AN: This is my very first Korrasami Omegaverse story! It takes place at the end of Season 3, starting with Episode 8, "The Terror Within", and ending with Episode 13, "Venom of the Red Lotus".

For those of you who don't know, Omegaverse is a funny little AU that developed in the Supernatural fandom. In the Omegaverse, everyone can be classified in one of three groups: Alphas, Betas, and Omegas. Both male and female alphas have cocks (females get them when they're aroused, especially during an omega's heat), and possess the ability to 'knot' (tie themselves together) with their partner upon completion. Betas are basically the switches of this universe. They can mate with alphas and omegas, although they can't change their genitalia. Omegas are the bottoms. Both males and females have the ability to get pregnant, and they go through very intense heats, releasing pheromones that call all the alphas around them so they can find an appropriate mate.

Alphas might get violent with each other when fighting over a mate, but the omega gets to choose who satisfies their heat. Hurting or pressuring an omega to mate is highly stigmatized. In this particular universe, Korra is an alpha, Asami is an omega, and Mako is a beta, although this is only important in reference to his previous relationships with both of them.

. . .

Omega's Gambit

. . .

Chapter One:

Asami tugged at the neck of her dress, trying to coax a little more air beneath the high collar. Her trusty jacket usually accompanied her everywhere, but with the hot afternoon sun beating down overhead, she had started to regret wearing it. She ran a hand through her hair as she descended the courtyard steps, trying to lift some of the strands sticking uncomfortably to the back of her neck. If I spend much longer outside, my jacket's going to end up tied around my waist whether it stretches out the sleeves or not.

A loud shout from the courtyard ahead offered a momentary distraction. She paused at the edge of the bridge and inhaled, smiling fondly as she glimpsed a blur of blue amidst the dust. Apparently, Korra was enjoying her metalbending lesson. Her scent was even stronger than usual, sharp with sweat and determination. Still, there was something almost comforting about it. Asami liked Zaofu, but she had spent almost her entire life in Republic City. It was nice to have something, and someone, familiar around to remind her of home.

She got a better view of the action as Korra sprang away from a rippling wall of earth, using her hands to launch herself into the air. Her feet kicked out, and Asami's smile became a grin as the sharp gesture sent Wing's metal cable lashing back through the air. Even though she had only caught a few seconds of the match, it looked to her like Korra was putting her teacher through his paces.

"Are you all right, Asami?" She stopped and turned at the sound of her name, more than a little embarrassed that Mako had caught her staring. Normally, she could smell him or at least hear him before he managed to sneak up on her, but she had been distracted. On closer inspection, his brow was furrowed even more than usual, and he seemed concerned. "You look… uncomfortable."

"Uncomfortable?" She shook her head, brushing another lock of hair away from her temple so it wouldn't cling there. "No. I'm fine, promise. I was just watching Korra." Another loud shout interrupted their conversation, but this time, it was clearly unhappy. She and Mako both turned in time to see Bolin dodge a flying chunk of metal. It zoomed harmlessly past his head, shattering the pillar behind him.

"Maybe it's time to call things off," Mako suggested. "We need to get ready for dinner soon anyway." He gave her another long look, as if he wasn't sure whether to believe her or not, but didn't say anything else. Instead, he headed across the bridge.

Asami followed him, shielding her eyes against the glare of the sun glinting off the courtyard's decorative metal plates. Still, she couldn't help squinting in Korra's direction to catch the last few seconds of her sparring match. She was fighting Wing for control of the metal cable, letting it wind around an arm or a leg whenever he sent it whipping toward her. Her movements were almost hypnotic, and Asami continued watching the rolling motions of her body until Mako spoke again.

"Whoa! Nice shot, Bolin. But I thought you were supposed to be practicing metal-bending, not earth bending."

"Yeah," Wei muttered, rubbing the middle of his forehead. "Cheater."

Bolin dropped out of his stance and headed toward them, rubbing his shoulder in embarrassment. "Mako, metal bending is extremely difficult," he said, trying and failing not to pout. "No one gets it right away, if they can get it at all!"

As one, they all turned to watch Korra and Wing finish their match. Asami sucked in a quick breath, trying not to look too awestruck. Korra's abilities were always impressive, but they had never been so visually captivating before. She seemed to float over the ground, and her smile was dazzling as she danced away from one of Wing's missiles. Her body twisted and arched, moving with the same dexterity as the metal cable as it coiled around her waist. A split-second later, it was over. The cable shot back toward her opponent and caught his ankle, toppling him to the ground. She leapt into the air, twirling around in triumph and flexing her arms. "Woohoo! Metal-bending champion."

"Oh, sure," Bolin muttered. "She's the Avatar!"

The tension snapped Asami out of her trance. "Guys, it's time to get cleaned up," she said, struggling to remain focused on Bolin as Korra trotted over with a proud skip in her step. The uncomfortable warmth at the dip of her neck crawled all the way up to her face. She had no more excuses to stare, and she couldn't figure out why her eyes kept wandering in Korra's direction. "Tonight's Opal's farewell dinner..."

It was the wrong thing to say. Bolin's face fell, and his shoulders slumped in disappointment. "Ugh, and now I gotta say bye to Opal? This is the worst day ever."

Before Asami could try and reframe the situation in a more positive light, Mako stepped in. "It's all right," he said, clapping Bolin on the back. "Think of it as an opportunity. Opal will get to see you all dressed up."

"Hey, yeah." Bolin's face brightened. "Maybe if I clean up nice enough, she'll have a reason to remember me while she's gone."

"You do know that's our sister you're talking about, right?" Wei complained, folding his arms across his chest. Wing picked himself up off the ground and joined him, shooting an identical frown in Bolin's direction.

"Then your family's lucky," Korra said. She aimed a friendly punch at Bolin's shoulder, and he perked up a little more. "Bolin's one of the nicest omegas I know. If your sister's interested in him, it only shows she's got great taste."

"Come on," Mako said, glancing back across the bridge. "We should head inside and get ready."

As one, the group followed him away from the training grounds, still talking amongst themselves. Asami hesitated. The chatter was a dull roar in her ears, and she couldn't focus hard enough to separate the words. Only one of the voices lingered inside her head, low and forceful, but bright with laughter. Korra. Her voice is so... She couldn't think of the right word to describe it, but something about the timbre made her overheated skin prickle.

"Asami?" She blinked in surprise at the sound of her name. Korra had stopped and turned to look at her, and the wide grin hadn't faded from her face. "Aren't you coming with us?"

She tried to form a response, but she couldn't find her words in time. Korra let the others walk on ahead and jogged back toward her. Unfortunately, the sight of her shirt pulling tight across her abdomen didn't help loosen the lump in Asami's throat. Why can't I stop staring at her? She's always looked this way, hasn't she? But there's something different. Something...

Realization hit as soon as Korra came to a stop in front of her. There wasn't anything strange about her friend at all. The only difference was with her. Rising body temperature, racing heart, the strange pull Korra seemed to have over her... She felt like a fool for taking so long to put the pieces together. Her heat had come ahead of schedule, and her body was showing an interest in the last alpha she had expected.

Well, perhaps not the last alpha I expected, Asami admitted to herself. She had always admired Korra's appearance, but she had thought it was only for comparison's sake. Both of them had shown an interest in Mako around the same time, after all. And later, when they had become friends, she had thought the delight she felt at seeing Korra's smile was simply a result of their close relationship. The flutter in her chest was only because Korra was the Avatar, a spiritual being with powers beyond anyone else's comprehension. She was a hero who had saved the world twice already, and would probably do so again.

But none of that explained the pounding of her heart, the quickness of her breath, or the heavy ache that dropped right through her stomach to settle between her legs. The curious fullness there coiled tight, tugging at something deep inside her.

"Asami? Hellooo?"

She started and shook herself, gasping a little when she noticed Korra's eyes peering directly into hers. The soft blue irises seemed to demand something from her. A ridiculous impulse struck, and their locked gaze broke as her attention flicked down to Korra's lips. Had they always been so full? So close to hers? Water rose in her mouth, and suddenly, the only thing she could think of was how much she wanted to lean in and taste them. "Korra…"

"Oh good, you're awake," Korra laughed, giving her a friendly nudge. "I thought I'd lost you to the Spirit World. You looked like you were meditating while standing up or somethi..." Her voice trailed off, and she stopped in the middle of her sentence. Asami could see the exact moment Korra picked up on her scent. Her eyes widened, her nostrils flared, and the smile turned into a glassy look of desire. A primal shudder surged through the muscles in her arms, and Asami had to fight the urge to soothe it with her hands.

They stared at each other for several moments, silent and unmoving.

"Hey! Korra, Asami, are you two coming?"

Bolin's loud cry from the direction of the bridge broke the tension before either of them could reach out. Korra stepped back, and Asami finally gave up pretending. She let out a deep sigh and removed her jacket, unfastening the belt and slipping her arms free. Once it was off, she looped it around her waist and tied the sleeves together. "Sorry," she mumbled as she slid off the tie around her wrist, pulling her hair back into a messy ponytail. Korra continued watching, and the heated stare made her flesh burn. "I should… I mean, I need to…"

"Go," Korra said with a stiff nod. Her voice cracked, and for a moment, Asami was tempted to stay. It wouldn't take much. She scanned the training grounds on instinct, searching for opportunities. "Or, uh, maybe I should… I'll just go instead. Wait a minute and go in by yourself so they don't smell you. I'll make up an excuse."

Before she could protest, Korra sprinted off toward Bolin and the others. She didn't cast a single glance back over her shoulder, and once she was alone, Asami couldn't decide whether to be upset or relieved. Her mind was a tangled mess of confusion and lust, and although the logical part of her brain knew that this had been the best possible outcome, every inch of her ached with disappointment. She hung her head, folding her arms around herself and shivering as she watched Korra and the rest of her friends disappear up the courtyard steps.