So, before starting this particular story, a few notes are in order:

1. This is an Omegaverse story, but only sort of. Some of the usual features of that setting that don't appeal to me, like knotting and heat cycles, will be absent. In this universe, A/B/O is more of a chi thing than a hormonal one. Alphas have a sort of dominant aura, and Omegas a submissive one, which enhance attraction between them, and can trigger physical changes to facilitate mating. Betas have a more neutral aura, and can respond to either other type, but generally do so less strongly. If two Alphas or two Omegas are the ones having sex, well, you'll find out more about that soon enough. Other details about this stuff will be mentioned as relevant, and feel free to ask in the comments if you have any questions.

2. There's no full-on non-con here, but the first chapter is definitely a bit dub-con, in addition to the general dubiousness of the Omegaverse. (Though it's a bit less dubious in my version, I think) It will also get extremely smutty.

3. I'd like to share a bit of credit/blame for this thing with my two periodic collaborators: AmityN7 for suggesting a Korra/Kuvira hate sex scene set after the Battle of Zaofu, and Rae D Magdon, who's own Korra Omegaverse stories helped inspire this one, and who gave me encouragement.

4. I know I'm a terrible person for writing this. You don't have to tell me. Other feedback, whether praise or criticism, is most welcome.

None of this was supposed to be happening. After her time training with Toph, after bending the remaining mercury out of her body, after her visions at the banyan-grove tree, Korra was supposed to better. The Avatar was supposed to be back. After three long, terrible years, she could return to Republic City and put all of the weakness and self-doubt she'd suffered behind her.

And then she had challenged Kuvira for the freedom of Zaofu, and everything had fallen apart once more. Her only consolation was that no one else was there to see her humiliation. Korra had thought it was a good idea to move their duel to a more private place, a field away from the sight of the opposing armies. After all, once she won, she didn't want Kuvira to renege on their deal and just order her forces to attack anyway.

Of course, things hadn't worked out that way. The battle had begun with Kuvira beating her up pretty thoroughly, forcing her to go into the Avatar state in order to keep pace. That had given her the upper hand for a while, and she'd been on the verge of victory when it happened again. Kuvira had morphed into the shadow version of Korra's self that had haunted her for the last three years and she'd frozen.

The rock Korra had been bending slipped out of her grip, and she collapsed to her knees shaking. That old fear was gripping her again, and every time she tried to summon back her chi and resume the battle, it slipped away. She couldn't even get back to her feet, let alone keep fighting.

Kuvira had been knocked to the ground earlier, but she still had more than enough strength to take advantage of Korra's paralysis. The metalbender rose, and with a flick of her hand, a pair of steel manacles flew out of her pocket and wrapped around Korra's wrists before moving upwards, suspending her in midair. Korra was now completely helpless, and her own decision ensured that no one was coming to rescue her.

"I knew you were weak," Kuvira sneered, and with a further gesture, the manacles rocketed downwards, slamming Korra into the ground. The shock of the impact ran through her body, but her mind barely acknowledged the pain. The crushing sense of failure was far worse, a weight laying on her chest she couldn't seem to free herself of. Everything she'd tried to get rid of it had been for nothing.

Kuvira walked towards her, slowly, confident in her victory. There was an arrogant sneer etched on her flat features, and the force of her chi, always potent, had become overwhelming. "Now, what was it that we agreed to?" she asked. "That the loser would submit to the winner?"

Korra barely managed to choke out her, "Yes."

"Well then, submit to me."

Kuvira gestured at her pants and the metal buckle unfastened, making Korra's eyes widen. "That wasn't what I meant," she protested. This had been about Zaofu, not sex.

"No, but it's what you want, isn't it?" Kuvira took another stop forward. Her eyes were cold but compellingly intense at the same time. "I can feel you responding to me already."

Korra could only gape in shock as she realized that Kuvira was right. Already, she could see the tell-tale bulge forming at the front of the self-appointed Great Uniter's pants, while despite feeling the unwelcome stirrings of arousal in her lower body, there was no sign of her own change taking place. Korra knew that if two Alphas came together, the weaker of them would bend to the other's chi, accepting their dominance, but she still couldn't believe it was happening to her.

I'm the Avatar, THE Alpha. It should be her acceding to me, not the other way around. Just how low have I fallen?

"Tell me you don't want this and I'll stop," Kuvira taunted, her words playing on Korra's own doubts. "Tell me you don't want to let go of all the responsibilities you've been failing to fulfill and let someone else take control of you."

"I, I don't…" Korra stammered, trying to blurt out a denial, but nothing more would come. If after everything she'd done, she was still such an incompetent mess, then maybe Kuvira was right. She was utterly empty, all of her hopes and plans smashed to pieces, and Kuvira's offer was horribly compelling, holding out the promise of a reprieve, however temporary, from her own head. Why shouldn't she take it? A part of her hated that she was saying the words, but she said them anyway. "I do."

"That's what I thought."

With a single, rough motion, Kuvira pulled off her pants and plain, grey underwear together, tossing them on the ground. Underneath, her clit had already swollen, partially transformed even before she took it in her hand. A few rough tugs and the transformation was complete. A thick cock now jutted out from between the other woman's legs, one Korra couldn't help starring at as it reached its full length. She had never seen the process taking place on anyone but herself. After all, she was the Avatar, and her dominance was simply natural. A Beta like Mako had accommodated her, rather than the other way around. But that was then. Now, as Kuvira drew next to her, Korra's eyes were lowered as she prepared to do whatever was demanded of her.

"Get to it," Kuvira snapped, and when the tip of her cock was pressed up against Korra's lips, she opened them, allowing the head to slide inside. She wanted to loathe the feeling a lot more than she did. The head of Kuvira's erection was warm, and soaked with the thick, potent smell of her arousal. Korra could feel her body responding to it, her own clit harder than it had been in a very long time and yet not shifting either. It felt right to be giving in to the other Alpha's power, and even though that thought scared her, the fear wasn't enough to make her stop.

Kuvira wasn't being particularly patient, tangling a gloved hand in Korra's hair and pushing the next few inches of herself past her lips. Korra had never done this before, but she'd had it done for her, and she tried to copy that example, sucking on the hot flesh buried inside her mouth.

Her inexperienced attempts were still enough to make Kuvira groan, her grip tightening on Korra's hair as she hissed, "There you go. Suck my cock like a good little Omega."

In truth, Korra didn't quite know how to. The several inches she'd already taken were nearly enough to choke her and her hands were still cuffed behind her back, leaving them unable to help out. All she could do was bob up and down on Kuvira's erection, feeling her throb inside her mouth but not actually being able to get her off.

"Seems like you need more practice."

She's right. I can't even do this properly. Her cheeks burning with shame, Korra tried to relax her throat. She was attempting to take the other Alpha deeper inside, but in spite of her best efforts, she gagged.

"Breathe through your nose," Kuvira told her, her words far more of an order than a suggestion.

Breathing exercises were something Korra was familiar with, and after a few seconds, the fear that she would choke on the shaft receded, replaced with only a mild discomfort. Unfortunately, that only encouraged Kuvira to go harder. A second hand strengthened her grip on Korra's head, and she started thrusting into her mouth with greater vigor.

Korra's lips were getting sore from the rough treatment, and her jaw ached with the effort she was making, but even worse was the fact that some part of her was taking pleasure in Kuvira's growing enjoyment of her ministrations. Her cock was starting to leak fluid now, drops of her arousal dripping down in Korra's mouth. It was a heavy, salty flavor, and Korra ran her tongue over the head, taking in more of it.

I'm not good for anything else now. I might as well be good at this.

"Don't stop, Avatar." Kuvira's voice was low and dangerous, lust overwhelming her. Her hips pumped frantically and Korra had to struggle to keep her mouth on the cock driving in and out of her. After a few clumsy attempts, she was able to catch up with the harsher rhythm, even managing to lash the head with her tongue a couple more times. It was starting to swell and suddenly Kuvira went still, her hands locking Korra's head in place as she exploded. The first hot spurts of her release poured into Korra's throat, the drops she'd had before now turning into a flood. She had to struggle to swallow it all down, but not for long.

Without warning, Kuvira yanked herself out of Korra's mouth. She positioned the spasming cock in front of her face, wrapping her fist around the shaft and jerking it harshly. With each pull, fresh streams of her release shot out across Korra's face, covering it in sticky fluid. A part of her was disgusted with Kuvira, or with herself, she could scarcely tell anymore, but she didn't muster any objections either, just closing her eyes while the metalbender finished stroking herself off.

When she opened them again, Kuvira was still standing over her. Her cock had only drooped a little bit and a smug smile was now etched on her hard features. With one gloved hand, she cupped Korra's cheek, while with the other, she brushed off some of the streaks she'd left on her face.

"It did seem an appropriate look for you," she said cruelly, "But I don't feel like dealing with the mess later on."

"Later on?" Korra asked blankly, finally able to speak now that there wasn't a cock lodged in her mouth.

"When I fuck you," Kuvira replied, speaking slowly as if Korra was very stupid. "That is what you want, isn't it? I can sense how badly you need it."

Korra wanted to protest that wasn't true, but what was the point? She'd already accepted Kuvira's dominance when she sucked her off, and the metalbender was right: her body was crying out for this. It didn't care how she got it, she just wanted some pleasure, anything to cover up the emptiness in her soul. "Go on then," she said flatly, "Do it."

Without a word, Kuvira pulled off her soiled gloves and tossed them on the ground before raising her hands once more. The cuffs around Korra's wrists released themselves, but she didn't have a chance to appreciate her freedom. Suddenly, the metal flowed up over her body, slicing apart her clothes. Kuvira was ruthlessly efficient, and in only a matter of seconds, Korra was left clad in nothing but her underwear.

Another twist of Kuvira's hand and the metal wrapped around Korra's waist, forming a sort of belt that jerked her upwards, suspending her slightly above the ground again. The other Alpha took hold of her panties, tugging them down. With one hand, Kuvira reached up, squeezing Korra's breast, while the other caressed the curve of her hip. The touches were rough, but they were also skilled, and Korra couldn't stop herself from moaning.

Encouraged by the sound, Kuvira bent down to take a breast in her mouth. It was no loving kiss though, the metalbender biting the soft flesh firmly enough to make Korra cry out in a mixture of pleasure and pain. Kuvira moved up along the orb, tugging on the nipple with her teeth, while her hand pinched the other one. They'd been embarrassingly erect even before being touched, and by the time Kuvira straightened up once more, they were diamond-hard reminders of how turned on Korra had become.

Kuvira's hand slid down to her sex, and after a few passes of her fingers, the tips were sticky with arousal. "It's like I thought," she taunted as she brought them up to her lips for a taste, "You're no Avatar anymore, just a soaked Water Tribe whore."

Korra couldn't even manage a protest, instead just sighing pathetically. She was entirely enveloped in the corona of Kuvira's chi, and her sex quivered with the anticipation of being filled by her. Kuvira's fingers pressed against her entrance, and Korra tensed. No one else had ever been inside of her like this, but though she might have been tight, she was still wet enough to accept the digits without difficulty.

As soon as they were inside of her, Korra's body clenched down, not wanting to lose the feeling it had surrendered so much to get. It wasn't easy for Kuvira to start fingering her, but once she did, it was clear she knew what she was doing. As she slid her fingers along the sensitive spot on Korra's front wall, the Avatar's hips pushed back against her thrusts, silently willing her to go deeper.

Kuvira grinned wolfishly, clearly pleased with the effect she was having. "That didn't take long. You may not be as wet as an Omega, but you're certainly more than tight enough."

Korra hated that she appreciated the praise, but that didn't change anything, and a few seconds later, she could only whimper when Kuvira's fingers were withdrawn. She didn't have long to miss them though. Kuvira's bending took a hold of the metal band around Korra's waist, using it to guide her onto her waiting erection.

The tip pressed against Korra's entrance, and she bit her lip at the sudden pressure. The fingers had gone in easily enough, but the fat head of Kuvira's cock was another matter. The stretch it caused burned with a mixture of pleasure and pain, but Korra found that she still wanted it. Whatever else it meant, at least this was making her feel something.

Her body slowly opened up and the head was able to push all the way inside of her, followed swiftly by the rest of Kuvira's cock, the metalbender taking only a single, powerful stroke to sheath herself all the way inside of Korra. The sense of fullness was overwhelming, and her hands clutched at Kuvira's shoulders, still covered by her metal guards, as she tried to adjust to it.

The metalbender's hands took hold of Korra's ass, pulling her down harder onto her cock as she thrust in and out relentlessly. Kuvira seemed heedless of anything except taking her own pleasure, but the rough treatment was still having an effect on Korra. Heat was spreading through her body, waves of pleasure that seemed to blot out rational thought. Korra needed this, to lose herself in what she was feeling no matter how much she despised the woman making her feel it.

Kuvira had angled their bodies so that every time she slammed inside, her pelvis would grind against Korra's clit, and by now the point was so hard it was painful. For three long years, Korra had been too weak and too depressed to mate with anyone, and now, her body was trying to make up for lost time. All she could do was babble incoherently, a voice that couldn't have been her own pleading with Kuvira to take her harder and deeper, even while the metalbender placed more bites along the sensitive skin of Korra's neck.

"Whatever you say," Kuvira replied mockingly, but instead of doing so, she pulled out, leaving Korra achingly empty at the loss of fullness.

The other Alpha lowered her down to the ground, using the band to roll her over. A part of Korra knew how pathetic she must look, naked, on her hands and knees in front of the woman who had just defeated her, but she didn't care. She needed to come so badly that it was drowning out everything else, and she mumbled, "Fuck me more. Please."

Strong fingers took hold of her hips and when Kuvira slammed back into her, Korra couldn't help but groan with relief. The metalbender had been right; she was able to go even deeper in this position, her every thrust sending shockwaves through Korra's entire being. It was hard to hold herself up, especially after the beating she'd taken earlier, but even as Korra's head slumped down, the hands holding her refused to let her fall over, instead pulling her back against Kuvira's pelvis.

"Oh, Spirits," Korra groaned, "It feels…" She couldn't even finish the sentence. Kuvira was going so hard inside of her, and as her cock pushed against her inner walls, Korra could feel the last threads of her self-control snapping.

"Go on, Korra," Kuvira ordered. "Come for me. I feel how much you want it."

Korra felt as if she was under the metalbender's sway, her voice utterly irresistible. "Oh, fuck," she muttered, and then words failed her entirely. Her body shuddered and she screamed, her climax ripping out of her with terrible force. She'd never come with anything thicker than a couple of her own fingers inside of her, and the feeling was incredibly intense. Her pussy rippled around Kuvira's cock over and over again, and the contractions pushed the other Alpha over the edge as well.

Kuvira thrust even harder than before, burying herself all the way to the hilt, and then she stopped moving. A primal grunt came out of her throat as she released thick streams of her come inside of Korra. Unlike when she'd fucked her mouth, Kuvira didn't pull out this time, inside pumping out more and more fluid, until Korra couldn't hold it all. Hot trickles ran down her inner thighs, even while Kuvira pinched Korra's clit, deftly squeezing it between her fingers.

The pressure prolonged Korra's own climax, or perhaps pushed her into another one; she could no longer tell the difference. Above her, she was dimly aware of Kuvira's sighs, but she didn't care how self-satisfied the other Alpha sounded now. All she could do was shudder and whimper, her body shaking until she had nothing left to give.

Only then did Kuvira pull out, her cock leaking a final few drops of her come onto Korra's upturned ass. Her hands let go as well, and Korra collapsed to the ground. Whatever energy she'd had left was gone, and she buried her face in the grass, unwilling to look up at Kuvira.

The other woman was not so slack. She turned away from Korra, pulling back on her pants before tossing off a final taunt. "Well, that was fun," she said, "But now I have a city to take. You don't seem in fit shape to come back with me and admit defeat, but I suppose that when I'm the only one who returns, everyone will know who won this battle."

She's not even going to take me prisoner, Korra realized, But why should she bother? I'm no threat to her or anyone else. Now that the fog of lust had lifted, she felt even worse than before. There was nothing left for her but shame. There she was, laying on the ground, battered and spent, her skin streaked with the come of a woman she hated. And I let her do it. I wanted her to do it. I threw away the last shred of my dignity, just for an orgasm. All she wanted in that moment was to disappear. To just lay there and vanish even more thoroughly than she'd done the last time.

And then Kuvira spoke once more. "After this," she said casually, "All I'll have to do is take back Republic City, and the Earth Empire will be whole once more."

Take back Republic City?! Korra could hear the sound of Kuvira's footsteps trailing off into the distance, but though her body remained slumped on the ground, her mind had snapped to attention. As low as she felt, disappearing wasn't an option anymore. People she still cared about were in Republic City, and as badly as Korra had failed them already, as useless as she felt, they had to be warned.