and droning professors who seemed to suck the life out of everything.
He unlocked it with a lazy thumb swipe, scrolling past the usual notifications—a lab reminder, a group chat from his buddies about some upcoming party—until his eyes snagged on an unexpected name: Rebecah.
What the fuck, Rebecah? he thought immediately, his brow furrowing deep.
And then, like a floodgate bursting open, it all crashed back in a raw, almost tangible rush. The previous evening, which had felt so distant upon waking—like a nightmare shoved to the back of his mind—hit him with chilling clarity.
Her in his apartment, that surreal invasion, the threat lurking like a vicious shadow, the video—fuck, the video. His gut twisted sharply, a sour bile rising in his throat, forcing him to bolt upright on the edge of the bed.
He’d almost forgotten, or at least buried it in some dark recess to get through the night, but now, right at dawn, it all surged again: the blackmail, the manipulation, that clammy betrayal clinging to his skin like chilled sweat.
The messages popped up when he tapped the notification, and he read them with mounting dread, the words etching into his brain like sharp edges: “Come on, a little reminder so you don’t forget: reconcile with your sister, and make sure she feels plenty guilty. She needs to realize you’re a victim too, and that her own sister didn’t back her up when it mattered. The goal is for her to tell you it’s not your fault, got it? Once she says that, we move to the next step. 😘”
And the next one, like a final blow: “Oh, and you’ve got a week max, or the video goes out to everyone. Kisses! 😏😉”
Alan froze on the screen, his heart thudding heavily in his chest, those mocking emojis hitting like a smug slap.
A week. Fuck, just one week.
He set the phone down on the bed like it scorched him, stood up on autopilot, his legs shaky, and headed to the tiny bathroom in his apartment. As he got ready—mechanical toothbrushing, clothes pulled on without a thought—his mind looped on one thing: that fucking video. Him coming, that raw vulnerability captured in full, laid bare like an open wound. Panic gripped him hard, a deep unease knotting his insides: what if Mom and Dad saw it?
The mere thought drilled into his head, a gut-wrenching revulsion mixed with shame that had him sweating despite the cool morning air. Their disappointed stares, their unspoken questions, the family bond he’d already cracked without meaning to—all for what? For this lunatic pulling strings like a sadistic puppeteer. Under the shower, hot water pouring over his skin, he tried to pull himself together, drawing in deep breaths to push back the nausea, exhaling slow to quiet the storm in his head.
He ran through his options one by one, like a desperate checklist: tell someone? No fucking way—Rebecah had forbidden it outright, threatening to send the video if he breathed a word, whether to Madison or anyone else. Report this psycho? How? The cops? Hell no—not even worth considering; one wrong move, and it all blew up, the video spreading mercilessly. He kept thinking, soap stinging his eyes without him noticing, hunting for a loophole, an out, but nothing came.
Zero. Just emptiness, and this creeping resignation seeping in like slow poison: fine, he had to find a way to get her forgiveness. Fuck, Madi ... what kind of shit have you gotten us into...
The morning lecture blurred by like a haze of static, a jumble of droning voices and slides flickering across the massive auditorium screen. Alan slumped at the back, his spine curved against the unforgiving seat, his pen frozen between his fingers, staring at a blank spot on his empty notebook.
He wasn’t absorbing a single thing—not a word about differential equations or the circuit diagrams scrolling past—his mind churning in some distant storm, locked in a relentless cycle: how to earn her forgiveness without it reeking of bullshit, without the whole thing screaming manipulation from a mile away? At the same time, the chill between them gnawed at him deep inside, a nagging itch twisting his guts, like an emptiness swelling with every silent hour.
He wanted things to get better, genuinely—not just for Rebecah and her twisted blackmail, but for them, for that sibling bond that had always been rock-solid before everything spun out of control. Hell, he figured he’d just be straight with her; after all, Madison knew him inside out, she’d see right through any game, she’d get it ... or at least, he hoped so, that sharp edge of dread clamping his throat.
He made up his mind to catch her right before her swim practice—that was the sweet spot. He bailed from the lecture hall early, shoving his stuff into his bag with a rough jerk, blowing off the quizzical stare from the guy next to him who muttered, “Hey, dude, don’t even think about hitting me up for notes, alright?” without getting a peep back.
Madi had her training slot from noon to two; if he didn’t want to miss her, he’d better hustle straight over, cutting across campus with hurried strides, the midday sun pounding his neck, cranking up the anxious sweat already dotting his skin.
Outside the campus pool entrance, he waited, leaning against a chipped wall, almost awkward as people streamed by—students in workout gear, rushed professors, bursts of laughter he couldn’t join.
He felt raw, exposed, like every passing glance could peel back the chaos in his head. Finally, he spotted Madi, half-dressed for the water, her one-piece suit hugging her toned athletic build under loose shorts, a towel slung around her neck like a makeshift scarf.
She saw him and froze hard—dead in her tracks, her cheeks flooding with a deep crimson that crept up to her ears, her mouth parting but no sound escaping, like the words had jammed right there in her windpipe.
It was Alan who broke the ice, stepping closer with a voice thick and raw that gave away his discomfort, hands jammed in his pockets to hide the shake.
“Madi, listen ... I’m sorry, really. I’ve been wrecked since the other night, fuck, I didn’t want us fighting like this, didn’t want to embarrass you or ... I don’t know, screw everything up.”
He pushed out a smile, a brittle flicker that never touched his eyes, and dropped his voice lower: “I just want my big sister back, you know? Like before.”
Madison stared at him for a beat, her brows knitting together, a mix of confusion and embarrassment flashing across her flushed face, before she mumbled a curt “Later,” barely audible, and bolted toward the pool without a backward glance, her hurried steps echoing off the concrete like an escape.
Alan stood there, a bit stunned, arms dangling limp, a spike of irritation squeezing his chest—she just blew me off? Fuck, for real?
Later that evening, Alan shoved open the door to the campus gym, hit by that familiar tang of sweat and scorched rubber wrapping around him like a twisted comfort. The fluorescent lights hummed overhead, casting a harsh glow on the rows of dumbbells and the steady drone of treadmills in the background—a mechanical pulse clashing with the storm raging in his skull. Sean was already there, loading up a bar for squats, his soaked T-shirt clinging to his ripped chest, a smirk cracking his face when he spotted Alan heading over.
“Hey, man, you look like the walking dead. Ready to blow off some steam?”
Alan nodded half-heartedly, grabbing a pair of dumbbells to warm up, but he dove in hard right away—fast reps, heavy weights, as if each lift could purge the crap piling up in his brain. Maybe it would clear his head, drown out that nagging frustration eating at him since Madison’s brush-off at the pool.
His muscles were already on fire, a sharp burn that dulled the deeper ache, but a buzz in his pocket yanked him out of it. He dropped the weights with a heavy thud, fished out his phone, and his gut clenched hard: Rebecah. Her again.
The message was straightforward, vicious in its casual cruelty: “So, run into your sister today? 😏”
He didn’t reply, shoving the thing back with a furious flick, but it was too late—the floodgates had burst. Now it looped endlessly: Madi obviously dodging any real talk, that “later” tossed out like a slammed door.
It pissed him off a little—no, a lot—the way she’d left him hanging, as if he was the only one to blame in this mess. Then, inevitably, his mind circled back to the deadline, that hanging blade: a week ... fuck, just a week!
Doubt slammed into him raw, a chill seeping through his veins despite the sweat dripping down his brow. If she kept sulking like this—her usual stubborn streak that could drag on for days, even weeks—he was screwed. Totally.
How the hell was he supposed to make her feel guilty if she wouldn’t even hear him out? Sean, who’d clocked his foul mood for a while, set down his bar with a grunt and came over, wiping his forehead with the back of his arm.
“What’s eating you up like that? You look ready to smash the equipment.”
Alan paused for a beat, then spilled it straight, honest because Sean was the kind of buddy who didn’t pry too deep: “It’s Madi. She’s avoiding me big time, still pissed about ... our ‘fight.’”
Sean shrugged, a short laugh slipping out.
“Ah ... For real, man, I could give you tips on winning back a heart—like flowers, teary apologies, the whole kit for an ex. But for a sister? No clue, fuck. Maybe just ... lay it out straight? Or wait it out?”
Alan forced a grin, but the seed took root anyway—not Sean’s idea, but something darker, slithering in like poison: rope in someone else, tip the scales without pushing too hard. The thought hit him sharp and scheming, leaving him feeling even dirtier, but he tucked it away for later, powering through the rest of the workout on autopilot, muscles quivering, his head already miles away.
Back at his place, the apartment sunk in a dull gray haze broken only by the fridge’s open glow slicing through the dimness, Alan dropped onto the worn couch, phone clutched in his grip. He stalled for ages, thumb hovering over the contacts icon, before finally tapping “Mom.”
The ringtone hummed, and when she picked up, her warm voice—laced with surprise, since he rarely called mid-week without some agenda—hit him like a gut punch of everything he stood to lose.
“Alan? Sweetheart, everything okay? You don’t usually ring during the week...”
He dialed up a touch of melancholy, forced but believable—starting with small talk: classes dragging him down, a bullshit story about a botched lab, the crap weather on campus. She chuckled softly, tossing back the usual questions, but she was the one who cracked first, picking up on the undercurrent: “Okay, Alan, spill it: is everything really alright? You sound ... I don’t know, a little down.”
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