Work Text:
The engineering lab was quiet at this hour— too quiet, if not for the low hum of the army of 3D printers and the unholy screech of Tango’s overclocked laptop fan audibly picking a fight with God.
Most of the building had emptied out after ten. The only signs of life left in the Biomedical Engineering wing were the humming of overworked GPUs running simulations, the occasional flicker of overhead lights, and the fleeting silhouette of another student leaving the building.
Their lab—officially BME 13J96: Neural Prosthetic Prototyping Suite —looked less like the cutting edge of prosthetics research and more like a closet someone had crammed full of broken printers, duct-taped miracles, and half-dissected prototypes. Two of the ceiling panels flickered like they were crying for help in Morse code. An old space heater clunked in the corner, zip-tied to a rolling stool to keep it upright. The workbench was chaotic: energy drink cans, tangled wires, ESD mats half-covered in metal scrap and snack wrappers. A fractured 3D-printed frame lay abandoned in one corner like a dead beetle.
Pearl sat at the main terminal, the soft blue glow of the screen reflected faintly in her glasses. Her hair was clipped back, but stray curls still slipped loose across her forehead. Her fingers moved with clinical precision—scrolling through error logs, cross-referencing stack traces and tweaking parameters with the mechanical detachment of someone who was six hours past exhausted, and one caffeine shot away from an overdose.
Tango, meanwhile, was a human cyclone on the other side of the bench. He bounced between checking on the 3D-printers and the jungle of serial cables that connected the helmet to the prosthetic laying open on the bench like it was in the middle of a surgery, silicon casing peeled back to reveal a carbon-titanium frame, and polymer muscle fibers as fine as piano wire. His laptop beeped in angry protest, and he muttered to himself, half prayer, half cursing.
“If I had a nickel for every time the compiler crashed,” he grumbled, voice hoarse with fatigue, “we could fund a second prototype. Hell, a third.”
Pearl replied with a smirk, not looking up. “Don’t let Jimmy hear that.”
They shared a glance—both smirking. Then they were back to their respective tasks.
Pearl pushed up her glasses and recompiled the latest patch. She didn’t need to check the cables—she already knew which ones were the problem. She’d checked them twice. The software was stalling on signal conversion—another 50ms bottleneck right at the decoder thread.
The lab wasn’t glamorous. Honestly, it was probably a forgotten corner of the university’s chemistry wing before someone slapped a new nameplate on the door. The tiles were stained. One of the windows was permanently fogged after an incident with lemon extract and a now-banned filament. Most of their funding hadn’t gone to ambiance. It had gone into the arm.
Between them, the prosthetic rested on its stand—sleek, lightweight, human-shaped but unmistakably artificial. Its biocompatible polymer casing shimmered faintly under the desk lamp. The musculature was a synthetic-fiber weave threaded with memory wire thinner than hairs and layered conductive gels. A mess of sensor lines trailed from the socket like the roots of the artificial limb. It looked both beautifully alien and unmistakably human.
It looked less built than grown .
Their goal was a full brain–machine interface. No myoelectric sensors. No camera tracking. Just EEG signals—thoughts—translated into motion.
Which meant, unfortunately, that every wire in the clunky helmet rig currently sitting on the edge of the bench had to be perfect . And they weren’t.
Pearl pulled the debug logs from the serial monitor. “The signal's still breaking at 50ms intervals. Check the load on the decoder.”
Tango groaned. “Ugh—there’s probably a contact loose on the decoder. Hang on—”
“Found it.” Pearl reached over, grabbed a fresh copper strap, and clipped it to the helmet’s mount. “There. Run it now.”
Tango passed her the helmet. The thing looked ridiculous—like a cross between a medieval torture device and a noodle strainer, wires bundled across the top in thick, unruly tangles. Marker scribbles covered the shell: ‘TOUCH THIS ONE’ , ‘DON’T TOUCH THIS ONE’ , and ‘plug in first or die’ .
Pearl fitted it onto her head with practiced ease. She adjusted the contacts, brushed a loose strand of hair back from her cheek, and tapped her screen. “Patching firmware... okay. That should’ve fixed it. Let’s try.”
Tango leaned forward and flipped the switch. The table’s LEDs blinked in sequence—charging, calibrating, waiting.
Then—
Nothing.
The arm didn’t move.
Pearl frowned, eyes darting to the log window. “Wait. The tunnel is stalling again. It’s still buffering, give me a sec—”
A few more keystrokes. A soft beep. Her fingers stilled.
She took a deep breath in, and focused.
The prosthetic moved.
Not much—just a twitch. A jittery flex of the index and middle fingers, curling halfway toward the palm like a startled response. But it moved. It responded.
Tango’s jaw dropped. “Holy—Pearl!”
Pearl blinked. Her brow lifted. “Didn’t expect that extra batch loader to matter…”
She flexed again. This time, the wrist and elbow twitched, then smoothed into motion. A full curl. A rotation. The fingers opened.
“We did it! That's a real signal. That’s EEG input. We have a neural interf—holy—!”
Tango leapt out of his chair, fist-pumping the air so hard he nearly knocked over his half-drunk can of zero-sugar Monster. “It moved! That was you. Through the interface!”
He spun once in his chair and flung a high-five at her, which she returned—hesitantly, fingers still trembling from the sudden rush of adrenaline.
Pearl smiled—but it wasn’t the kind of grin Tango wore. Hers was quieter. Slower. Like something was unfolding inside her and she hadn’t quite decided what it meant yet.
Tango palmed his hair back in disbelief. “Pearl, this changes everything! Real-time neural interface? No more myoelectric lag? This is going to get us a meeting with the board. Maybe even more grant money.”
She gave a small nod. Her eyes stayed on the arm, now slowly uncurling its fingers as it finished calibrating. It looked alive.
Tango saw the look on her face and softened. He gave her shoulder a brief pat. “Hey. You good?”
Pearl nodded, faint but certain. “Yeah. Just…” She put on a smile, “Kind of in shock right now.”
He chuckled. “Fair.” Then glanced at the clock. “It’s almost midnight. You want food? I’m gonna hit the convenience store before it closes.”
She shook her head. “I’m good. Just wanna run a few more tests.”
He hesitated, clearly debating whether to say something, then decided against it. “Don’t stay too late, lock up when you’re done, alright?” he said, standing and stretching with a dramatic groan. “I’ll drop something by your place if anyone’s home.”
Pearl offered a tiny nod. “Thanks.”
He tossed her a salute as he left, the door clicking shut behind him.
The lab was quiet again. Just the soft whir of fans, the blinking of LEDs and the prosthetic hand resting on its stand beside her.
Pearl turned slowly back to the console. The helmet hummed faintly on her head.
She booted up the diagnostic protocol.
The screen lit up with values: signal noise, twitch latency, packet delay. Rows and rows of numbers scrolled down the console like a quiet applause. The neural decoder was holding. The signal fidelity was good.
She thought— close —and the arm responded.
Artificial fingers curled in near-perfect sync with her own. A little delay. A faint jitter. But when she tried again, the prosthetic moved more confidently. Less stutter. Less hesitation. More… certainty.
Pearl tapped another command. A simple test suite.
The hand flexed. Fingers tapped in sequence. The wrist rotated with a subtle mechanical click as the servos adjusted grip tension. She picked up a stylus and carefully slid it into the hand’s grasp.
It held.
On another tablet—rigged for fine motor testing—the prosthetic slowly traced out a shaky but legible hello.
Pearl inhaled. Quiet. Sharp.
It worked.
It listened.
She leaned in, adjusted a few lines in the delay parameters. Recompiled. Watched the waveform steady, the lag shrink. The motion grew smoother—more fluid. The machine was learning. Reacting. Adapting.
Perfect? No. But beautiful?
Yes.
She stared at it. The way it moved when she asked it to. Not flawlessly. But faithfully. Purposefully.
Then she flexed her real fingers. Once. Twice. Then glanced down at her wrists, her hands.
At her skin.
The sleeves of her hoodie were still pushed up. Pale forearms. Soft freckles. A few faded scars she didn’t like to think about—not angry red anymore, just old memories that never really fade.
Her hands looked softer. Frailer. Unsure.
And yet here—this arm? It was built. On purpose.
Everything was designed from the ground-up. Every bone was modeled and printed, every nerve was etched in carbon-gold filaments. Each weakness had been corrected, every failure iterated on. It worked because of its flaws. Iterated. Optimized.
If only she could say the same about herself.
She thought, what if she could rebuild herself — not to conform, but to fit. To make sense.
Pearl's gaze lingered on the prosthetic socket. Its perfect lines. Its quiet strength.
If this was mine… I wouldn’t have to hide anything. Would I?
She imagined it—replacing her arms, her whole body, piece by piece, like customizing a system she could finally live with. Precisely tuned. A body that made sense.
What would it feel like to be that precise? That deliberate?
What would it be like to exist without shame?
The thought landed like a weight in her chest.
Her throat tightened.
Why does this feel better than my own body ever has?
Her real hand trembled slightly.
The thought was too heavy to hold.
Then—
A vibration broke the silence.
Her phone lit up beside her, screen washing the desk in warm white.
Gem: Sent at 12:15 a.m.
hey. you okay?
you’ve been gone a while.
there's leftover pasta in the fridge if you’re hungry.
please get back safe <3
Pearl stared at the message. The tiny heart. The care disguised with plain words.
She typed:
You didn’t have to. Thank you.
She deleted it.
Thanks. Got caught up in lab work. Be back soon.
She deleted that too.
Finally, she typed:
Thanks. Be back soon.
And hit send.
She turned her phone face-down. The arm beside her didn’t move. The room didn’t change. But the weight in her chest shifted—rearranged into something quieter. Not solved. But softer.
She looked down at her hands again.
The machine had stopped flexing. Just idly following her thoughts.
“At least you know what you are,” she said softly, to the arm.
Her voice barely registered beneath the hum of cooling fans.
“At least you do what you’re meant to.”
She sat there for a while—breathing slowly, helmet still buzzing faintly. Watching the hand she helped build. Not reaching for it. Not turning away either.
It belonged in someone else’s story, not hers.
But still—it was here. Listening.
Eventually, she leaned forward and powered it down.
The lights on the arm blinked off.
The lab was quiet again.
Pearl let the silence settle for a moment longer before moving. She reached up, fingers slow, and unstrapped the helmet from her scalp. It came off with a soft click, wires shifting in her lap like vines. She rested it carefully on the bench, next to the quiet prosthetic.
Her hands moved on instinct now—routine steps etched into muscle memory. She logged out of the system. Shut down the neural decoder. Power cycled the signal relays. One by one, the monitors dimmed, their ambient glow vanishing into blank glass. The cooling fans eased into silence.
She rolled her shoulders, reached for her jacket, slipping it over her arms with the weary grace of someone hours past her limit. Her motions were smaller now. Slower. Like whatever had been keeping her upright was finally letting go.
Then she gathered her things. Laptop. Notebook. Phone.
She paused before turning to leave.
The prosthetic sat quietly in its mount, its fingers slightly curled in a resting pose. There was nothing alive in it. No hum. No breath. No spark. Just circuitry and plastic, held together by wires thinner than hair.
Pearl reached out—hesitated—and brushed the wrist with two fingers.
The polymer was smooth beneath her touch. Clean. Forged. Molded. It didn’t flinch. Didn’t ache. Didn’t carry scars.
She stared at it for a long moment.
Not like a creator. Not like a scientist.
Like someone looking at a version of herself that made more sense than the one she was.
She didn’t say anything. There was nothing to say.
But she felt something pass through her—quiet and low and impossible to name. Not grief. Not relief. Just... something hollow.
A space inside her still waiting to be filled.
She pulled her hand away. Exhaled.
Then—just before she flipped the light—she smiled.
Faint. Unresolved. Honest.
And walked out.
BONUS:
The hallway outside their apartment buzzed faintly, one of the overhead fluorescents flickering with a rhythmic whine that had never quite been fixed. Pearl’s key turned in the lock with a soft click. She pushed the door open just wide enough to slip through.
The apartment was dim—lit only by the faint orange glow of the microwave clock and the soft halo cast from a lamp in the corner, one of the ones Gem always left on. The silence was thick, heavy with the kind of stillness that came after midnight. Pearl eased the door shut behind her and slipped her shoes off by muscle memory alone.
She didn’t make it two steps before she nearly tripped over something soft.
Gem.
Sprawled half on the rug near the couch, curled against a throw pillow like she’d simply melted into the floor. One sock had slipped half off her heel. Her hair was a tousled halo, and her phone—still lit—was face-up beside her, its screen casting pale light over the peaceful slack of her expression.
Pearl blinked.
The lock screen showed a familiar message thread, the last one sent at 12:17 a.m. The time now blinked somewhere past one.
A glass of water sat untouched on the coffee table. A folded blanket was half-bunched beside her. She must’ve waited. And waited. And waited until her body gave up.
Pearl stood there, motionless in the dark, backpack still slung over one shoulder. Something in her chest twisted softly—tight and unfamiliar.
For a moment, the exhaustion in her spine lifted. Not gone, but quieter. The weight of the lab, the helmet, the prosthetic, the hours she’d spent inside her own head—shifted. Not gone. But lighter, in a way that made her chest ache.
She stepped carefully around Gem’s sleeping form, each foot placed with deliberate care, like any sound would shatter the moment. She didn’t know why her throat felt tight, or why the corners of her mouth pulled upward despite everything else.
A breath slipped out of her. Small. Shaky. Then came a smile—soft and tired and real.
Gem murmured something in her sleep and shifted slightly, her socked foot twitching as if reacting to a dream.
Pearl just looked down at Gem and smiled—small, quiet, and real.
Then, without a word, she moved into the kitchen.
Her stomach growled—loud and sudden, echoing in the stillness.
Pearl winced, pressing a hand to her middle. Right. She hadn’t eaten. Not since… lunch? Breakfast?
Didn’t matter. Her body was demanding her to. Now.
She turned toward the kitchen with slow steps, muscles aching in that dull, full-body way that came from hours of tension and not enough rest. The fridge door opened with a soft suction-pop and a faint rattle of jars in the door.
Inside, lit in quiet blue, sat a single bowl.
It was small, snug, and neatly covered in beeswax wrap. A sticky note had been pressed gently to the top, its ink slightly smudged around the edges from where a damp finger must’ve touched it.
“For Pearl :) heat for 1:30
drink some water too please <3
–Gem”
The handwriting was loopy. Casual. The kind of note that didn’t expect thanks, only hoped it helped.
Pearl stared at it for a moment, then exhaled softly through her nose.
The corner of her mouth lifted—barely—but it stayed.
She lifted the bowl carefully, placed it in the microwave with both hands like she didn’t quite trust herself not to fumble it, and closed the door with a soft click.
Her finger hovered over the keypad.
1:30
She hesitated. Not pressing it yet. Not quite ready to break the quiet.
Instead, she stood there for a breath, still holding that tiny smile, listening to the soft background hum of the apartment—Gem breathing gently on the floor behind her, the fridge humming to itself, and the quiet thump of her own pulse in her ears.
A beat passed. She thought, Maybe I don’t need to eat just yet.
Her stomach growled again—louder, more insistent.
She pressed Start.
The microwave hummed softly behind her, a dull mechanical whir that barely cut the quiet.
Pearl stepped back into the living room.
Gem was still there—curled on her side near the base of the couch, her head tilted slightly toward the pillow she’d dragged from the cushions. The light from her phone cast a faint glow across her face, screen dimmed now, only flashing with idle notifications.
She hadn’t moved since Pearl came in. Still breathing slow and steady, lashes casting faint shadows on her cheeks.
Pearl stood over her, still and quiet.
Her chest ached—not with hunger now, but with something looser. Slower. The kind of ache that pulled from somewhere deep, and full of things she didn’t quite know how to name.
She didn’t understand it, but her whole body felt like it had exhaled.
Like it was safe here.
Still here.
You’re ridiculous, she thought gently, watching the little furrow between Gem’s brows. How do you sleep like this.
The smile she didn’t realize she’d been holding deepened, just slightly.
Without thinking too much, she turned to the couch, grabbed the throw blanket tossed across the backrest, and lowered herself down to her knees.
The blanket draped softly over Gem’s shoulder, then her waist.
Gem shifted a little under the weight—murmured something incoherent—but didn’t wake. Her breathing evened out again a moment later. Calmer, if that was even possible.
Pearl stayed there a beat longer, crouched beside her.
Watching her.
And then something shifted.
Not the mood. Not the warmth. That stayed. But her body—her body betrayed her.
It was sudden. Sharp. A heat in her chest, then lower. A pressure where there shouldn’t be. Her breath caught. Her mouth went dry.
The warmth that had been resting gentle and soft behind her ribs became something else—something uninvited.
Her pants felt suddenly too tight.
Pearl froze.
No.
Her whole body locked up. Eyes wide. Skin cold.
Her stomach flipped, nausea crawling up the back of her throat. The warmth—the safety—that moment of peace—
She ruined it.
Her hands, still clutching the edge of the blanket, trembled.
No. No, no, stop— she thought, reeling. Seriously?
She stared down at Gem—peaceful, sleeping, unaware—and a bolt of self-loathing carved through her like a hot knife.
You disgusting freak—
She’s asleep.
She trusts you and you ruin it.
What the hell is wrong with you?
Her fingers curled into fists, digging into the fabric. Her jaw clenched so hard it ached.
It wasn’t like that—it wasn’t, she knew it wasn’t—but her body didn’t seem to care what she knew. Her body was reacting. Misreading the warmth in her chest and turning it into something shameful. Something filthy. Interpreting safety and softness like a signal to arouse, and arousal was the last thing she wanted to feel.
You’re not supposed to feel like this.
Not here. Not now.
And definitely not about her.
Her throat closed. Shame slammed through her with the force of a breaking wave. She turned. Stumbled upright, legs trembling.
She didn’t dare look back.
She didn’t breathe until she was halfway to the kitchen.
The microwave read 0:01.
Pearl hit the stop button harder than she meant to.
The machine cut off mid-hum. The kitchen fell silent.
No beep. No bright tone to wake the apartment. Just the quiet churn of her own breath—shallow, uneven. Her chest lifted once. Then again.
The silence was loud.
She didn’t move at first. Just stood there, staring at the glowing green numbers frozen on the screen.
0:01
The air buzzed faintly around her. Her heart pounded in her throat. Her skin still crawled.
She reached out—slow, mechanical—and opened the microwave door. The bowl inside was hot, the glass warm against her fingers. She pulled it out and set it on the counter with shaking hands.
She turned, leaned back against the counter. Let it catch her weight.
Both palms flat against the edge. Forehead lowered. Her weight sunk into the cold tile like it might anchor her.
Her knees were shaking.
She didn’t cry.
She didn’t scream.
She just breathed—ragged and shallow, trying to remember how.
After a long moment, she whispered—barely audible:
"What’s wrong with me."
The words hung in the dark.
No one answered.
She didn’t say anything else.
Just leaned into the cold edge of the counter
and waited for her body to shut up.