The sack?

I yelped as the gigantic dryad picked me up, and dangled me upside down from an ankle, while it retrieved a bag from her belt. I had half an instant to realize that the bag was bigger on the inside and filled with something shiny and gooey, before my face smacked against said goo and I was sealed in darkness.

My body sank into the cool viscous liquid like a rock. I kicked and struggled, managing to reorient myself thanks to lifetimes of experience in bondage-wiggling. A full lungful of air rewarded my efforts, before a wave of slime washed over me and a current within pulled me deep under.

Struggling to kick myself free, I wasted what little air I’d won. My lungs began to tingle.

And the slime began to move.

Like an omnipresent force, it glued my legs together and pinned my shackled arms against my back. Waves of pressure licked across the length of my body, compressing all around me, until it felt like I was inside a vacuum pack deep underwater.

Burning in my lungs turned to a painful ache. Just as the fear of drowning flashed across my thoughts, the slime poured into my nostrils, mouth, ears, pussy, and ass all at once. 

Cool gooey mass crawled in, more determined to violate my holes than an army of cocks who’d never learned the word no. Ooze filled my nasal cavities, coated my gums and teeth, slid down my throat and into my lungs and stomach. Slippery pressure in my sphincter intensified as slime trickled into my asshole. A gentle stream of slime slipped past my pussy-lips, and despite my urgent protests, continued on into my womb. Heck, it even slipped into my bladder and every teensy hole in my ears, whacking up my sense of balance.

My world felt like it was doing backflips. 

My nose and mouth were stuffed to the point of uncomfortably full. My lungs were bloated by something too heavy to push out. My asshole continued to stretch wider. My pussy kept on spreading. My womb started to hurt from filling up. My tummy stretched. I tried to pee but that only made more slime climb in, worsening the urge to the point of madness. I kept on gagging as my reflexes screamed that I was drowning, despite somehow managing to get oxygen.

The attack of sensations was utterly disorienting, kickstarting the mother of all fight and flee responses.

I screamed against the thick slime-dong in my throat, kicking and struggling inside an oppressively tight cocoon of slime.

Expanding mass in my ass and vagina competed in space, squishing each-other.

I started cumming and kept on climaxing as slime filled me to the point where I feared my stomach might explode.

The damn thing never relented.

One unbearable sensation rolled into another, as my focus shifted. One moment I was dying from the stuffiness filling my head’s crevices. The next I was clenching my legs and wishing against all else that I could pee out the bloated balloon of slime that had made a nest inside me. A moment later, I was spiraling in the darkness again, begging the slime to stop stretching my stomach any further.

It was a never-ending loop.

My only solace was the knowledge that others were enduring the torment with me.

Every now and then I felt slippery bodies brushing against me. Soft bits pressed into me. Gentle pressures rested atop my body. 

In the darkness, my mind’s eye completed the puzzle of entangled limbs, of breasts squished against my face, and of a throbbing futa hard-on rubbing against my thigh. I heard the bubbling, thumping of aroused heartbeats, sloshy slurps, and sliding noises. No moans though. Not a big surprise, considering how the slime suppressed my own noises before my vocal chords could vibrate.

After what felt like an eternity, my climaxes receded to a steady trickle of pleasure and my holes began to grow accustomed to the stretching, the slime became an almost comforting experience. I say almost, ‘cos holy heck that stuffy nose and full to burst bladder were uncomfortable!

Though… well, I can’t say that a part of me didn’t like it.

Sudden and blinding light interrupted the slimy darkness.

Ooze withdrew from me with a loud shluuuuurp.

I, and five other completely naked slave girls of various species, slammed on clean white tiles of a small utility room with closets, sinks, and benches.

An arctic wind of sweet fresh air hit my lungs and gaping ass. My skin felt cool and clean. And, when the last trickle of slime slurped out of my bladder, my insides had become perfectly empty. Relief hit me with the strength of an avalanche. Uncontrollable spasm with shivers followed.

I clutched my pussy and breasts, squeezing to hold onto something real while my brain did backflips of pleasure.

“Velcum to ze Laboratorium of ze Great Murchvoch, vich iz I. I am Dr. Murchvoch.” Even half-blinded, I recognized the silhouette of the mad arcanist who’d bought me. “Und velcum again az ze subjects of ze monster girl breeding experimentations. You can be prideful, yez. Not many slaves get to participate in az big dscoveries as you, of zat you can be certain.”

She checked a device on her wrist and nodded. “Ach. It iz ze time for wörk. Assistant Zlurp vill help you get comfortable. Zlurp, ze physical examination results?”

A voice came from the bag of holding. “A moment, mistress.”

Lime-green slime poured out and flowed straight into a closet. Second later, a tall slime-girl with proportions of a model stepped out. An open lab-coat and white swimsuit drew my attention straight downstairs, where the translucent fabric betrayed the shape of her lips and engorged clit. A throb of purple light snapped my eyes back up to massive globes, behind which floated a dark green core branded with a purple arcane glyph.

The slime-girl tied her gooey glob of a hair into an imitation of a ponytail long and handed Dr. Murchvoch an arcane tablet. “Here you go, mistress.”

“Good. Vi vill speak at later hour, yes?” Dr. Murchvoch turned to mumble to herself, ignored the slime-girl’s reply, and strode out of the room with DT-11 trudging behind her.

“Thank you for good work. No problem, it’s my pleasure,” the slime-girl muttered, glaring at Dr. Murchvoch’s coat.

When she turned to us, her face brightened with a bright corporate-HR smile. “Hi. Hello. Welcome. I hope the examination wasn’t too intense for any of you. My name is Slurp by the way, though I highly doubt many of you will have a need for it after today, given your role as wombs. That’s our official designation for you by the way, not derogatory in any way, just… well, it is what it is. But I digress, here are your… Dr. Murchvoch calls them ‘ze highly womb restraining unitz’ but they’re basically your uniforms. Shimmy into them and we’ll get started.”

Slurp motioned for DT-12 to open a closet full of neatly folded inky-black piles of durlatex.

Only then, as I touched my neck, did I register that the collar and cuffs were gone. Slurp’s acid had corroded all of our restraints.

Heck, she’d even given us all haircuts… Every one of us had been given a short tom-boyish cut of varying styles. Mine was a cheeky rebel look with cheek-long bangs and hair that shortened towards my nape. Honestly, I didn’t mind. It looked hot as hell with the current more slender version of my body.

Nobody protested the orders to dress up and the room was quickly filled with sounds of rubber smacking and stretching. I enjoyed the sight and sensation of sliding my legs into thigh-high stockings and letting the rubber smack against my flesh. After a few idle finger movements around my slit, I continued, pushing my hands into the sleeves of a bolero that qualified as top in name only. It covered my shoulders, neck, and arms, but left everything beneath my collarbones exposed. The outfit was completed by tight little boyshort panties, which, of course, came with a crotch zipper.

True to the moniker of ‘womb restraining unit’, the tiny outfits had enough free-hanging straps and inbuilt buckles to become anything from simple bondage to a reverse straitjacket or a bitchsuit. 

My nethers were already warming with lust of anticipation and starting to stick to my panties. I had an idea of what was about to happen to me, but hadn’t researched all the options to leave myself open to pleasant surprises.

Would they start with body modifications? The branding? What kind of monsters would they make us breed with?

Gods… I was so ready to be bred by dangerously thick monster-cock.

“Great. Fantastic. I’m so thankful for how cooperative you’re all being. Now, pair up.”

I glanced sideways. My eyes met those of a petite pastel-blue oni-girl hugging herself for increased modesty. Her lips pursed in a pensive smile, and I couldn’t help but smile back.

“And now pick who gets to tie up the other. Just the arms.”

Nervous flutters traveled through all of us. I approached the oni as other pairs started whispering awkwardly.

“H-hi.” She brushed hair behind an ear, revealing a filed down horn.

“Heh.” I brushed mine off to show that we matched.

“Heh,” she agreed.

We shared a moment of dumb camraderie. I cleared my throat as her arms began to peel off her chest.

“Ahem. Do you want to be the… or?”

“Ah.” She blinked, glancing away at another pair — a goblin and dragonoid. “I must admit I am unsure as to how to… Could you?” Her cheeks flushed deep blue as she moved her arms to the sides and offered her wrists.

“Sure!” I might’ve sounded a touch too chipper for a cattle slave about to tie up her peer, but hey, it was an opportunity to get handsy with a pervy cutie. “I’m Ion by the way.”

“Toujou Shoraku.”

My breath grew heavier as I stepped behind Toujou, taking her slender arms and guiding them behind her back. “I’ll put you in something comfy…” I glanced at her butt. It was a tight little thing, the very definition of spankable. My fingers kept moving and surprised me by tightening the last strap, before I had time to stop drooling at her body.

Toujou bit down a whimper.

“Oh, sorry. Too tight?”

I’d fixed her in what amounted to a strap box-tie.

Her dark blue nips stiffened as she drew in a raspy inhale. “Nn-o. It is quite fine. T-thank you.”

“My pleasure.”

“Alright. You two, tie each other.” The slime girl pointed at the other two who remained free and took my wrist in a gentle grip. “And I’ll do you.”

I stood still and relaxed, letting my arms be folded behind my back. Goosebumps raced down my spine each time her slippery touch ghosted over my hips and back. My arms ended up in the same, if a little tighter, bind as what I’d given the oni.

While still in progress of uselessly wriggling my arms against the rubbery straps and enjoying my bound state, a bit-gag took my throat by surprise. DT-12’s iron grip closed around my neck and the muscular dryad bent me over her knee.

Staring at something behind me, the oni took a step back. A goblin cursed and the dragonoid swallowed.

“Mfgh?”

A glance over my shoulder made my asshole clench with dread.

“Alright, time to get you all branded.” Slurp hefted a silvery branding iron tipped with a glyph emitting purple glowing fumes. “This one’s just a simple ownership brand, with an inbuilt tracking spell and electric zap for anti tampering and remote punishment.”

My breaths hastened as I felt the heat of the branding iron approach my ass. I let my fears run wild and drum my heartbeat into a race to panic. Hot. It was too hot. What the heck did I sign up for again? What if it’s too much?

I tried to escape, but the grip on the back of my neck intensified. Strong fingers pressed the back of my thighs, holding my booty up. I stared at the approaching iron, whimpering and pleading up till the point where the heat transformed into a flash of smoldering pain.

My ass sizzled.

I screamed, biting hard on my gag.

Root-like arms suppressed my trashing entirely, holding me in place as the arcane pain seared through my flesh and branded a permanent mark on my flesh. It hurt so. Damn. Much. I tasted copper on my tongue. 

“Shhh… Shhh… little womb. You’re doing great. Just a few more seconds.” Purple glow flashed on the iron and magic flooded through the freshly burned brand.

My vision blurred with white from the pain.

Next thing I knew, I was laying on my stomach, catching my breath next to two other slave girls, while the goblin was getting her slave brand.

Pain continued to pulse on my left ass-cheek.

Moany cries continued to roll out with my exhales. My cheeks burned with tears. I just lay there uselessly, marinating in the misery and degradation of the situation, until Slurp ordered us to stand.

“I must apologize in advance, but this is for demonstrating purposes on Dr. Murchvoch’s insistence. Sometimes, if you disobey, and there is no time for full disciplining action, the staff members may use your brands as quick punishment, like so.” The core in her body glowed with a purple brand that matched ours.

Then ours resonated with the glow.

Electricity flooded my body, locking up my legs. We screamed, rolling into helplessly sobbing balls.

Endorphins rushed in to fizz out all non-horny thoughts from my brain. The fact that I was now a young nubile cattle slave, bound, permanently branded, and about to be abused, hit me like an unlubed dragon-cock in the anus.

I sold myself to this.

Next ten gosh damn years.

Shit. Shit shit shit. They’re going to fuck me up bad.

The thought alone made my clit hard. I couldn’t wait to be messed up beyond recognition.

“There. So, make sure to behave, alright?” Slurp helped the girl closest to her stand. “Now come on up. Let’s get you a tour of the house and get you settled in.”