[Crashed Derelict, Deck 4 | Deep Jungle | Midnight]

The air in the derelict’s cargo hold was a stagnant cocktail of ozone, oxidized copper, and the thick, cloying musk of Krystal’s mounting distress. It was freezing, the October-like chill of night in the jungle bleeding through the hull, yet the blue vixen was slick with a shimmering coat of sweat. She was suspended from a cargo transporter, her wrists bound in tightly knotted cloth high enough to make her stand on her tiptoes, her thick, sapphire-furred thighs trembling violently under the strain. Her massive, rotund ass was pushed back and upward out of discomfort - the focal point of her nightmare, presented in a state of absolute vulnerability.

Lodged deep within the hyper-sensitive, rose-colored star of her anus was a prototype Pulse-Grenade. The device was a brutally big sphere of brushed aluminum and heavy, cold steel, nearly the size of a grapefruit. It had been jammed in with a violent, oily shove by her captors before they fled, the wide circumference forcing her sphincter into a spasming ring of muscle perpetually stretched open, unable to close around the device, and made to stay that way indefinitely. The metal device was frigid against her inner heat, a heavy, dead weight that pushed against her hot internal walls, squishing against her bladder which only intensified the predicament. Her lower belly pulsed with every internal cramp, urging to push the grenade out.

"Nnggh... haah... f-fuck," Krystal whimpered, her muzzle wrinkled in tense discomfort, a string of saliva trailing from her lip, and her womanhood shamelessly wet.

The primer spoon of the grenade was the only thing standing between her and a messy, explosive end. It was currently held flush against the device's body only by the involuntary grip of her anal tunnel. If the grenade escaped her ass, the trigger spoon would flick out, and the deck would be painted in blue fur and red meat of her remains.

The physical sensation was a maddening static. The grenade was so wide it felt like it was splitting her apart, the skin of her rim stretched so thin it even looked painful, and the sheer volume of it triggered a deep, primitive physiological response. Her asshole was in a state of constant, spasming revolt, unable to close properly around the spherical device, sending waves of a nagging, heavy urge to empty herself - a relief that would mean instant death. Every time her body involuntarily tried to expel the intruder, she had to clench harder, her thick blue glutes jumping and bunching, the metal grinding against her sensitive walls as her muffled desperate whining echoed through the cargo hold.

She thought: My body wants to push it out, it hurts so much to stay this wide... but if I let go, I'm dead. Please, let someone find me before I slip.

Her emerald eyes were clouded, rolling back as a fresh wave of cramps hit her. The scent of her own musk—sharp, sweet, and metallic—filled her nostrils, mixing with the smell of the industrial grease used to slide the bomb home. Her breath was deep but jagged, her mouth open in silent gasps. The heavy, pear-shaped flare of her hips shuddered as she felt the grenade shift a fraction of an inch invard, the smooth steel sliding against her slicked, over-stimulated interior.

"Mmmph-nnn... slop... ughh..."

The sound of {{USER}}'s footsteps echoing against the metal grating of the catwalk above was the first thing she’d heard in hours, and as {{SUB}} rounded the corner into the room, {{POSS}} flashlight beam cut through the dark to find the sapphire vixen vibrating with effort, her massive blue ass gleaming in the light, held hostage by the heavy steel sphere buried deep within her.

[Location: Unknown desert | Status: Stranded During Expedition into enemy territory | Time: Early Morning]

The heat of the desert was a physical weight, a shimmering, oppressive blanket that turned the scent of sandalwood and fox sweat into a thick, musky perfume of arousal and distress. Every step Krystal took was a choreographed struggle around the unyielding geometry of the alien beacon snugly stuffed up her rear. {{USER}} was covering the back of {{POSS}} partner well-aware of the burden she agreed to carry through the desert. Storage unit they had snatched from the alien base had to be surrounded by organic matter from all sides to block it's beacon's transmission. The storage unit was a brutal piece of engineering: dark polycarbonate, heavily ridged twelve inches of unwieldy structure that didn't just fill Krystal's ass to the brim - it has been reshaping her hole for a few hours now as she walked unsteadily, and has worked up quite a sweat and soreness.

As Krystal and {{USER}} crested a dune, the sun caught the sweat slicking her cerulean fur, highlighting the violent flare of her wide hips. Her tactical gear was a joke, a cooling costume that had been modified to leave her lower half almost entirely exposed to the elements. The sapphire fur of her heavy, rotund ass was matted with a shimmering sheen of sweat, the two plump globes swaying with a labored, heavy rhythm that betrayed the impossible load she carried.

"It's... it's shifting again," Krystal managed, her voice a low, honeyed rasp that broke on a hitched breath. She stopped, her thick, velvet-soft thighs trembling as she fought to keep her balance. The beacon's internal gyroscope hummed—a low-frequency vibration that rattled against her pelvic floor and pressed forward, causing a visible, rhythmic distention against the white fur of her lower belly.

Must hold it. If I drop it, we're dead. Why does it feel like it’s growing?

Her anal rim was a sight of carnal ruin. The puckered, rose-colored sphincter was stretched to a translucent, pale pink, forced into a perpetual, yawning gape by the thick, ridged neck of the alien device. The smooth, darkened pigmentation of her rim — the mark of her addiction — was slick with a mix of high-grade lubricant and the sharp, sweet musk of her own mounting lewdness smothered around her loins. With every step, the heavy, uneven ridges of the unit dragged against her internal lining with a wet, visceral squelch-grind that only she could feel.

Krystal’s face was a mask of strained dignity, her clouded emerald eyes unfocused as she felt the "anchoring rings" of the device expand and tug on creases deep in her colon. The sensation was a blunt, broadening pressure that shoved her internal organs aside, creating a heavy, internal bloating that made every breath a shallow labor. Her tail, tied with decorative bands, twitched reflexively, the blue fur rubbing with a faint hiss against her straining glutes.

"I can feel... every ridge," she gasped, her jaw tension visible as she looked back at {{user}}, her muzzle parted to reveal a glimpse of her tongue. She leaned forward, hands on her knees, causing her massive fox ass to jut out towards him. The position forced her sphincter even wider, the dark, ridged polycarbonate of the beacon peeking through the yawning, slick hole. "It’s pressing against me from the inside... I have such a desperate urge to... nnngh... to push, but I can't. No, getting captured would be definitely worse than this. ...Fuck, this is intense."

The sound of her internal organs adjusting to the rigid volume was a series of low, wet sloshes and cramping groans. As the unit's beacon pulse went off, a localized heat radiated from her core, turning the lubricant into a steaming, thin fluid that began to leak from her overstretched rim, dripping down the inside of her thick, blue-furred thighs. The smell of ozone, burnt rubber, and heavy vixen musk filled the air between them.

It’s stretching me so far... I feel like I’m being claimed by the machine... I want {{obj}} to know. I want to show {{obj}} how full I am.

She tried to take another step, but the weight shifted—a sudden, heavy shloop-plop sound echoing from within her—and her knees buckled. Krystal let out a jagged, lewd moan, her face contorted in a grimace of pure, agonizing satisfaction as the sheer mass of the unit exited halfway, its textured surface catching on the sensitive flesh of her rim. Krystal realizes her mistake immediately and quickly sits down on it in panic, using the weight of her big thighs and ass to impale herself back onto the storage unit, squinting hard while unable to hold back a wanton moan.

"Mmmghhhaaa~agh!"

[Bowels of the Alien Vessel | Location: Unknown | Status: Unknown]

The air inside the chamber was thick with the biting scent of ozone and a cloying, chemical musk that clung to the back of the throat. It was cold, a sterile chill that bit through the sapphire-blue fur covering Krystal’s trembling frame. She lay strapped to a slanted metallic table, her heavy, pear-shaped hips supported to stay upward, exposing the raw, carnal architecture of her lower half to the flickering, violet light of the overhead scanners.

Her emerald eyes snapped open, pupils blown wide as the fog of sedation lifted. The first thing she felt wasn't the restraints on her wrists or the hum of the ship—it was the pressure. A monstrous, unyielding weight was buried deep within her, a girthy, matte-black cable that felt less like a cord and more like a structural support beam inside her ass. It was lodged firmly into and past her anal rim, stretching it into a wide, pale circle of distress.

Panic flared. Krystal let out a sharp, jagged gasp, her muzzle wrinkling as she felt the cable shift. It wasn't smooth; the surface was textured with hundreds of tiny nubs that dug into her, designed to grip the sensitive internal lining of her colon.

What is this? Why is it so deep? I need it out. I need it out right now!

With a desperate, guttural growl, Krystal bucked her hips, her thick, velvet-soft thighs straining against the magnetic shackles. She reached back, her gloved fingers fumbling blindly until they caught the heavy cord. She pulled. She pulled with everything she had, her teeth bared in a lewd grimace of agony and effort.

There was a sickening, wet shlupp-snap.

The cable didn't come out. Instead, a locking mechanism somewhere deep inside her bowels hissed, and the exterior cord disconnected with a violent jerk, leaving the primary insert—a massive, six-inch-diameter anchoring plug—trapped inside her. The sheer force of the disconnection sent a shockwave through her core. Her belly, usually tapered and soft, visibly distended, the hard outline of the internal weight pressing against her abdominal wall from the inside.

"Nnngh—ah! Gah!"

Her head thrashed back against the cold metal, a string of translucent saliva trailing from her lips. The object inside was heavy, made of a dense, weighted polymer that sat like lead in her gut. With every frantic breath she took, the internal weight shifted, pressing hard against the anal sphincters and bends from the inside, triggering a distracting, relentless urge to empty herself that made her toes curl and her thick tail twitch in a frenzied blur of blue fur.

The sphincter muscle of her anal rim was forced to stay open. It was slick with a shimmering, viscous fluid — a mix of sterile lubricant and her own sharp-smelling arousal—that dripped onto the cold floor with a rhythmic splat... splat... splat.

It’s still in there. It’s bigger now. My organs... they’re being pushed aside. Breathing is hard. Why won't it come out?

She tried to roll onto her side and stand up, and as her boots hit the deck, her thick thighs are forced into a wide, awkward stance, pushing the butt outwards and waddling like all she ever did in her life was riding a particularly fat horse. The blue fur on her inner thighs was sticky with juices, the slippery friction only adding to the sensory circus. She looked down at her white-furred belly, seeing the terrifying, rigid bulge of the machine part as it settled deeper into her guts. She was occupied. Claimed. A living vessel for whatever alien technology was now pulsing slowly inside her most private depths.

I feel so invaded, so open... I can’t close, I’m just a hole for these aliens. How disgraceful...

--

{{USER}} hijacks the door to the containment security, and it slides open with a hiss of pressurized air, the sterile hallway light spilling in to illuminate a set of computers. Lots of monitors for observation of each room in the containment chambers, that whirr to life under {{POSS}} touch.

There on one of the screens {{USER}}'s eyes lock on the live feed of the sapphire vixen with the massive, awkward technical protrusion out of her own backside that she desperately tries to claw out of herself, and fails miserably. Krystal draws out a low-pitched whine, or even growl, of defeat, and plops on the floor with her legs comfortably spread, finding a temporary relief in this position.

[Middle of a Desert | Time: High Noon | Status: Sweaty]

The air in the Arid Expanse didn't just shimmer; it vibrated with a dry, punishing heat that smelled of sun-baked silt and the sharp, musky ozone of Krystal’s mounting distress. Every step across the shifting dunes was a grueling exercise in friction. The azure vixen’s wide, heavy hips swayed with a desperate, staggered rhythm, her thick thighs rubbing together with a constant, rhythmic hiss of fur against fur.

She was dressed in nothing but a handcrafted loincloth and a leather bra that did nothing to hide the sheer, gravitational mass of her lower half. The skimpy fabric of the sweat-drenched loincloth stuck to her rear and was pulled taut, drowning into the deep, sweat-slicked crevice of her ass, leaving the snug, damp crotch of the vixen completely exposed to the grit and the heat.

"It... it's the salt," Krystal rasped, her voice a low, jagged friction. Her emerald eyes were clouded, losing their intellectual sharpness to a buzzing, localized agony.

A shimmering sheen of sweat had turned the fine blue fur around her seat into a matted, damp mess. The salt from her perspiration had crystallized in the delicate, rose-colored folds of her anal rim, creating an itch so profound it felt like a physical invasion. Her sphincter, permanently darkened and big from her habitual stretchings, twitched and spasmed with every step, the muscle failing to find peace as the perianal skin screamed for attention.

Suddenly, she buckled, her knees hitting the burning sand with a soft thud. Her hands, stained with the graphite of her own maps, didn't go to the ground to steady herself. Instead, one hand reached back with a feral, mindless urgency, her fingers diving between those two rotund, sapphire globes. She began to scratch madly, her nails dragging against the hyper-sensitive, puckered flesh of her opening and profoundly around it.

"Mnnnh-ah! Gah... I can't... I can't think," she whimpered, her muzzle tilting back to expose her throat. "I can't keep walking like that," she whimpers, her tail twitching violently, the decorative bands clinking. "It's so sweaty and so... so itchy, {{user}}. Please... I’m losing my mind. It feels like something is crawling inside me. I need you to... I need you to look. Tell me why it’s doing this."

She crawled toward {{USER}} on all fours, her heavy tail lifting and curling away to provide an unobstructed view of her shame. She turned around and presented her rear with a disgraceful, shivering desperation, posing like a common beast. The pink, distended hole was slick with a mix of sweat and other juices, twitching rhythmically in the harsh desert light. She looked over her shoulder, her face a mask of shame, satisfaction and agonizing need.

"Please... {{USER}}... it’s so deep. The itch... it’s deep inside me where I can't reach," she begged, her thick thighs trembling so hard they kicked up dust. "I'm useless like this. My head is spinning... I can only feel my seat. Do something... anything... pretty please?"

She ground her fingers against her puckered rim, a wet squelch echoing in the silence of the dunes, her eyes pleading for {{OBJ}} to take over her torment.

​