Chapter 18: Monstrous Competition
The wrench felt cold and familiar in my hand, a relic from a dead world. I used it to pry up the last floorboard under the workbench, the wood groaning in protest. The others watched, their breathing heavy in the thick silence. Buck and Grunts were docile in the corner, their latest deposits still warm inside us. Our bellies, visibly swollen, ached with a perpetual, low-grade fullness.
“There’s something here,” I grunted, my voice rough from disuse and screaming.
A sealed metal case, military-grade, was nestled in the dirt. It was different from the lockbox that held the vials. This one was plain, unmarked. Mary dragged it out, her pregnant stomach making the motion awkward. She clicked the latches. Inside, nestled in foam, were four syringes filled with a clear, amber fluid. Underneath them lay a single sheet of paper.
Ellie took the paper, her hands trembling slightly. She smoothed it on the benchtop, next to her forgotten sketchbook. We crowded around, our massive breasts pressing against each other, the smell of sweat, sex, and milk overpowering.
“STAGE FOUR NEUTRALIZING AGENT,” she read aloud, her voice a whisper. “Administration intravenously reverses all somatic alterations induced by Formula X-22, including accelerated gestational development. Effects are permanent post 72-hour gestation window.”
The words hung in the air, sharp and clear as broken glass.
Reverses all somatic alterations.
I looked down at myself. At the vast, firm shelves of my breasts, the blue veins like rivers on a map. At the shelf of my ass, the tight, overstretched skin. I felt the hard, pregnant dome of my belly, a life—or something like it—growing at an impossible rate inside me. I thought of the constant, dripping need between my legs, the electric hunger that only their cold, brutal cocks could satisfy.
Nancy started crying softly, her hands cradling her own swollen stomach. “We could… we could go back?”
“Our bodies would reject the… the pregnancies,” Mary stated, her analytical tone belied by the way her fingertips traced the curve of her abdomen. “The document says ‘reverses accelerated gestational development.’ It doesn’t guarantee survival of the… the product. And it would reset our physiology to baseline.”
“Baseline,” Ellie echoed, a strange, hollow laugh escaping her. She looked at her hands, then at the monstrous, perfect swell of her tit. “You mean flat-chested? You mean human?”
Silence descended again, broken only by the distant moans outside. The serum wasn’t just in our tissues; it was in our minds, in our desires. The antidote was a cure for a disease we no longer wanted to be rid of.
I picked up one of the syringes. The amber fluid looked inert, harmless. A way out. A return to aching joints, to menopause, to a body that was failing. A return to a world where Ellie’s warm touch was all I had. I thought of her touch now, electric and desperate, always leading back to the cold, perfect stretch of a monster’s cock.
I put the syringe back in the case. I closed the lid. The click was final.
“We’re not using it,” I said.
A collective exhale. Not of disappointment, but of relief.
Mary nodded, a fierce light in her eyes. “The reverse engineering potential is negligible. The real question is forward progression. The serum in the lockbox… we only assumed one vial was a ‘dose.’ What if multiple vials constitute a phased enhancement?”
Ellie’s artist mind seized it. “Like layers of paint. Building up. Deepening the effect.”
Nancy wiped her tears, a new fascination replacing the fear. “How deep can it go?”
We looked at the lockbox. We looked at Buck and Grunts, their dormant cocks still impressively large, but now familiar. We looked at each other, at the walking, breathing miracles of perverse biology we had become.
“One way to find out,” I said.
We didn’t drink it this time. Mary suggested intramuscular injection for faster, more systemic distribution. We used the syringes meant for the antidote, drawing up two vials of the pearlescent serum each.
The needle piercing my thigh muscle was a faint pinch. Then the fire hit. This wasn’t a spreading warmth. It was an detonation.
A sound tore from my throat, not a scream but a raw, animal bellow. My bones didn’t groan; they shrieked. I watched, detached, as the skin over my breasts stretched with an audible, tight zing. They ballooned outward, not just larger but denser, heavier, rising like relentless dough until they were monolithic spheres, 150ZZ of immovable, granite-firm flesh. They pushed my arms out wide, forcing my back into a deep, involuntary arch. My ass followed, inflating into two vast, perfect hemispheres that dwarfed even my new breasts, a shelf of taut, unyielding flesh.
The gasp beside me was Ellie, her body undergoing the same violent expansion, her blond hair whipping as her head thrashed. Nancy was sobbing, but her hands were clawing at her own new enormities, her face a mask of ecstatic agony. Mary was silent, her eyes wide with clinical shock as her petite frame was utterly consumed by the outrageous curves.
The sense of weight was astronomical. I was a prisoner in a temple of my own flesh. I tried to shift and the effort was Herculean. The pregnant swell of my belly was now a secondary detail, a modest hill beneath the mountain range of my tits.
Then the need hit. It wasn't an ache. It was a tectonic command. Every nerve in my cunt was a live wire screaming for connection, for the only thing that could fill the void the serum had carved.
Buck and Grunts reacted instantly. They surged to their feet, but they didn’t just stand. They changed.
Their groins seemed to tear open with a wet, fibrous sound. Their already massive cocks didn’t just grow; they erupted, lengthening, thickening, becoming obscene pillars of gray, veined flesh. Three feet. Thick as my forearm. The tips glistened, dripping a clear, viscous pre-cum that smelled of ozone and raw earth.
Their eyes, once docile, now glowed with a fierce, primal hunger. The pacification was still there—they weren’t attacking—but the subservience was gone. They were kings, and we were their throne.
“Fuck,” Ellie breathed, the word strained under the weight of her chest. She tried to move towards Buck, but her new proportions made her stumble. She crashed into the workbench, sending tools clattering. Her giant breasts absorbed the impact, jiggling with a minute, firm tremor.
It was all the invitation Buck needed. He crossed the shed in two strides, his new, monstrous cock swaying like a battering ram. He didn’t guide her. He grabbed her by the hips, his fingers digging into the immense, firm swell of her ass, and lifted her as if she weighed nothing. He slammed her back against the metal wall, the impact echoing.
Her legs wrapped around his waist by pure instinct. He didn’t need to aim. He drove forward.
The scream Ellie let out was pure, shattered glass. His new size wasn’t just bigger. It was impossible. The head alone stretched her mercilessly, a brutal, burning invasion. He didn’t stop. He kept pushing, the unbelievable length of him sinking into her, inch by torturous, glorious inch. Her back arched, her colossal breasts crushing against his chest, her pregnant belly pressed between them.
“YES! FUCK! BREAK ME!” she shrieked, her nails clawing at his back.
He bottomed out, his hips meeting the unbelievable shelf of her ass. Then he withdrew, almost entirely, before slamming back in. The wet, meaty thwack of impact was deafening. He set a pace that was less like fucking and more like pile-driving, each thrust a full-body impact that shook the shed’s walls.
Nancy was on her hands and knees, presenting her new, planet-sized ass to Grunts. “Please,” she begged, her voice high and broken. “Please, I need it, I need that monster cock in my filthy cunt!”
Grunts obliged. He didn’t even use his hands. He just aligned the dripping, foot-long tip of his cock with her desperate, weeping entrance and thrust with his hips.
The scream that tore from Nancy was a sound of absolute, perfect ruin. Her body bowed, her giant tits swinging wildly beneath her. He was only a third of the way in. He kept pushing, the sheer girth of him stretching her to a degree that seemed like it must tear her in half. Her cries became guttural, wordless grunts with each inch he claimed.
Mary and I were left facing each other, two titans of need. The logic was gone, burned away in the serum’s fire. There was only hunger.
“The… the wombs,” Mary panted, her words stumbling between gasps. “The stretching… data…”
“Shut up and fuck me,” I growled.
We fell together in a tangle of overwhelming flesh. It was clumsy, absurd. Our giant breasts collided, a firm, unyielding press. My pregnant belly ground against hers. I kissed her, biting her lip, tasting blood. My hand found her cunt, sopping wet and twitching. I shoved my fingers in, but they were pathetic, insignificant. She needed what the monsters had.
We broke apart, understanding without words. We turned, presenting ourselves to Buck and Grunts. They were busy, relentlessly pistoning into Ellie and Nancy.
But we were four. They were two.
A solution presented itself, vile and perfect. As Buck pulled almost entirely out of Ellie, his monstrous length glistening and slick, I lunged. I shoved myself onto him from behind, impaling my dripping cunt on the final, thick third of his shaft.
The sensation was blinding. He was already stretched to Ellie’s limits inside me, a secondary, incredible fullness. Ellie screamed, feeling him move within her as I shifted. Then Buck began to thrust again.
Now he was fucking us both, in tandem. With each drive forward, he plunged deeper into Ellie, then the remaining length buried itself into me. We were a chain of flesh, a circuit of sensation. Ellie’s cries harmonized with my own groans. The slapping sounds multiplied, a wet, rhythmic cacophony.
Mary saw, understood, and acted. As Grunts withdrew from Nancy, Mary took her place, taking the first devastating foot of his length into herself with a choked, glorious shriek. Nancy, still mindless with need, then pushed back onto the remaining length, so they were both speared, one after the other.
The shed became a machine of depravity. The creatures, with their three-foot cocks, fucked through us, into us, connecting us. It was not intimacy. It was a brutal, efficient melding. Our screams blurred into one continuous sound of pleasure-pain. Our bodies, colossal and swollen, jiggled and shook with each powerful thrust. Milk began to spray from our nipples in thin, rhythmic jets with each impact, painting the dirty floor in white arcs.
The orgasms were not peaks, but a continuous plateau. One would crash over me as Buck hilleted himself in Ellie, sending shockwaves through us both. Then another as he filled the emptiness in me. There was no beginning, no end. Just the endless, perfect stretch and the hot, gushing floods that followed, filling our wombs, making our pregnant bellies ache and swell further.
Days melted. The light through the cracks in the walls brightened and faded. We fucked, we drank water, we fucked. We were fucked. Our bodies were never empty. When one creature finished, the other was ready. We switched positions, configurations. They took us from behind, on our backs, lifted us against walls, bent us over the lockbox. Our wombs were endlessly seeded, our stomachs growing steadily, unmistakably harder, larger.