Child of Man
I've always had a fascination for the concept of an intelligent, sentient being being used and controlled by something that isn't. If mpreg and mind control isn't your kind of thing, then don't read this.
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"You coming down the gym today, Chris?" ask Jack.
"Nah, I've still got to work on the bathroom."
"You sure? Starting to get a bit of a belly there."
The husky looked down at his stomach. Sure enough, his shirt bulged out slightly, a round ball of flesh starting become visible. It looked out of place, as the rest of the dog's body was thick with toned muscle, thanks to his frequent after-work trips with his car-sharer to the gym.
"Yeah, I'll have to work it off, but I really need to get my house sorted."
Jack pulled up outside Chris' house. As he got out, the bull in the front seat called to him, "Take care of yourself, man."
"You too," he said back.
The dogs first action once inside his house was to rush to the bathroom. Over the recent days, his bladder seemed to be under more and more pressure, and he had found himself dashing to the toilet twice an hour that day. The bathroom, contrary to what he had told Jack, was in perfect condition, unusually clean for a man living on his own.
Once done, he made his way to the door beneath the stairs that lead to the cellar. In this old Victorian terrace, the cellar was two rough boxes, the ceiling not quite high enough for him to stand upright. The door was flimsy wood, not enough to stop a determined attempt to force entry, but he still locked it everyday before he went out, and kept the key on a chain around his neck. He fished it out, and turned it in the lock. He paused for a few seconds, before the siren call of that which awaited him overwhelmed his resolve, and he clambered down the stairwell into the dark.
He had quickly learned that it didn't like the light.
It moved as he entered its presence. He caught a glimpse of the light reflecting off its carapace, and heard the clicks of claws on the brickwork.
"People are starting to notice," he told it, expecting no answer. "I don't know how much longer it'll be before I can't go out in public."
He ran his hand under his shirt, and then shrugged it off, revealing his stomach in all its glory. His thick white fur was distended and stretched to the point where the pink flesh beneath was showed through, the muscle stretched over the growing bulge. It was an incongruous sight, as the rest of his body was slim and taut with muscle and thick fur.
He cradled his stomach, his left hand supporting it while his right rubbed gently through the fur. "I don't know what I'll do. Is...is this something you know about? Or does your kind normally use..." He trailed off, and laughed to himself.
"I was about to say dumb animals, but look at me. As if you've been anything less than perfectly in control all the time."
He reached out. He found that he didn't need to see where it was, but could find it purely by instinct. He touched smooth chitin, and slowly ran the soft pads of his paw over the ridges in its carapace. "I could never have resisted, could I? When I saw you come down in the woods, and I hid your egg down here, I thought I was saving you from the government, but it was you, wasn't it? Influencing me?"
His voice wavered as he spoke. "And I don't care about that. I don't know if it's what you've done to me, but I don't care that I don't have a choice anymore. I want you to use me. I want to do everything I can."
The creature moved at the sound of his distress, legs clicking on the packed earth floor. It circled behind him, and a cold claw clutched at his chest, just above the bulge. "There's only one thing I'm afraid of. If- if I die... when I-I... when I give birth, if I don't survive..."
Tears dripped down the soft fur of his muzzle. His voice cracked and broke. "I won't get to see our babies. I just want to see our children."
"Please. Tell me! Will I live to see our children?"
But the thing didn't answer. It never would.
It squirted something into the crying husky's face. Pheromones, he guessed. Chemicals that rushed through his bloodstream, acting inside his mind as if they belonged there, the malign alien influence bypassing his consciousness and telling his body to do exactly what the creature wanted.
The black fear of death that had been hanging over him all day evaporated, replaced by a heat that shivered through his whole being. "Oh, again?" he gasped. "Have you got to..."
Hormones flooded through him. The alien's claws hooked the belt of his trousers and tore them off, exposing his white fluffy butt. "Why- why do you do this every time-"
His penis was already slipping out of its sheath, hardening in the cold air. He followed the instincts installed in him, and lent forward, bracing his arms on his legs. His tail curled up over his back, revealing the puckered sphincter that quivered in anticipation. As long limbs wrapped around his chest and held him immobile, he let out a shivering moan, his heated metabolism causing his breath to steam in the air.
Something cold and smooth touched the rim of his anus, then jerked back as his body spasmed and thrust back, begged to be impaled.
He'd never seen the creature's ovipositor, though he knew the shape of it so well. The tip was a rounded bulge, maybe an inch wide, but he had no idea how long it was - he felt the smooth chitin against his rear, still, even though the length thrust deeper into him, smoothly fucking him.
The tiny part of Chris' mind still capable of conscious thought questioned why the being impregnated him again, each and every day. Perhaps it was bonding, the pure pleasure making him more dependent on the creature. Or maybe it was pumping him full of mind altering chemicals again.
No. That would be crazy. He'd never even think about running away.
The rest of his thoughts were occupied with the ovipositor seeking it's way up his anus. With each thrust it went deeper, then paused, drawing back before plunging further into him. Lubricating mucus dripped down his legs as it pooled between his tight buttocks.
Something split off from the tube. Warping the walls of his rectum, it wrapped around his prostate, and the husky's dick jumped. It squeezed in time with the thrusts, and his eyes rolled back into his head. Pre cum flowed, even though he hadn't touched himself.
The tip of the alien intruder reached its destination. Chris yelped as he felt the tube fill with a cold liquid, chilling his entire being. He squirmed and moaned, his belly distending even further, painfully stretched with the burden. It would shrink slightly as the fluids were absorbed, but it would still have grown. His eyes were screwed shut with the discomfort and cold forced into him, but the thing kept stroking his prostrate, and he couldn't help but to jerk with pleasure in response.
His hot cock was pressed against the coldness of his stomach, the contrast in temperature almost burning both if them. It paused for a second - he thought it was as if to say, "Good boy!" - and then tugged harder. Unable to resist, his mind controlled by his body, and his body controlled by the alien, he came, hard. Semen splattered against the pregnant curve of his belly, and the inside of his arms.
Slowly, delicately, the thing pulled itself out of him. He remained in the position as it released him, and then collapsed to his knees.
For a time at least, he wouldn't worry about not seeing his children.