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In the Open space

Summary:

I wrote this for a friend's OC on discord <3 they gracefully let me write this fanfic smut of their character, and im open to critism or whatever...
Its got a lot of kinky shit, and im a teratophile so i should know.
Just read, you might like it...

Notes:

The giant alien is my friend's oc, Five, who is their own special species. Has a mouth on the side of their head, five eyes, a massive body the size of planets, and is very attractive so i asked to write smut and my friend gracefully said yes!

(See the end of the work for more notes.)

Work Text:

The airlock hissed, a nasty noise that sent Zero's mind into a slight panic. The airlock closed sealing Zero inside the biological chamber, it was like a cushy room of flesh with a doublewide bed in the middle, and a medium sized wooden piece that Zero swore was a breeding bench. His spacesuit was gone, the pale milky white fabric ripped from him, stripped by the hive's organic tendrils the moment he'd been captured. Now he stood naked on the pulsing floor. His hands covering his exposed pussy with both hands, his breasts were small, and his legs were a nice length.

Zero wouldn't call himself handsome, he had short fluffy blond hair with doe blue ocean eyes that glowed lightly in the flourscent lights. His cunt had a nice head of curly blond pubes that did little to hide his engorged clit. A shiver raked through his smaller body as he ventured further into the room. 

His skin glistened under the bioluminescent glow of the fleshy walls. He was a man—yes, but one with a unique biology. A neat, pink slit nestled in a nest of blond curly pubic hair, already slick with arousal from the atmosphere, a smell had him absolutely dripping all over his slick thighs and rubbed together with each step. Every jostling step slid a thick thigh over his suffering clit. He'd been born a man, and yet when he came here on this alien world he changed, usually he would pay no mind to his biology. That was before his dick was stolen but here on this alien world, it made him the perfect specimen.

 

The chamber's far wall rippled, dissolving into a doorway. A large hulking yet lithe being passed through, ducking slightly. And Zero realized just how big the room was, it went on for about a mile or two, then the roof was practically non existent. Either it was night and there was no roof, or the roof was just that high. 

The figure was a thing of beauty. Slightly humanoid in shape, but there the resemblance ended. The alien's skin was a deep grey like outer space, smooth and hairless, and was stretched over a frame that looked compressed. Like that wasn't even their true form. The alien stood at almost 10 feet tall, starkly different to Zero's 6 feet in height.

 

The alien, most likely male as Zero's eyes trailed down and gaped, its face was angular, with five glowing turquoise eyes arranged in a diamond pattern, and a mouth that split the side of its face into a cruel smile. But it was his lower body that commanded attention: where a human man had a cock, this beautiful alien had a cluster of thick, writhing tentacles, each one a deep stormy grey that glistened with a slick, light purple sticky fluid. The largest of them was as thick as Zero's forearm, tapered to a blunt, flat tip like a horse's almost, that pulsed with an alien heartbeat. Smaller tendrils coiled around it, twitching, searching.

 

"Zero," Five said, his voice resonating inside Zero's skull, bypassing his ears entirely. A mind-greeting, invasive and intimate. How did this alien know his name? Five's voice both sounded loud, mechanic and with thousands of background noises that ripped Zero's ears. While also being soothing and calm. 

 

Zero tried to step back, but his feet wouldn't move. The floor had softened, gripping his ankles in a warm, organic hold. And holding the poor man there in an action that flooded his senses as more delicious smells invaded his nostrils and made his mind soft, "Let me go. I'm not—I don't belong here."

 

"You belong to me now." Five strode forward, each step silent on the fleshy ground like it was solid for Five and yet liquid for Zero. Again Five's voice was a terrifyingly loud sound that rattled Zero's teeth and made the man cry out. He reached out, his hand cupping Zero's jaw, tilting his head up. His fingers were long, webbed, with tiny suction cups on the pads. More akin to a frog's then a human's. They left tingling trails on Zero's skin. "Your body will learn to crave us. To beg for our seed." Its voice a cruel purr as Zero shook his head, his knees wobbling.

 

Five's other hand dropped to Zero's chest, palm flat over his heart. The suction cups latched on, pulling gently at his skin, sending jolts of electric pleasure straight to his pussy. Zero gasped, his hips bucking forward. Slicked thighs slipping together and bucking against his engorged clit which forced a weak keening moan from Zero. 

"MmMm..." Zero tried to speak, his brain felt like mush.

 

"Pheromones," Five said, his mouth curling. "I am flooding your bloodstream with my scent. Your cunt is already weeping for me." He shoved Zero backward, and the floor released his ankles, catching him as he fell onto a soft, yielding surface that molded to his body like a living mattress or liquid trying not to swallow his hungry body. Zero landed on his ass, hips jutting forward with that slick soaked cunt that made Five lick their lips. Zero tried to find perchase on the liquid flooring but none came.

 

Five loomed over him, the tentacles writhing between his legs. He lowered himself, kneeling, and the largest tentacle rose, hovering above Zero's cunt. The tip was slick with what Zero hoped was pre-cum, a viscous lavender colored fluid that smelled of ozone and honey. "I am going to fill every hole you have," Five purred, his mind-voice dripping with predatory affection. "First, I will stretch your pussy. Then your ass. Then your throat. You will not leave this chamber until you have been bred full of my spawn."

 

Zero's mind screamed no, but his body was betraying him. The pheromones had turned his brain to mush, his eyes spun with violent desire. Zero felt his desire overriding his fear. His pussy clenched on emptiness. A wrecked moan bubbled from Zero's unblemished throat, begging to be filled. He was empty. Much too empty. "Wha..." he struggled at first and then he heard himself whimper, "plea..se fu-fuck m..e." he gulped as his eyes clenched shut and Five leaned over with those wriggling tentacles that just Zero knew would work magic on his aching cunt.

 

Five laughed, a sound like grinding stones. "Good boy," it was all in his mind, and yet vicious and mocking and yet so soothing and hopeful.

 

The tentacles pressed against his folds, at least it was only one for now. the blunt  flat head nudging at his entrance. It was so thick, Zero felt the stretch before it even pushed inside. His cunt gushed slick, sticking heavenly to the tentacles that if Zero squinted he could imagine it was just a bigger than average dick...if that bigger than average dick was about 14 inches and leaking so much pre-cum that it could drown Zero in it.

 

In one fluid motion, The tentacle drove deep, spreading his pussy wide around it. Zero screeched, he was unsure if out of pain or pleasure. Maybe both, the slick fluid easing the way as it filled him. He had never taken anything larger than his own fingers, his own lithe fingers didnt amount to anything. Zero felt something tear, his hymen probably, and whimpered. Throwing his head back in pain and pleasure, and this was a tentacle. The tentacle wasn't just a dick—it was alive, writhing inside him, pulsing and undulating, hitting spots he didn't know existed. The tentacle wiggled inside of him, Zero's vision went white as a long jet of squirting liquid slipped from his loose hole. He could feel it, the 'dick' coiling, thickening, then slithering deeper, pressing against his cervix. A rough broken moan escaped Zero, who then tried to shakily and weakly close his legs only to have the top two of Five's arms push them apart.

 

"Look at that little human" Five hissed, his eyes glowing brighter. The smaller tentacles slithered up Zero's thighs, wrapping around his hips, holding him open when Five lazily removed his hands. One thin tendril found his clit, circling it with a feather-light touch that made his whole body jerk. "Isn't this nice? Wait until i really fuck you." Five hissed calmly and leaned down while his smaller tentacles were holding Zero down while also flicking his clit like a symphony. Zero jerked as the alien leaned down, accidentally driving the apendage further in, Zero came with another shout.

 

Five's tongue lapped out. Tongue twirling around one of Zero's nipples--left one, while two hands were twisting and pinching the other, and the last hand was massaging the left breast as it was bitten and sucked. The alien began to thrust, thick strides while he sucked and nipped at the mounds of Zero's body. Leaving small trails of bite marks, bruises, and sloppy kisses along the clammy skin. The tentacle sliding in and out with obscene wet sounds. Zero's pussy squelched, his own arousal mixed with Five's slick, creating a thick cream that coated his thighs. He was being fucked, hard and deep, the rhythm relentless almost like the force of a jet plane and yet it was not enough. The tendril on his clit pressed harder, vibrating, and Zero felt his orgasm building, a pressure coiling in his gut like fire.

 

"Don't come yet," Five commanded, and his mind locked Zero's muscles, freezing him on the edge. A frustrated sob escaped Zero's throat. Zero sobbed openly, his mind couldnt form words so he only wriggled and writhed, whimpering and whining as if to argue. But Five's telepathic words stopped his movement. Clumpy eyelashes flickering up to the alien as his words register "I want to feel your ass first."

 

The tentacle withdrew, leaving Zero's pussy gaping, a rush of fluid spilling out. Before he could catch his breath, Five's tentacles grabbed the man's nice hips, flipping him onto his stomach. The floor rose to meet him, propping his ass up, his hole exposed. Another tentacle—this one slightly thinner, but covered in tiny barbs—pressed against his anus.

 

"No! n..ot ..ther..e—" Zero began his voice weak and hoarse as he was overstimulated, but the barbed tip was already pushing past his tight ring.

 

The barbs caught on his rim, pulling, stretching, dragging into his ass with a pain that blurred into pleasure. Zero howled, his fingers clawing at the floor. The floor only pushed his ass up further as if to stop him. The tentacle burrowed deep, curling inside him, and Five grunted, his telepathic voice a wave of satisfaction. "Both holes, full at the same time." The original thick tentacle slid back into his pussy, and now he was double-stuffed, two alien shafts fucking him in tandem. Zero whined, not noticing his hips snapping back to meet Five's thrusts.

 

Five leaned over Zero's back, his chest pressing against Zero's spine, his five diamond eyes staring down at the back of Zero's head. "You feel that? That is our connection. Your mind is opening to mine." And it was true—Zero could feel Five's thoughts bleeding into his own: alien concepts of ownership, of breeding, pups, pleasure, pleasure beyond human comprehension. He saw himself through Five's eyes: a beautiful little cocksleeve, a womb to be filled, a toy to be used.

 

"I'm going to come inside you," Five said, his pace quickening. Both tentacles swelled, pulsing with heat. "And when I do, you will carry my young. The hive will have a new broodmare." His telepathic voice was wicked and breathy.

 

Zero's orgasm was once again ripped from him, his body convulsing as Five released his mental grip. He came with a dick in his ass and one in his cunt, his pussy clenching around the tentacle, his ass tightening. Five roared, a guttural sound, and the tentacles jerked, spewing thick, hot lavender colored seed into both holes. The cum was viscous, almost gelatinous, filling Zero's pussy to overflowing, then pumping into his ass until his belly distended. And pushed on his bladder with a whine. The inflation was visible, his abdomen swelling with the sheer volume of alien spunk.

 

Five stayed buried for a long moment, grinding, ensuring every drop was absorbed. Then he pulled out slowly, the barbs dragging on Zero's sensitive rim, making him whimper. Cum oozed from both holes, pooling on the floor. The smaller tentacles slithered over Zero's skin, smearing the seed across his belly, his chest, his face. Marking him.

 

"Good boy," Five said, stroking Zero's hair. Zero couldn't manage a single word, mind full of mush as the man collasped limply.

 

Zero lay limp, his mind a haze of pleasure and surrender. He had been an astronaut, a man of science. Now he was just a hole. A breeder. A pet.

 

And deep down, he knew he didn't want it any other way.

Notes:

I like comments, go ahead and tell me what you think <3 i might write more smut later