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The sun beat down mercilessly on the cracked asphalt of what used to be a highway, but Lucy barely felt the heat anymore. Her vault suit clung to her sweat-slicked skin, the yellow 33 emblazoned on her back faded and torn from weeks of scavenging. She’d been separated from the group again, Maximus off on some Brotherhood adventure with Dane, Cooper probably holed up somewhere getting high, and now she was alone with nothing but her Pip-Boy, a 10mm pistol, and the eerie silence that almost always preceded trouble.
She crested a ridge, boots crunching on gravel, and froze.
Twenty yards away, crouched over the carcass of a radstag, was a deathclaw.
It wasn’t like the ones she'd seen in Vegas. This one was bigger, easily twelve feet from snout to spiked tail, its mottled gray-green scales shimmering with oily iridescence under the sun. Muscles rippled beneath the armored hide like living steel cables. Massive claws, each one the length of her forearm, dug into the dead animal’s flank as it tore off chunks of flesh with a wet, crunching sound. The scent of blood and musk hit her like a wall.
Lucy’s heart slammed against her ribs so hard she thought it might crack them. She took one silent step backward. A pebble rolled under her boot.
The deathclaw’s head snapped up.
Golden slit-pupiled eyes locked onto her. Its nostrils flared, scenting the air. A low, rumbling growl rolled out of its throat, vibrating through the ground and straight into her bones. It rose slowly, towering over her even at a distance, the shredded radstag forgotten. Saliva dripped from jaws lined with teeth like combat knives.
“Oh god,” she whispered, voice trembling. “Please don’t—”
It charged.
She turned and ran, legs pumping, lungs burning. The ground shook behind her with every thunderous footfall. She risked a glance back and screamed as its arm was already swinging. The back of one massive claw caught her across the shoulders, not slicing but slamming her forward. She hit the dirt hard, rolling, tasting blood and dust. Her pistol flew from her grip and clattered away, out of reach.
Before she could scramble up, one massive clawed hand pinned her down between her shoulder blades. The weight was crushing but careful, enough to keep her still, but not enough to snap her spine. Hot, fetid breath washed over the back of her neck. She felt the creature’s snout nudge her hair, inhaling deeply.
“P-please,” she gasped, tears cutting tracks through the dirt on her cheeks. “I’m not—I don’t taste good, I swear—”
A rough, sandpaper tongue dragged up the side of her neck, tasting salt and fear. Lucy whimpered. The deathclaw’s other hand - god, the claws were so sharp - hooked into the collar of her vault suit and ripped downward in one savage motion. Fabric tore like paper. Cool air hit her bare back, then her ass as the suit was shredded all the way to her ankles. She was left in nothing but her boots and the tattered remnants of her underwear, which the beast hooked a claw under and sliced away without hesitation.
She was naked. Exposed. Pinned face-down in the dirt by a monster that outweighed her by a literal ton.
Lucy’s whole body shook with terror. “No, no, no—please, I’m begging you—”
The deathclaw’s free hand slid under her hips, lifting her ass into the air like she weighed nothing. Her knees scraped the ground, legs forced apart by the sheer width of its stance. She felt the hot, slick head of something enormous nudge against her pussy first—thick, ridged, leaking copious amounts of precum that smelled musky and strangely sweet. Her mind blanked with panic.
But the creature didn’t push in there.
Instead, it dragged that massive, tapered cock upward, smearing slick across her taint until the blunt tip pressed firmly against the tight ring of her asshole.
Lucy’s eyes flew wide. “Wait—there? No, not there, that’s—oh no, that’s my ass, you can’t—”
A low, almost soothing chuff rumbled from the deathclaw’s chest. One clawed finger, thicker than two of her own, circled her virgin pucker, spreading the natural lubrication that was already dripping from its cock in heavy ropes. The digit pressed in, just the tip, stretching her with burning insistence.
She cried out, fingers clawing at the dirt. “It hurts—please, it’s too big—”
But the finger kept going, working in and out, twisting, scissoring. A second joined it. Then a third. The stretch was obscene, painful, impossible. Tears streamed down her face. Her sphincter fluttered and clenched around the invading digits, trying to push them out even as more slick poured over her ass, easing the way.
The deathclaw growled again, deeper this time, and withdrew its fingers with a wet pop. The massive cockhead replaced them immediately, hot as a brand, impossibly wide. It pushed.
Lucy screamed.
The first inch breached her with a brutal pop. Her asshole stretched around the ridged girth like it was being split in half. Pain exploded through her pelvis, white-hot and overwhelming. She thrashed, sobbing, but the beast’s hand on her back kept her pinned perfectly in place. Another inch. Another. The ridges dragged against her inner walls, forcing her open wider than she’d ever imagined possible.
“It’s tearing me - oh god, I can’t - please stop - ”
But it didn’t stop. It kept feeding that monstrous cock into her ass, slow and relentless, until nearly half of it was buried inside her. Her belly bulged slightly from the sheer volume. She could feel every vein, every ridge, every pulse of the thing inside her guts.
Then something shifted.
The pain… changed.
It didn’t vanish, but it melted, twisting into something darker, hotter, deeper. Every ridge that had hurt now dragged pleasure along with the burn. Her clit—neglected, swollen—throbbed in time with her racing heart. A helpless, mortified moan slipped from her lips.
The deathclaw felt it. It paused, cock buried to the midpoint, and let out a pleased rumble that vibrated straight through her body and into her core.
It began to thrust.
Short, shallow strokes at first, working more of its length into her greedy ass. Lucy’s screams turned into broken, gasping cries. Her hips—traitorous, shameful—started rocking back to meet each thrust. The pain was still there, but it was fuel now, gasoline on the fire building low in her belly.
“F-fuck… it’s so deep… I shouldn’t - ah~! Why does it feel - ”
Another few inches sank home. The deathclaw’s heavy,balls, each the size of a grapefruit, slapped wetly against her dripping cunt with every thrust. Her juices ran down her thighs in rivulets. She was soaking, embarrassingly wet, her cunt clenching around nothing while her ass was stuffed fuller than any toy or lover could ever manage.
The beast picked up speed, its hips snapping forward, driving that ridged monster cock balls-deep into her ass on every stroke. The knot at the base, thick, swollen, bigger than her fist, bumped insistently against her stretched rim with every thrust, demanding entry.
Lucy’s mind fractured.
She was being fucked by a deathclaw. A goddamn deathclaw. And she was going to cum from it.
“Oh god, I’m - I’m gonna - please, the knot, I can’t take the knot - ”
But she wanted it. The words were lies even as she sobbed them. Her body had surrendered completely. Her ass fluttered and rippled around the invading cock, milking it, begging for more. Pleasure coiled tighter and tighter in her core, white-hot and unstoppable.
The deathclaw roared.
It slammed forward one final time. The knot popped past her ruined sphincter with a wet, obscene sound and inflated instantly inside her. Locked. Tied. Trapped.
Lucy came so hard her vision whited out.
Her scream was raw, animal, nothing like the sweet vault girl she used to be. Her asshole clenched and spasmed violently around the knot, wringing it, trying to pull it even deeper. Her untouched pussy squirted in long, humiliating arcs onto the dirt beneath her. Wave after wave crashed through her, each one stronger than the last, until she was just a drooling, shaking mess impaled on the deathclaw’s cock.
The beast wasn’t done.
Still locked inside her, it began to grind. Short, rolling thrusts that made the knot tug and pull at her overstuffed rim from the inside. The head of its cock, buried so deep she swore she could feel it in her chest, pulsed and swelled. Hot, thick ropes of cum began to flood her guts.
She felt every spurt. Gallon after gallon, it felt like, bloating her belly until she looked six months pregnant. The pressure was insane, delicious, overwhelming. Another orgasm ripped through her before the first had even finished, then another, until she lost count. Her eyes rolled back. Drool spilled from her open mouth onto the ground. She was nothing but a cock-sleeve for the monster now, ass knotted and overflowing, body shuddering through endless, shattering pleasure.
Minutes passed. Maybe hours. Time had no meaning while she was tied to the deathclaw’s throbbing knot.
Eventually the swelling began to go down. The beast pulled back experimentally. The knot caught, still too big, and Lucy whimpered at the delicious tug. It tried again, and this time the massive bulb popped free with a gush of cum that poured out of her wrecked asshole in a thick, white torrent. Her hole gaped obscenely, red and puffy, twitching around nothing.
She collapsed forward, panting, ruined, and utterly sated.
But the deathclaw wasn’t finished with her.
It flipped her onto her back like she was a ragdoll. Her legs were spread wide, knees hooked over its massive forearms. That still-hard, cum-slick cock, now glistening with her ass juices and its own seed, pressed against her ruined hole again.
Lucy’s eyes fluttered open. She was shaking, tears still streaming, but when she looked up at the towering beast, there was no fear left in her gaze. Only glassy, fucked-out need.
“Again,” she whispered, voice hoarse. “Please… fuck my ass again.”
The deathclaw obliged.
It drove back into her in one smooth thrust, knot popping inside almost immediately this time. Lucy’s back arched off the ground, a fresh scream of pleasure tearing from her throat. Her hands reached up, fingers digging into the scales of its chest as best she could, holding on while it rutted her into the dirt.
This time she was vocal, shameless.
“Yes - fuck, yes - harder - knot me, breed my ass - oh god I’m cumming again - !”
She came three more times before the second knotting even finished. Her belly swelled even bigger with the second load. Cum leaked around the knot in steady streams, pooling beneath her ass.
When the beast finally pulled out again, she was a wreck, covered in dirt, sweat, and gallons of thick deathclaw cum that still bubbled from her gaping, ruined asshole. She could barely move. Her legs trembled every time she tried to close them. Her mind floated in a hazy, post-orgasmic bliss.
The deathclaw lowered itself over her, surprisingly gentle now. Its massive head nuzzled against her neck, tongue licking away tears and sweat. A low, almost purring rumble vibrated through its chest.
Lucy reached up with a shaky hand and stroked the side of its jaw.
“I… I shouldn’t have liked that,” she murmured, voice raw. “But I did. Fuck, I really did.”
She felt the creature’s cock twitch against her thigh, already hardening again.
A helpless, giddy laugh bubbled out of her. “You’re not done, are you?”
The deathclaw answered by rolling her onto her stomach once more, lifting her hips, and sliding back into her cum-filled ass with a wet squelch.
Lucy moaned like a whore in heat and pushed back to meet it.
Hours later, the sun was dipping toward the horizon when the deathclaw finally pulled free for the last time. Lucy lay in a puddle of mixed fluids, belly distended, asshole a wrecked, cum-drooling crater that refused to close. She’d lost count of how many times it had knotted her. Six? Seven? Each time had been harder, deeper, more possessive. Each time she’d cum until she blacked out, only to wake up to another brutal thrust.
She was ruined. Claimed. Owned.
And she’d never felt more alive.
The deathclaw crouched beside her, one massive claw gently stroking her sweat-matted hair. It made a soft, questioning sound.
Lucy turned her head, eyes heavy lips curved in a dazed, satisfied smile.
“Yeah,” she whispered. “I’m yours now. Take me with you.”
The beast carefully gathered her limp, cum-soaked body against its chest and rose. Lucy curled into the warmth of its scales, feeling the steady thump of its heart and the sticky mess still leaking from her ass with every step it took.
As the deathclaw carried its new mate deeper into the wasteland, Lucy MacLean, once the sweetest little Vaultie, closed her eyes and let the aftershocks of endless pleasure lull her to sleep.