Chapter 7: Preparing the Beast's Den
The heat between them was a live thing, a shared fever burning through sweat-slicked skin. Poppy’s partial knot had subsided, leaving them spent and tangled on the cool kitchen floor. But the respite was brittle, false. Viv could feel the tension returning to the heavy muscles under her hands, a gathering storm.
Poppy’s breathing, which had just begun to slow, hitched. A full-body shudder wracked her frame, so violent it was as if something deep inside her was tearing loose.
“It’s starting,” Poppy gasped, pushing herself up on trembling arms. Her eyes, when they met Viv’s, were wide with a feral panic. “The real start. You need to go. Or stay. But if you stay, you go in the room. Now.”
Viv stood, her legs unsteady. She looked at the hallway that led to the spare room, then back at Poppy, who was curling in on herself, a low whine building in her throat. The choice wasn’t a choice at all.
“Show me,” Viv said, her voice quiet but clear.
What followed was a grim, silent ritual. Poppy led her to a plain steel door set in the back hallway. She opened it to reveal a concrete cell, about ten feet square. A single, stained mattress lay in the center. A drain was set in the floor. The air was still and stale. On the wall outside, a heavy deadbolt lock was mounted.
“The lock,” Poppy said, her words starting to slur, as if her mouth was forgetting its shape. “You throw it. Once it’s past… once I’m gone, you do not open it. No matter what you hear. No matter what I… it says.”
Viv nodded, memorizing the space. A tomb. A cage.
Poppy’s hands went to the waistband of her sweats, but her fingers, thickening and darkening at the nails, fumbled. Viv stepped forward and gently pushed them away. She hooked her own fingers into the fabric and peeled it down Poppy’s legs, along with her underwear. Then she removed her own clothes, folding them with deliberate, calm movements on a wooden chair outside the door. The mundane action felt sacred, a final anchor to a world of order.
Naked, she turned back to Poppy, who was watching her with a look of awe and devastation. Viv took her hot, trembling hand and led her into the room. She lay back on the thin mattress, the rough fabric scratching her skin, and opened her legs.
“Come here,” Viv said.
Poppy crawled to her, movements becoming less graceful, more disjointed. Her breathing was ragged, panting. The changes were accelerating. The coarse hair on her limbs was spreading, coarser and darker. Her jaw seemed heavier. And her cock, still jutting thick and proud from its thatch of dark curls, looked even more inhuman—veins pulsing under skin that was hot to the touch, the head a deep, angry purple, leaking a steady pearl of fluid onto Viv’s thigh.
“I need… to feel you,” Poppy rasped, the words guttural. “One last time. As me.”
She positioned herself, her weight settling over Viv. The broad, slick head of her cock nudged against Viv’s entrance, which was already wet, her body responding to the terrifying, electric energy pouring off the woman above her.
“I’m here,” Viv whispered, reaching up to touch Poppy’s face. The bone structure felt different, shifting under her palm.
Poppy pushed in.
There was no slow burn, no teasing progression. It was a single, devastating claim. Viv cried out, her back arching off the mattress as she was speared open, filled to a breathtaking degree. Poppy was bigger, so much bigger than before, the stretch a sharp, bright pain that melted instantly into a pleasure so profound it felt like dying.
Poppy didn’t wait for her to adjust. A raw, ragged sound tore from her throat, and she began to fuck. It was a mindless, piston-driven rhythm, each withdrawal an agony of loss, each deep, slamming return a homecoming. The wet, meaty sound of their joining echoed off the concrete walls. Poppy’s hips snapped forward with a force that jolted Viv up the mattress, her hands scrabbling for purchase on Poppy’s heaving back, finding skin, then coarse fur.
“Fuck, yes, your cunt,” Poppy growled, her voice deepening, roughening. “So tight. Taking all of me. Gonna fill you. Gonna fucking breed you.”
The obscene words, spoken in that half-changed voice, sparked something primal in Viv. She wrapped her legs around Poppy’s thickening waist, heels digging into the small of her back, pulling her deeper. “Do it,” she choked out. “Come on. Give it to me.”
Poppy’s rhythm fractured into something even more frantic, more desperate. Her thrusts lost any semblance of grace, becoming brutal, jerking drives. Viv could feel the telltale swell begin at the base of her cock, that impossible thickening. It stretched her wider, a burning, glorious pressure with every inward plunge.
“Viv… I’m… I can’t hold–” Poppy’s sentence dissolved into a snarl.
The knot expanded, a sudden, fierce bulb of flesh that locked them together. Poppy slammed home one final, seismic time, hilting herself completely as the knot sealed inside Viv with a wet, popping sensation.
Poppy threw her head back and howled.
It wasn’t a human sound. It was a raw, broken, triumphant noise that vibrated in Viv’s bones and seemed to shake the very concrete. Viv felt the hot, violent pulse of Poppy’s release, jet after jet flooding her depths, a seemingly endless torrent. The sensation triggered her own climax, a silent, shattering wave that clenched her around the invading thickness, milking it, pulling more of that hot seed from Poppy’s shuddering body.
They were locked, trembling, a circuit of frantic sensation. Poppy collapsed forward, her face burying in the crook of Viv’s neck. Her breathing was a wet, ragged pant. Viv could feel the changes happening against her skin now—the subtle crunch of cartilage, the pop of tendons realigning. The smell of wild musk and hot copper was overwhelming.
The knot held for long, stretched minutes, binding them in the aftermath. When it finally began to soften, Poppy slipped out with a gush of fluid. She rolled off Viv, onto her side, curling into a fetal position on the stained mattress.
Viv propped herself up on an elbow. Poppy was trembling violently, her skin slick with sweat. Whimpers escaped her clenched teeth. Her spine seemed to be elongating, vertebrae pressing against skin in a row of painful-looking peaks.
“Poppy?” Viv whispered.
Poppy’s head turned. Her eyes, when they opened, were pure, molten gold. No brown, no white. Just a lioness-gold, pupils dilated into black pits. There was no recognition in them. Only a feverish, animal hunger.
“Out,” the thing that was Poppy snarled, the word barely decipherable. “Get out. Now.”
Viv didn’t hesitate. She scrambled to her feet, her body aching, slick with their mingled fluids. She backed toward the door, her eyes never leaving the figure on the mattress. Poppy—or what was left of her—was convulsing, her limbs twisting at wrong angles. A sickening series of pops and crunches filled the small room, the sound of bones breaking and re-knitting.
Viv reached the doorway. Her hand found the cold steel of the door.
Poppy’s body arched off the mattress, a silent scream contorting her face. Black claws erupted from her fingertips, scrabbling against the concrete floor. A thick, dark pelt was rippling over her skin, swallowing the olive tone. Her face elongated, teeth lengthening into yellowed fangs.
Their eyes met one last time. In that golden, monstrous gaze, Viv saw a final, fleeting flicker of the woman—a flash of pure, unadulterated terror.
Then it was gone, swallowed by the beast.
Viv stumbled out, pulling the heavy door shut behind her. The click of the lock engaging was the loudest sound she had ever heard.
Silence for a heartbeat.
Then a sound from the other side of the steel. A low, wet, peeling snarl that was nothing Poppy could ever make. It was followed by a heavy, padding step. Then another.
Something massive slammed against the door from the inside. The steel groaned. The deadbolt held.
The deadbolt held.For hours, Viv listened.
The sounds from the other side of the steel door were not the organized chaos of Poppy’s workshop. They were the sounds of a contained typhoon.A thick, guttural panting. The scrape of something hard dragging across concrete. The wet smack of a muzzle against the door, followed by a low, frustrated rumble that Viv felt in her teeth.
She sat against the hallway wall, wrapped in a blanket from Poppy’s couch, knees drawn to her chest. She marked the passage of time by the deepening silence from the world outside the apartment and the rhythmic, aching throb between her own legs. Her body was a map of the night—dried come on her thighs, the ghost stretch of the knot, bite marks purpling on her neck.
The pragmatist in her, the archivist, should have been cataloguing terror.Instead, she catalogued fascination. The bone-deep curiosity that had pulled her towards forbidden texts and hidden histories now held her pinned to this spot, listening to a monster breathe.She had touched the transformation.She had taken it inside her.
A sudden, absolute quiet fell from the other room.The panting stopped.The scraping ceased. Viv held her own breath, her ears straining.Minutes stretched, thin and taut.
Then, a sound so human it felt like a blade.A soft, broken whimper.Without conscious decision, Viv stood. The blanket pooled at her feet.Her hand, cold and trembling, went to the deadbolt. Poppy’s voice, ragged with warning, echoed in her memory.You do not open it. No matter what you hear.But this wasn’t a roar.This was a sob.
She slid the bolt back.The click was deafening in the hush. She pushed the heavy door open, just a crack, and peered into the gloom.
The room smelled of hot fur, of iron, of sex and wildness. The dim light from the hallway sliced across the concrete floor, illuminating the form on the mattress.
Viv stepped inside, naked, the cool air raising goosebumps on her spent skin.Poppy was on her side, facing the door. Her eyes, wide and lucid and utterly human in their amber-brown distress, locked onto Viv’s. They swam with a pain that had nothing to do with physics.But the rest…
Viv’s breath caught. Poppy’s body was a brutal, breathtaking paradox. The powerful lines of her torso and the swell of her breasts were still there, softened by a layer of coarse, dark pelt that shimmered in the low light.It traced the curve of her spine, tapered over her hips. Her legs, bent at an awkward angle, were thicker, the musculature rearranged, hinting at a different kind of locomotion.
But it was her hands—or where her hands should be—that Viv couldn’t stop staring at.Resting on the mattress were powerful, black-padded paws. Long, vicious claws, still caked with fine concrete dust from where they had scraped the walls, extended from the digits.They twitched slightly, a reflexive curl.
And between her legs…
The thatch of dark curls was gone, replaced by smoother skin and short fur. But her cock, though no longer at its fullest, fevered swell, was still there. It lay thick and heavy against her inner thigh, semi-erect and glistening with a different, muskier wetness. The engorged head, a deep reddish-purple, pulsed faintly. Below it, Viv could see the slit of her cunt, pink and exposed, slick with her own need.
“You… shouldn’t be in here,” Poppy whispered, her voice a hoarse ruin. The human words from this altered mouth were surreal. “Not safe.”
“You called me back,” Viv said softly, stepping closer.She wasn’t sure it was true, but it felt true. The whimper had been a summons.
“I didn’t mean to.” Poppy’s eyes closed, a tear tracing a clean line through the dust on her cheek.“It’s… receding. But not gone.The heat is still in me.It’s just… quieter. It aches.”
Viv knelt on the mattress beside her.The air was electric, thick with pheromones and aftermath. Her own body, traitorous and curious, responded. A fresh trickle of warmth gathered between her legs. She reached out, her fingers hesitating just above the pelt on Poppy’s shoulder.“Can I touch you?”
A shudder ran through Poppy’s frame. “Yes,” she breathed, the word a plea.Viv’s fingertips made contact. The fur was softer than she expected, dense and warm over rock-hard muscle. She let her hand stroke down Poppy’s arm, towards the monstrously beautiful paw.She didn’t touch the claws.
Poppy’s cock gave a distinct, interested twitch.
“See?” Poppy said, her voice thick with shame and longing.“It’s still a fucking animal. It doesn’t care about… about any of this.” She gestured weakly at her own face, her human eyes.
“I care,” Viv said. Her hand slid lower, over the tight curve of Poppy’s hip, through the short fur of her thigh. She didn’t stop until her fingers were a breath away from that thick, heated length.Poppy’s breath hitched. A low, rumbling sound, not quite a growl, vibrated in her chest. “Viv…”
“You’re in there,” Viv murmured, her own pulse hammering in her throat. “And I’m in here.” Her fingers finally made contact, wrapping around the base of Poppy’s cock.It was searing hot, the skin like velvet over steel. A bead of clear fluid welled at the tip.
Poppy’s paw-hand came up, awkward but terrifyingly gentle, and cupped Viv’s cheek.The pads were rough, the claws carefully sheathed. “You’re insane.”
“I’m curious,” Viv corrected, leaning into the touch. She shifted her body, swinging a leg over Poppy’s hips, straddling her but not yet lowering herself.The head of Poppy’s cock pressed against her wet, exposed folds. “Tell me what you need.”
“You,” Poppy gasped, her hips giving an involuntary upward jerk. “Just you.Any part.All of it.”
Viv guided her, sinking down slowly. The stretch was different this time—not the shocking invasion of the knot, but a deep, full, aching possession. Poppy was still noticeably thicker, the sensation of her pushing inside both strange and profoundly familiar.Viv took her all, until their bodies met, fur against skin.
“Fuck,” Poppy moaned, her head falling back. Her claws dug into the mattress, shredding the fabric with a terrible, ripping sound.
Viv began to move, a slow, rolling grind of her hips. The angle was intense, the full, dragging pressure of Poppy’s cock lighting up every nerve. She braced her hands on Poppy’s shoulders, her fingers tangling in the dense fur.Poppy’s control was fraying. Her human eyes were glazing over, the gold beginning to bleed back in at the edges. Her hips started to piston upwards, matching Viv’s rhythm with increasing ferocity.The wet slap of skin and fur filled the small room.
“Yeah, take it, take my cock,” Poppy snarled, her voice dropping, coarsening. Her paw-hand moved from the mattress to Viv’s hip, the claws pricking but not breaking the skin, holding her in place for a deeper, harder thrust. “Your cunt’s so good. So perfect and tight for me.”
The filthy words, spoken in that half-changed voice, destroyed Viv.Her orgasm built quickly, a coiling, inevitable snap. She rode Poppy harder, chasing the friction, the perfect, brutal fullness.
“I’m gonna come,” Viv panted. “Poppy, I’m—”
Poppy’s other paw clenched around the back of Viv’s neck, pulling her down into a kiss. It was desperate and awkward, teeth and tongue and a hint of fang. Then Poppy broke away, her body bowing beneath Viv.“Come on me,” she commanded, her voice a raw, ragged thing. “Soak my fucking cock.”
The command, the possession, the sheer impossible reality of it tipped Viv over the edge. She cried out, her inner walls clamping down in rhythmic, vice-like pulses around the thick shaft inside her.The pleasure was blinding, wiping out every coherent thought.
Feeling Viv convulse around her was the final trigger. Poppy’s transformation surged back, not fully, but enough.A deep, guttural roar was torn from her as she came. Her clawed hands locked around Viv’s hips, holding her immobile as hot pulses of release flooded Viv’s core.
They collapsed together, a tangled heap of human and something else, both breathing in shattered gasps. Poppy’s cock, still semi-hard, slipped from Viv’s body with a soft, wet sound.
Viv lay her head on Poppy’s chest, the fur there damp with sweat. She could hear the frantic beat of Poppy’s heart slowing, could feel the subtle shift in the body beneath her as the pelt began to recede, melting back into skin.
After a long while, Poppy’s human hand—her fully human hand—came up to stroke Viv’s short hair.The claws were gone. “The moon’s setting,” Poppy whispered, her voice exhausted, utterly her own.
Viv didn’t look at the bricked-up window. She kept her ear pressed to Poppy’s chest, listening to the steady, human rhythm within.“I know,” she said.
She knew she should get up, clean up, return to her own apartment and its quiet, ordered solitude. But the curiosity that had glued her to the hallway floor now held her here, in the wreckage of the mattress. The archivist had found a primary source, a living, breathing, terrifying document. She wasn’t done reading.Outside, the sky began to lighten from black to deep blue. The beast was gone, for now. But the woman who housed it was trembling beneath her, and Viv, for the first time in her life, didn’t want to be anywhere else.