Supercat!!!

For @beryl2 for the Super Santa Femslash 2017!

FINALLY DONE. Man this took forever, mainly because I was wrestling with how to approach it, once I had that figured out it only took me a few days to finish, BUT WEEKS of fiddling with it trying to get it right.

ANYWAY, I really hope you guys like it :D

if someday eventually i inspire a fic, i really wouldn't mind it, hint hint wink wink!

fullsize1 1920x1080px | fullsize2 1920x1080px | ig | twt

Ao3 Link

Fandom: Supergirl (CW show)

Word Count: 1,993

Summary: Kara has an extensive weapons collection and Cat gets horny about it.

CW: sexually explicit content, sex with a (sheathed) knife

A/N: thank you to @supersantafemslash for organizing the SuperCat Christmas in July fic event!

I love doing these exchanges. They inspire (force) me to write and I get so excited seeing what everyone else contributed 😁

For @iamsuperconfused

It started with a loose floorboard.

Cat had only been looking for her missing earring—nothing more. Kara’s apartment was quiet, save for the faint hum of the city outside and the occasional hiss from the kitchen, where her sweet, sunbeam of a girlfriend was most likely burning pancakes again.

Sunlight streamed through the windows, casting a warm, golden haze across the bed, the overstuffed bookshelves, and the cozy disarray that was so quintessentially Kara. So when Cat’s stiletto nudged the warped edge of the floorboard near the dresser and something shifted. She paused.

Her curiosity crackled to life.

She pressed again with the toe of her heel. The board gave way with almost no resistance. Interesting.

Cat crouched down, ignoring the slight protest of her knees, and lifted the board completely free. Her brows lifted in surprise. Then delight.

Neatly arranged beneath the floorboards was a collection that couldn’t possibly belong to Kara Danvers . Not the same Kara who blushed at compliments and teared up over heartwarming dog food commercials. Who was all sunshine and softness—bubbly, sweet, and just naive enough to make you believe it was real.

That could not be the same person who owned rows of weapons, gleaming under the dustless surface. Blades of all shapes and origins, each sharpened to a surgical edge. Disassembled firearms, polished and oiled with meticulous care. Alien tech, pulsing softly with dormant energy, and a lead-lined case that all but screamed kryptonite .

Cat stared, lips parting in a slow, intrigued smile.

“Kara,” she called, “Darling. Would you care to explain why the floor of your adorable little apartment conceals enough weaponry to arm a small insurgency?”

There was a pause. A clatter of a pan in the kitchen. Then Kara’s tentative voice: “…I can explain?”

Cat stood, not bothering to hide her amusement—or the spark of something else curling low in her stomach.

“Oh, I very much hope you do,” she murmured, mostly to herself, as she straighten out her dress. 

She heard Kara’s soft footsteps approaching, hesitant. 

Cat turned to face her, arms folding, one perfectly arched brow raised.

And Kara, standing there with an apron, flour on her cheek, and guilt in her eyes, looked every inch the girl next door.

Except now Cat knew better.

“First, they’re not all mine,” Kara blurted out, eyes wide, hands still holding the spatula like a peace offering. “The guns are Alex’s. Mostly. I mean, we share some things. And the box—yes, that is kryptonite, but not green kryptonite.”

Cat tilted her head, watching her squirm with mounting interest. “What type of kryptonite is it then?”

“Uhhh… the red type?”

Cat took a single step forward, controlled and deliberate. “Is that the one that makes you stronger, or the one that turns you into a wild, feral little thing?”

Kara blinked. “...Yes?”

Cat laughed—low, dangerous, and hungry. “Darling,” she purred, “you’re telling me you’ve been hiding that under the floor while letting me believe your darkest secret was how many snacks you eat before bed?”

“I wasn’t hiding it exactly…” Kara mumbled, cheeks flushing in a way that made Cat’s blood heat.

“No? Then what would you call it?” Cat stepped closer, close enough now to see the nervous rise and fall of Kara’s chest, the way her fingers twitched against the spatula. “Because this —” she gestured toward the open floor, the arsenal below, “—changes things.”

“I just didn’t want you to worry.”

“Oh, I’m not worried,” Cat said, voice thick now. She lifted a hand to gently brush the flour from Kara’s cheek, her fingers lingering just a beat too long. “I’m intrigued . In more ways than one.”

Kara froze, stunned. “You are?”

“You think I wouldn’t want my sweet Midvale farm girl to have a bit of bite? I crave it.”

Kara’s eyes widened, a flicker of heat igniting in them.

“Take off the apron,” Cat said, stepping back just enough to challenge her. “And show me what else you’ve been hiding.”

Kara’s eyes flicked down to the open floor, then back to Cat.

Something shifted behind Kara’s gaze. The guilt melted. The nervous fluttering stilled.

And then, slowly, she untied the apron.

The change was subtle. Cat watched with rapt attention, the smooth draw of the knot, the soft clink of the spatula being placed on the dresser. Kara let the apron drop to the floor without a word. She rolled her shoulders back. Her spine straightened. Her eyes darkened. 

There was an undeniable hitch in Cat’s breath.

“Turn around,” Kara said, voice lower now. Steadier. Commanding.

Cat blinked. “Excuse me?”

Kara stepped forward until there was barely an inch between them. She reached up, her fingers skimming Cat’s jaw, tilting it just enough so she could whisper into her ear. “You heard me.”

It wasn’t a request.

Cat’s pulse jumped. She hesitated, only for a second, but then slowly turned, her breath catching as Kara’s hands brushed down her sides, purposeful and unyielding. One hand slid around her waist, tugging her back until Cat’s spine pressed into Kara’s chest.

Cat gasped, sharp and breathy and helpless in the way she was already making a mess in her underwear.

“Do you trust me?” Kara asked, voice low.

Cat understood the question for what it was. A threshold, before a point of no return. 

Are you sure?

Heart racing, Catherine Grant answered.

“Yes.”

—

In the next moment, Kara had Cat beneath her on the bed—naked, breathless, writhing—and she hadn’t even touched her yet.

The difference was night and day.

Between the Kara most people knew: charming, bright-eyed, bumbling in the most disarming way. Sweetness wrapped in sunshine, with an awkward smile and a heart too big for her own good.

And this Kara.

This Kara hovered above her like a storm ready to break—confident, controlled, eyes dark with hunger and intent. Every inch of her radiated restrained power, her body coiled with it, every motion precise and sure.

Cat could hardly breathe.

Not because she was afraid. Because she had never been looked at like this before. With such an intense hunger. Like she was something Kara meant to savor. 

To claim.

“You have no idea,” Kara murmured, voice low and molten as she traced a knuckle down Cat’s bare thigh, “how long I’ve wanted to stop pretending.”

Cat involuntary arched her back, Her hands clutched the sheets, fingers twisting in linen.

“Then don’t,” she breathed, her voice a mix of defiance and plea. “Don’t hold back. Not with me.”

Kara leaned down, her mouth brushing Cat’s ear, her breath hot. “If you tell me to stop, I will.”

Cat turned her head just enough to meet her eyes—eyes full of heat, trust, and something dangerously close to worship.

“Take me,” she whispered. “Like you mean it.”

And Kara did.

Kara’s mouth moved down Cat’s throat, over her collarbone, reverent and unrelenting. Her hands in a bruising grip on Cat’s hips, holding her in place. 

And then Kara paused.

She leaned back slightly, eyes raking over Cat’s flushed, trembling form. “Stay there,” she murmured, voice threaded with command.

Cat’s breath hitched, but she obeyed. Of course she did. Every nerve in her body was attuned to Kara now, humming with the need to see what she would do next.

Cat’s heart pounded as she watched Kara cross the room and kneel beside the open floorboard. 

Kara returned with a blade—not drawn, not threatening. A slender, gleaming dagger, glinting faintly in the sunlight, held delicately between her fingers like a sacred object.

She climbed back onto the bed, settling between Cat’s legs, eyes locked on hers.

“Do you know what this is?” Kara asked, dragging the flat, cool edge gently along the inside of Cat’s thigh.

Cat shivered violently. Not out of fear, but anticipation. She could see it now, the full picture: Kara’s power, her secrets, the duality she kept so well-hidden behind bright smiles and innocent giggles. And still, this was her Kara. The one she trusted. The one she wanted .

“I don’t,” 

“It’s from Tamaran,” Kara said softly. “It vibrates with the energy of the one who wields it.”

Kara trailed the hilt of it slowly up Cat’s inner thigh, teasing, deliberate, until it reached its destination. The cool metal kissed the heat between her legs, eliciting a sound that was barely a breath—a whimper pulled from deep in Cat’s throat, raw and involuntary.

She trembled beneath her, legs twitching with restraint, spine arched in beautiful surrender. Kara smirked, eyes gleaming with heat and pride.

So easy.

So easy to reduce Catherine Grant—queen of sharp words, heels, and control—to this: a writhing mess beneath her. Not from force. Not from fear. But because Cat wanted it. Craved it.

Kara leaned down, her lips brushing against Cat’s parted mouth without kissing her, just letting their breath mingle.

“Still with me?” she murmured.

Cat nodded, dazed. “Yes—God, yes. ”

Kara gently slid the hilt of the dagger inside, letting it settle, for a moment, there was only stillness. Anticipation.

Then, with a subtle shift of her wrist, the blade responded—the promised vibrations blooming to life, powerful and thrumming, pulsing with an intensity from deep within.

Their lips met in a kiss that was all teeth and heat, tongues tangling, Cat’s moans swallowed into Kara’s mouth.

No more teasing.

Kara’s touch was sure now, sliding through slickness and heat with practiced precision. Cat gasped into the kiss, clutching at Kara’s shoulders, fingernails dragging across muscle.

“You’re so wet for me,” Kara groaned against her lips, smug and reverent all at once. “From just a touch. Just the idea.”

Cat tried to speak, tried to answer—but all that came out was a shattered moan as Kara pushed deeper, just right, just enough .

Kara chuckled softly, mouth trailing to Cat’s throat, sucking a mark into delicate skin.

“Say it,” she whispered, moving her thumb to cover the sensitive bundle of nerves.

“S-Say what?” Cat choked out, already beginning to unravel.

“Who you belong to.”

“You,” Cat whined, hips lifting, desperate. “ You, Kara. Only you. ”

And when she finally broke—shaking, clawing, crying out Kara’s name like a prayer—the Girl of Steel held her steady through it all. Power and tenderness wrapped in one beautiful, dangerous package.

She didn’t need weapons to conquer Catherine Grant.

But the fact that she could ?

That made surrender taste all the sweeter.

—

[Bonus Scene]

“So why do you have so many weapons underneath your floorboard?” Cat asked, voice tinged with amusement, “Surely you don’t need all of them.”

Kara blushed, the flush blooming down her neck and across her cheeks, an adorable contrast to the dominance she’d just wielded moments ago.

“I… collect,” she mumbled, burying her face briefly in the crook of Cat’s shoulder. “I wasn’t lying, some of the guns are Alex’s. Though, some are alien tech I confiscated and some are just… cool.”

Cat huffed a soft laugh, her fingers tracing lazy circles along Kara’s spine. “Kara Danvers, are you telling me you’re a secret weapons hoarder ?”

Kara groaned into her skin. “No! Not a hoarder. A—uh—responsible enthusiast.”

Cat smirked. “Mmm. Sure. And I suppose the vibrational dagger from Tamaran just happened to slip into your purse during a routine patrol?”

Kara pulled back to meet her gaze, sheepish but unrepentant. “It’s not like they were using it. And it responds to energy signatures. You felt that.”

“Oh, I definitely felt that,” Cat purred, her eyes darkening with memory. “Which is precisely why I’m going to insist it stays in rotation.”

Kara laughed, a sound equal parts bashful and smug. “I’m not sure it’s meant for that.”

“I didn’t ask what it was meant for,” Cat said, drawing Kara back down on top of her. “I care what it’s good for.”

Sign ups are now open for Supercat Christmas in July’s Secret Santa!

SIGN UP FORM: HERE

Fic, art, edits, gifsets, and fanvids are all welcome. Minimum fic length is 1000 words. Sign ups close on May 24th, and prompts will be sent out by May 28th. The deadline to complete your prompt is July 27th.

Follow this blog (supersantafemslash) for more updates, and message me if you have any further questions.

FINALLY DONE. Man this took forever, mainly because I was wrestling with how to approach it, once I had that figured out it only took me a few days to finish, BUT WEEKS of fiddling with it trying to get it right.

ANYWAY, I really hope you guys like it :D

This is your last weekend of writing before the deadline!