Melty Mercury from Outer Space: Chapter 12

 Summary: Nikki is taken over by an extraterrestrial symbiote that changes her into a metal slime girl. While this comes with great power, she's unsure if she can control herself, or handle the extra baggage that comes with it.

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Melty Mercury from Outer Space

CHAPTER 12

Upstairs upstairs upstairs gotta go gotta go gotta go now...!

Nikki could feel her entire body pulsating madly as an overwhelming feeling of desire clouded her mind. She had tried her best to stay cool, but as soon as she turned the corner, as soon as she was in the relative privacy the building afforded her, she immediately broke into a sprint to her apartment. At least she knew Brad couldn't see her. 

She charged for the stairwell, her heavy footsteps echoing up to the high ceiling. With every step she took, she could feel her body shifting, writhing in an unfamiliar sense. Her weight shifted in strange ways, her hair hovering behind her like tendrils.

It'll be fine, she reassured herself as she powered her way up a flight of stairs, her legs reaching two to three steps at a time, and prepared to 180 to the next. Just a few more flights of stairs, and then the apartment is a little down the hall. Not far at all. So long as she didn't trip over herself...

CLANG!

But in her haste, she made a critical error: as she gripped the handrail and tried to pull herself forward, the entire metal railing simply tore off, causing Nikki to collapse in a heap into the far wall. She could feel a large part of her body simply flatten against the wall; she could feel her backpack, which was supposed to be her cushion, pressed against the wall; she could feel the bricks in the wall, their rough texture pressing into her pliable form.

She took a shaky, unsteady breath, her eyelashes fluttering. Unbeknownst to her, her eyes briefly flashed the familiar, alien blue. With a few cursory blinks, and still riding her adrenaline high, she stumbled back onto her feet, ignoring the clattering of the handrail's bars behind her. 

She swung the door open into the hallway, scrambling to her door. She fumbled for her keys...

"Where are they, where'd I put them..." Nikki at the very least brought a waist pack, which she was feverishly unzipping to get at their contents. She felt the keys!

Squish.

Dread arose to her face. She didn't have to see her hand to realize what had happened just beyond the unzipped flaps. Her hand deformed into that familiar ooze, enveloping her keys like they were nothing. Her eyes lowered, feeling the silvery pigment creeping up her wrist.

"C-Crap!" Nikki blustered, trying to shove more of her wrist into the pack to hide the shimmering colours. She slumped to the floor, her crotch pressing against the carpet. It was like she wasn't wearing anything at all down there; the texture was intimately creeping through her. In the corner of her eyes, she could see the silvery sheen creeping along her thighs.

"N-Not here..." She bit her lip, trying to control her emotions. "J-Just need to get inside..."

She dug in deep, feeling one of her twintails rising on their own. Now at eye level with the lock, she studied the lock. She had to think quickly. 

As if upon reflex, her free right hand rose, something forming within her palm. In mere moments, her body reformed the key and she went through the practiced motion of unlocking the door, catching a glimpse of the key as she inserted it into the lock. As soon as she was done with it, the key sunk back into her palm as she raised it towards the handle.

Kchunk! Swinging the door open, Nikki hurried inside, crawling on all fours as quickly as she could. She paused inside to catch her breath, one of her twintails rising to close the door behind her...

Clunk. There was something in the way, stopping the door from closing all of the way. Nikki glanced behind her...

"Oh come on!" Nikki blurted, her eyes widening. One of her twintails had coiled around the section of the staircase railing that she had torn off moments prior. Cursing under her breath at how shoddily things were built here, she raised a hand—now completely silver—to tug at the twintail that had been stretched taut, noisily dragging the metal section of rails into the room before emphatically slamming the door. 

"Ugh... fuck meee..." Nikki muttered under her breath, her head slumping forward. The electric sensation with her was dominating, and she couldn't keep her head on straight. She had been trying to keep herself together, tightly bound and compressed, for hours and hours. She was quickly reaching her breaking point. 

All at once, her humanlike features drained of colour, as if a switch had been flipped. Her clothes desaturated, sinking back into her viscous body mass. She moaned as the heavy weight of her backpack slowly crept down her back, an enormous blob of alien matter sliding down like a glob of paint on a canvas, content to pile onto the floor. 

A sinking feeling came over Nikki; she could feel herself descending, melting into a formless mass as a puddle of liquid ooze crept along the floor all around her. Kneeling down, her legs and thighs were quickly losing mass.

"Nn-" Nikki grunted, biting her lip as she felt something long and hard penetrate her backside; the tendril was still working to pull the handrail into her center. The puddle around the long section of railing vibrated, shifted, and wrapped around the pole, gently coaxing it deeper inside of her as it pressed into where her tailbone would have been. Her ass was accentuated, her hips widened as she slumped against the floor. 

She rocked her hips, easing the shaft in deeper, willing it to become a part of her. She wanted to be more, she wanted to be bigger. In the corner of her eyes, she could see, feel more tendrils of slime rising from the puddle—four at least—swaying and twisting as if looking for more things to reach out to, to bring inside of her. 

The feeling of assimilation. She had been having cravings all day, and she could only get so far to keep her in the back of her mind. But she needed a release, and she needed it now. 

"Angh!~" Nikki moaned, arching her back as she raised her chest, hugging herself. The room began to spin as her torso elongated on its own, gaining feet upon feet as she rose up like a snake. Continuing to arch her back, she was ecstatic, oblivious as her head tilted upwards, nearly brushing with the light fixture above her head as her torso performed a loop-de-loop. And her body continued to stretch along the floor. The tendrils tensed and writhed along with her, the glut of sensory overload threatening to take over her fragile human mind...

Knock knock knock.

And then Nikki froze, her face awkward smooshed into a nearby floorboard. Someone was at the door. She wasn't alone. She wasn't ready. How could she be? She was in the middle of... something. 

Her stark blue eyes lit up, slowly following the length of her torso as it had snaked along the floor, performed a perfect loop, and then ended at the puddle of mercurial ooze from which she had sprouted like a futurist flower. It must have been almost fifteen, twenty feet in length, and she was ready to go further.

She stared, mystified. Her eyes scrunched up with trepidation at the sight of the phallic-looking tendrils that also grew like stalks from the ooze. Her breath was still.

Knock knock knock! Still, the door pounded, more emphatically this time. 

"Ms. Armitage??" A deep voice called from the other side of the door. "You in there!? Your delivery's here!"

"ONE SEC!!" Nikki croaked out loud, a familiar panic washing over her once again. "J-Just need to... pull myself together here..."

This was freaky. She was a freak. An alien freak, freaking out over the inherent freakiness. She remembered her shapeshifting, and tried to reform herself...

...But something refused to give. Letting everything hang loose was so cathartic, and she found, with increasing dread, that she couldn't retract her sheer length. She resembled a silver anaconda!!

She had to think quick. She wouldn't have to let this man in, so maybe...

"Okay," Nikki whispered under her breath. She had an idea. But she had to move her body...

Shlooooooooorp. Her body acquiesced, the puddle flowing towards the kitchen area with wet burbles. She tried to pull herself along, subtly growing in length all the while. She took shallow breaths, feeling the texture of the floor beneath her. 

"Mirror, mirror... okay!" Nikki swiveled to the full-size mirror she had modelled in this morning, rearing up like a cobra about to strike. Her massive mercurial mass would not pass the eye test, but... it's not like this man was going to see much of anything.

She massaged her skin, urging her familiar skin pigmentation and clothes to come back. With some mental finagling, her clothes emerged, as did her freckles, hair... everything that made her human. It wasn't perfect, though; she was missing her legs, still connected to a giant connecting tube of slime. And the transition from skin to slime was gradual past the ten foot mark. 

But above the skirt, she looked normal! And that was all she'd need. Hopefully.

...She'd just have to be careful. She conjured up a long, blue skirt to cover her waist and "legs", lowering a hand to furl the skirt. She turned to the doorway, doing what came naturally to her as her body continued to lengthen back to the doorway. She blushed silently, feeling the floor underneath her. Moving without legs was freaky.

Her hands trepidatiously lowering to the handle, she paused, took a breath, and then opened up the door slightly, peeking around the side so her dressed-up torso was visible. 

"Hello?" Nikki greeted him; it was difficult hiding the apprehension in her voice. The man was huge, gruff, and looked at home at a construction sight; he had a chiseled look to him and a stubbly chin. 

"Ms. Armitage? Jus' deliverin' your order."

He gestured to a medium sized crate resting at the foot of a dolly. The crate was quite big, about three feet high and just as wide and deep. 

Of course, Nikki knew what was inside, but... maybe she overshot her order a bit. She smiled bashfully, turning to the man.

"T-There's a buzzer near the front, you could've just-"

"You asked for direct delivery. Your mail guy let me in, so here I am." He muttered, raising a clipboard and a pen. "Just sign here and we'll be done here."

"A-Ah, right, um-" Nikki scrambled to provide a signature.

Unseen to the deliveryman, who could only see Nikki's face and torso, the rest of her body laid in heaps inside of her apartment, snaking all over. Nikki kept the door juuuust wide enough to block the man's view as she dealt with the delivery. 

"Alright, I can wheel this bad boy in if you wanna step aside-"

"NO!" Nikki blurted, raising her hands. She remembered her tone and smiled meekly. "I-I can bring it in. Don't worry about it."

"...This crate weighs a hundred and fifty pounds, lady, and I hauled it up several flights'a stairs, so just lemme finish the job, okay?" The man's eyes squinted. "You're gonna pull something if you even try, just lemme-"

"My boyfriend's here to help! He's... he's in the bathroom!" Nikki made something up on the spot. This invited a long stare from the man. 

"...Whatever. Knock yourself out. I got a crapload more deliveries to make." He took the dolly with him and headed for the staircase. Nikki cocked her head to the side, overhearing his muttering. 

"Stupid broads think they know better than the professionals... what's an uppity chick even doing with a stack'a nuts and bolts anyway..." His grumbling grew increasingly faint as he descended down the staircase. Nikki watched as his balding head disappeared from view.

"...Jackass." Nikki muttered under her breath, lowering to heave the crate. "Next time I'll tell them to use the buzzer. Hup!"

Nikki exerted herself to lift the box, but found that she had the muscles to lift it up to her chest. It was like carrying a box of old movies instead of a crate of hardware. Nikki blinked, smiling to herself. 

"...Guess all that time at the gym's been paying off."

She smirked to herself, ducking back into her apartment. As she closed the door, she let out a breath, her skin pigmentation fading away in an instant. The silvery sheen that rippled across her body felt increasingly natural. She reared up, her eyes following the trail her elongated torso left behind, stretching around her apartment, before collapsing into a puddle of ooze just outside of the kitchen; the telltale sounds of wet shlorping signalled that the pile was making its way back to Nikki, to properly reunite as a whole mass.

Nikki's eyebrow perked up at the sight of the strange tendrils that writhed and, as if floating, allowed her torso to extend forward to reach one with her own hand. It gingerly coiled around her wrist and up her forearm; Nikki could distinctly feel the two appendages as part of her own body; the trunk of her snake-like torso shrunk away, receding back into the puddle of slime as it grew into a veritable heap of itself. 

Nikki had a moment of clarity. Perhaps the handrail that had been thrust upon her had sated her cravings for the time being. Even as she knew the contents of her order, tucked away in a crate just to the side of her door. She quietly concluded it was better not to tear into her... extra reserves yet. She contented herself for an examination of her body's latest form. 

Her torso was familiar enough. She recognized her perky small breasts and her slim figure, but the further down her eyes trailed, the more unrecognizable everything was. 

Her lower body had long ago lost form entirely, congealing into a single enormous mass from which her torso emerged. The puddle stretched across the room in a ten foot diameter, and the pile where the material was thickest was at least five feet across. Nikki noted her heightened vantage point with a pang of concern, but mostly indulgent curiosity. 

She had grown at least a foot from how she was before her awakening. She could feel the sheer weight and stature that came with her body, though the strength that came with her made every motion... fluid.

"...God, there's so much of it... so much of me." Nikki muttered, trailing her hands across the ooze; she trembled slightly, feeling the contact. As if there was any denying that this stuff wasn't an extension of her now. Nikki thought of taking a step forward...

...The pile of slime acquiesced, opening up in the front like a capsule, strands of ooze clinging to the sides and breaking off as they retreated. Her slender legs emerged from within, like they were hugged by form-fitting tights. She took one step, and then another, emerging from her slimy pod. She glanced behind her, down at the pile of ooze she left behind. Her hair tendrils lowered, dipping into them. 

"..." Nikki took another step forward. And then another. With any luck, she could make her way to the kitchen. But the further she travelled, the more uneasy pangs she felt. Like she was leaving some part of her behind. 

She paused in her tracks, a moment of hesitation hitting her. A subconscious desire needled her again, one she thought had come to pass this morning. She turned to the puddle of ooze she left behind, staring expectantly.

The ooze shuffled at her whim, shuffling along the floor to reunite with her feet. Nikki grunted contentedly, her eyes trailing its movements. It lurched towards the kitchen. 

There was no getting past that this substance was part of her. An extension of her body. She was getting better at controlling it. Maybe now would be a better time to... experiment with her body's properties. Moving with more than just a pair of nice legs. The puddle collecting around her heels were merely an extension of her—another limb to flex. Perhaps as many limbs as she desired...

A narrow river of slime stretched across the floor, connecting Nikki's two halves. It slithered back to the kitchen. Nikki could feel her body, trace its movements as it disappeared from view. She had a more intimate understanding of how flexible her body was. She had an idea she wanted to try out.

She squinted, winked and looking through one eye. Through her open eye, she could see her living room. Normal, expected. She covered her closed eye, rubbing gently as if to coax it away. Maybe if she thought long and hard enough, she could get a bit more modular with her body. A current travelled along her extended body, down the hall and into the kitchenette. 

When she reopened her eye, she found herself looking around in the kitchen area, like viewing through two different monitors. She looked around, and caught her reflection in the reflected surface of a microwave door; her eye was suspended on a narrow stalk of ooze, sprouting from the puddle like a vine. She could swivel in all directions, looking through everything...

Another tendril emerged from the pile of ooze as well, initially formless, but quickly developing fingers; a disembodied arm sprouting from the puddle reached for one of the overhanging cabinets, opening the door to the dishware. Nikki's makeshift limb extended forward, reaching for one of the large-sized bowls; a yellow ceramic bowl suited for snacks, but one that could shatter easily if mishandled. 

Out of eyeshot, another tendril emerged and materialized into an arm and a hand, steadying the bowl as Nikki looked it over. Looking through two different viewpoints was getting to be trippy, and feeling through four points of contact was another. Nikki had an idea come to her. 

The composite Nikki in the kitchen lurched forward into the hallway, and tossed the bowl towards the original Nikki. Viewing the bowl soar through the air through two different vantage points. 

With the coolest nerve, Nikki caught it out of the air, her reflexes quick. Reopening her closed eye, she looked over the bowl, turning it around in her hands. She really could be in two places at once time... 

"Nifty..." Nikki cooed to herself. 

Her voice echoed in a strange way. Of course, there was no way an apartment this small could produce an echo. It sounded like it had come from two places at once. Nikki's eyes widened; she felt like she was being watched. Her brain tried to figure it out, but it didn't take long for her to realize.

She was still seeing through two sets of eyes. Nikki raised her eyes, looking down the hallway. 

It was a mirror copy of herself—the same copy she had manifested to grab the bowl in the first place. The two Nikkis stared each other down; their eyes lowered to the trail of ooze that connect them, before meeting each other's puzzled gazes again.

Nikki dropped the bowl she was clutching; it landed with a wet thunk at Nikki's feet, where the puddle of ooze cushioned its fall.

"Wh... what the hell?" Nikki uttered again. To her surprise, the copy mimicked her confusion as well, perfectly in sync. Nikki tilted her head to one side, and the copy followed; swaying her head to the other side, and the copy followed in turn. It really was like looking into a mirror copy of herself. 

"Did I... copy myself?" The two Nikkis muttered in unison. Sliding along on a pillar of ooze, they slowly approached one another.

"...Ah, this is... just a puppet, I think." The two Nikkis sighed in relief. "I'm still in control, everything's still connected..."

The two Nikkis stopped abruptly, before leaning closer to one another. "Are you just gonna keep repeating everything I say?" Their eyes narrowed as they stared each other down, folding their arms. 

"...Bleh! Gazoopa! Hubba lubba! Skinner rinky dink!" The Nikkis started blurting out any dumb gibberish that came to mind, flailing their hands above their heads as their arms swivelled bonelessly, head in boneless waves, in an attempt to psyche the other out. Of course, they were of the same mind, so their gibberish and clownish movements were only echoed in one another. They swayed from side to side, trying to catch the other off guard...

...But their movements were in perfect sync.

"...Okay, heheh... you're me, and I'm you." The Nikkis chuckled. "Guess we really are of the same mind."

This really was insane. Nikki thought she was just making different appendages in the kitchen, but she didn't have the whole picture. Somehow she made a body double of herself, from the same biomass she was made of. She could speak through it, dictate its movements, experience every sensation it felt... maybe she could produce more?

The two Nikkis slid closer, raising their hands in unison. Nikki thought about taking the copies hand, but was surprised to find that, instead of having a firm handshake, their hands simply... shlorped together. Connected by their wrists, they stared curiously. Still, that familiar feeling of intrinsic satisfaction overcame Nikki—like everything was going to be alright. Their hair tendrils coiled together, spiraling around and wrapping around, pulling them closer. They gasped in unison as their breasts pushed together, their chests and stomachs merging as they pressed against one another. 

As their bodies pressed tighter and tighter, an intense heat built between the two Nikkis. Their heads turned to one another. Their cheeks darkened as their faces drew closer. They were inching closer and closer. Nikki could feel the breath of her body double... and her own breath caressing their face in turn. They closed their eyes, their lips meeting as they pressed against one another.

Their bodies merged fully into a formless mass, a pillar of biomass writing and pulsating, before flopping over into the pule with a wet splash. With a sharp spasm, the mass relaxed its movements; the surface creased and valley, reforming into Nikki's humanoid form once again, albeit more shapely.

"...Holy crap." Nikki muttered to herself as she eased herself into a seated position. The excess biomass simply pooled around her in a puddle that continued to spread across the hardwood floor. Her mind went blank for a second. There were so many possibilities!

Gurgle...

"Mrgh... need to eat something." Nikki rose to her feet, her feet cresting the puddle as she strode along, picking up the ceramic bowl. She made a beeline to the crate she just ordered. She leaned over, noting that it was nailed shut.

"Should I use a crowbar? ...Eh, fuck it." 

She shrugged, before leaning over to grab the far side of the lid. Her arms sprawled along the surface of the crate, her biomass spreading across the nails embedded on the surface. She grinned bashfully as prickles of energy tickled the contact spots. She could even feel her engorged breasts resting on a pair of nails.

The lid was nailed securely, but it wasn't a match for Nikki's assimilative properties; she just silently absorbed the nails holding it in place. She could feel her skin seeping through the cracks, resting the nails, pulling them into her. She raised her right arm, smiling smugly as a pointed end slipped into her wrist. 

With a quick tug, she wrested the lid off. Inside was a veritable stockpile of metal nuts and bolts, glistening with a bright silver quality. A workshop smell drifted up from within.

Nikki's eyes lit up hungrily. This stash of supplies was surprisingly cheap—much cheaper than a grocery run!—and part of her wanted to dig right in. But reason prevailed; she had to pace herself, or else her weight problem would get exacerbated. 

So she filled up her snack bowl with a big scoop of nuts and bolts, refastened the list, and hurried over to the couch, and hurriedly plopped herself down. She'd have to find something to stream while she watched.

She reached for one nut, plopping in her mouth like a piece of popcorn. It quite literally melted in her mouth; she beamed, the pleasure centers in her brains activated. Her body reacted in turn, radiating a pleasant warmth.

"...I hope I don't get too far set on this sedentary lifestyle..." Nikki muttered, reaching for another bolt. She made a memo to run out around nightfall. She had a night class to get to later. 

Her eyes were glazing over quickly. It was hard to pay attention to what was going on; a wave of fatigue washed over her entire body. As if it was willing for her to lose consciousness, for her mind to drift to a different realm entirely.

"Mrgh..." 

With an incoherent mumble, her eyes slowly closed, leaning back to take a nap...

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