Margin of El-Or

(Or "Margin of error"), AKA the Kryton AU.
Rating: Explicit, ABO, Alpha Kara, Omega Lena
Description: Lena hates Kara, but then they get matched.
Tags: Arranged marriage, First time mating, use of mating substances (consensually), mating chair, rough sex (even though they're kind of sweet about it?)

Lena had an exceptional gift when it came to calculations and numbers, but she could not for the life of her understand how the most advanced technology known to their civilization could ever compute that she would be the perfect mate for Kara Zor-El. The matrix must have been suffering a critical glitch in its system, because Lena despised Kara.

The announcement about her mate came in a silver envelope, which Lena torched before either her mother or brother would notice it. She could do nothing to challenge the matrix’s final choice, but she still had the week ahead before the Feast of Zhaol and there was still time to fix the issue if it was indeed an error.
 

While the whole situation was intolerable, the only complication that could make it worse was if her family knew about it in advance. Her brother had been priming her for greatness her whole life, and being bound to a member of the House Zor-El would be a permanent fault and handicap to achieving her full potential. 

As she fretted about the future, Lena dressed in a drab dark blue gown to suit her hopeless mood. She fastened a gold belt around her middle and placed her hairpiece on her head to restrain her curls. 

It was unavoidable that she would cross paths with Kara that week.
 

Krypton’s tried and true method to keep each class in their place was a rather loose caste system based around professions and their houses both belonged to the Science Council. She could have attempted to steer clear of Kara, but why bother?
 

Better to deal with the situation before the fool told anyone of the matrix's decision.
 

She had always resented Kara a little, even as a child. They were complete opposites in every way.
 

Kara was the epitome of light, she laughed too loudly and smiled too brightly and Lena hated how effortlessly friendships formed for her. Lena, on the other hand, was sharp and direct; she scoffed more than she laughed and her smiles were a rare sight to behold. She was precise, dedicated and practiced self-discipline, which was something Kara had yet to master, along with the ability to act her age. Lena had seen her just last week trying to fit three pieces of fruit into her mouth at once to amuse her friends.  
 

Lena spent more time working on projects than cultivating a social life.
 

Even when she had entertained the notion of making friends at the age of ten, everyone she approached gushed about Kara. They left her to play with the little blonde alpha, who bounced around oblivious to how her presence pulled everyone toward her and away from Lena.
 

Like a black hole.
 

Kara had sucked out all of Lena’s hope of finding a peer to connect with or anyone at all who would be capable of understanding her.
 

One day on her way home, the bubbly annoyance had dared to walk beside her. Kara had thrust a red flowering plant into Lena’s arms, then ran off with a pleased grin. Seconds later, a rash spread over Lena’s pale skin because the plant had been toxic.
 

From that day on, Lena knew in her heart that Kara Zor-El would forever be a torment in her life.
 

Making friends with anyone was a futile pursuit, but science, knowledge and technology? They were worth her dedication and Lena excelled at finding solutions to difficult problems.
 

By the time she turned fifteen, she established herself as a true prodigy. While everyone else let their hormones get the better of them with talk of future mates, and what life would be like when they were twenty and the matrix assigned them their perfect match, Lena remained laser-focused on her work.
 

Kara had bothered her in class a lot during that year — always hovering nearby and doing something foolish, like mixing chemicals to make them foam brightly all over the place, or tinkering with small robots that climbed onto Lena’s desk to get in the way. It was one of those annoying machines that had come close to costing Lena the class prize when it toppled her project off the desk, and she was convinced that Kara had been trying to sabotage her so she could win instead.
 

The majority of their interactions had somehow, in some way, been to Lena’s detriment and the idea of being bound to someone so calamitous was enough to make Lena furious. Perhaps that was why she stalked into the Science council lab with the intent to yell at Kara only to falter when she saw the look of concentration on her face.
 

It was easy to hate Kara when she did things that irritated Lena, like talk, or move, or breathe - but then there were moments when Kara seemed still and at peace, her boisterous energy tamed, and it vexed Lena to find her enthralling.
 

It took her an instant to realize she had stopped in the doorway, her gaze burning into Kara’s face until the alpha finally noticed Lena and scrambled to cover what she had been doing.
 

“Lena!” Kara gasped, her smile delayed and eyes wide behind her goggles. “Hi – I – you – uh – we – hi—”
 

 “Obviously a mistake has been made.” Lena dryly expressed in lieu of a greeting. “We should seek out The Council to make sure the matrix hasn’t suffered a critical error before it affects someone else. They’ll be able to assign us our proper partner as soon as the problem is resolved.”
 

Kara appeared to be frozen, her lips parted and eyebrows drawn together to reveal a crinkle of confusion between them. Her mouth formed words that her tongue didn’t deliver and then all at once Kara seemed to jolt back to the present. “Wait, I—but that’s—I mean the—the matrix doesn’t make mistakes. That’s why we use it. Why would you think that it’s broken?”

Lena strutted towards Kara’s lab table and cocked her head to the side in perplexed silence. She should have known she would have to explain the matter more slowly for the imbecile. 

“You honestly don’t think we’re a match,” Lena scoffed and glanced down at the abomination that Kara had been trying to hide from view.
 

The tiny bot skittered around and sang a strange old mating song. It definitely needed to be tweaked because at the end it sounded like a dying thought-beast. 

Lena sneered at Kara’s hard efforts to woo a future omega, until she remembered that was meant to be her. While she appreciated the handcrafted components that went into the small bot, her first instinct was to push it off the table and put it out of its misery. 

“It baffles me how you’re one of the highest ranked scientists in our academic community when you spend your time on frivolous projects like this. Hurry up,” Lena urged in desperation and attempted to haul Kara up by the arm. They had precious little time to dawdle when her reputation was at stake.
 

 “Okay.” Kara mumbled and all but tripped over her own feet to follow after her.

Although Lena had the right intentions by trying to ensure that her future wouldn’t be determined by some malfunction of the matrix, it turned out that the council held no patience for those who would assume their advanced technology lacked in some way. They were informed in no uncertain terms that the matrix was performing as it should, and Lena swore she saw a flicker of a smile on Kara’s lips that she wanted to smack off her face.
 

They walked in relative silence back to Kryptonopolis.
 

Kara offered to buy her lunch, but Lena’s stomach was twisting and turning at her rotten luck and she was in no mood to be around Kara.
 

“Yeah, I’d rather spend a night in the Scarlet Jungle.” Lena huffed, and Kara kept her mouth shut during the rest of their long stroll.
 

She avoided Kara at all costs for days afterwards, and her plan to keep her family in the dark seemed to have worked because she caught Lillian musing aloud about how odd it was that no envelope had been sent to announce Lena’s mate yet.

“I suspect they’ll announce it at the feast tonight.” Lex supplied with a roll of his shoulders and a gleam of amusement in his eye.

Lena felt sick at the notion, but if she didn’t attend that would be worse. There was no hiding from her fate any longer, so she sucked it up and dressed in the garb of mourning because she would be spending the rest of her life with the one person she couldn’t stand. If only space travel was permitted, she would volunteer for an expedition beyond Krypton and hopefully never return. She sat in her bedroom for as long as possible considering her options.
 

Lena only ventured out to find her mother after coming to the conclusion that there was no other way out.
 

“There you are,” Lillian lilted and took in her attire with a troubled and disapproving frown. “You can’t wear that to the Feast of Zhaol. It’s a celebration, for Rao’s sake. Change so we can leave. We don’t want to be late.”

The minutes were ticking down until Lena would have to stand on the Jewel of Truth and Honor and exchange bracelets with Kara Zor-El. Lena had no choice but to listen to her mother, and she disappeared back into her bedroom to dress in her full regalia for the day ahead. 

 They arrived within the crystal halls where the feast would be held, and she saw the gathering react to the sight of her in her gown — white as driven snow and just as delicate, with a sheer veil and a light crown of pearls and diamonds.

Kara stood in a blue suit with the House of Zor-El crest emblazoned on the front, already indulging in in the celebratory feast that was meant for after their nuptials. Her eyes locked with Kara’s from across the room and she hated that she instinctively took a step towards her. 

“Where are you going?” Lillian snapped and wrenched her back by the elbow while tightening her teeth into a smile, which she projected around the room at any onlookers. “I just heard Kal-El tell Lex that our houses are going to be united. Kara is your main competitor for the spot of speaker on the Kryptonian Science Council. Please, for the love of Rao, tell me that I’m having a stroke and that the matrix hasn’t chosen Kara Zor-El for your alpha.”

“No, mother, unfortunately for me and everyone that has to deal with you, you’re in perfectly good health, and it’s true, I have been paired with a Zor-El.” Lena was unable to keep her attention from Kara, who wandered towards her with purpose in her stride. 

 The confidence Kara exuded was both surprising and distracting, and Lena took a shaky breath before the alpha reached them. She looked good in blue with her golden hair tied back to show off her high cheekbones when she smiled. Lena felt something inside her react to it. Naturally, she resented Kara even more for daring to evoke something as close to attraction as she would allow herself to admit.

“Lena Luth-Or. I wasn’t sure if you’d actually come after we found out the matrix named us mates.” Kara admitted, clueless to how Lena glowered at just for approaching and speaking of the sore subject.
 

“You look radiant.” Kara earnestly declared and Lena loathed the way her cheeks brightened at the compliment. “I have a gift for you, if you’d like to come to my table—”
 

“She wouldn’t.” Lillian cut in sharply, her tight smile still in place and not about to drop. It was a deceptive mask that Lena had seen over the course of her life, and it kept everyone else oblivious to the anger that was ready to burst from her mother like a geyser of lava, ready to incinerate everyone. “Family sits with family until the ceremony.”

 

“Oh, well, when we’re sitting together afterwards, I’ll give it to you.” Kara insisted, her smile faltering as she nervously fixed the cuffs of her suit.
 

“Yeah, I’ll bet there’s a great many things you expect to give me, but you can keep them all to yourself,” Lena intoned with a sharp glance up and down Kara so that the alpha would understand her meaning — but as it happened, no one was more dense than a Zor-El.
 

“Oh, but – it’s in our vows that we’re supposed to be thoughtful and generous, honorable and true.” Kara recited the standard code that couples were supposed to follow, naïve to what Lena had been implying. 

At least if the thought of mating hadn’t crossed Kara’s mind, Lena might not have to follow through with that wedding night tradition. 

Lena gave Kara a gentle push in the direction of her table and glanced over her shoulder at her furious mother.

“I’m actually going to sit with Kara so she can give me her gift now. Half of the little surprises she’s given me over the years have been toxic or dangerous, so maybe this one will finish me off before I’m bound to her forever,” Lena explained within earshot of Kara, then she grabbed the alpha by the hand and dragged her away before the situation became any more uncomfortable. 

Kara looked crestfallen by Lena’s aggravation and idle hope of death.
 

When they reached the table, the alpha pulled a chair out for her with a hopeful smile that Lena never returned. She grudged having to thank Kara for anything, but she knew if she chose to be rude that people would talk and her reputation, which she worked so hard to maintain, would be tarnished. “Thank you.” She muttered, though she refused to smile.
 

“You’re welcome.” Kara said and compensated by smiling bright enough for both of them. She slid into the chair next to Lena and pulled out a small box that she handed over tentatively. “I made this for you.” She explained, her voice quiet as she gazed at Lena with a mixture of apprehension and pride.
 

Lena felt her stomach lurch as she thought of the terrible little robot that she caught Kara making days ago. If it was as humiliating as she thought, she would rather toss the gift than open it.
 

“Why?” Lena asked, before she could stop herself. “Is it going to explode the second I unbox it?”
 

Kara worried the inside of her lip and surprised Lena by announcing so quietly she had to strain to hear her, “I know you hate me. I mean I-I don’t know why you do, but can you just open it anyway? Please?”
 

Lena would have liked to list the ways in which she hated Kara and give detailed examples of why it was justified, but she could feel other guests watching them and so she seethed quietly and untied the ribbon to open the box. A small, hovering robot emerged and zoomed in a circle over the table before stopping to scan Lena’s face. This was a sleek design, much better than the ridiculous singing hunk of metal she had seen at the lab. 

“Lena Luth-Or.” It squeaked out, and then twirled in mid air. “I am programmed to show all of your exceptional talents and achievements.”
 

The little robot promptly projected a hologram before them that showed her as a child, solving mathematical equations that others had yet to figure out in her class. It transitioned to when she made her first robotic helper that she named Pizzly, but then she remembered that Kara had designed one too. That brought back old resentments over the fact that Lena had been second among her peers to build one.
 

On and on the robot twirled, giving glimpses of all of Lena’s accolades and important moments in her life, and Kara sat with a smile on her face as she watched them unfold.

“Why did you make this for me?” Lena asked in a soft voice of suspicion, as the impressive little bot settled down and folded in on itself to form a compact cube. She picked it up and turned it over in her hand to appreciate its beautiful engineering. “You scrapped your other project and still managed to pull this off in a week?”

“Nuh — well, no.” Kara shook her head and her face tinged a pinkish red as she gestured for Lena to check the side of the robotic cube, where a date was marked into it. “I started working on it five years ago. I’ve liked you for a long time, Lena, and I know — I know you consider me a nuisance, but I really hope that I can change your mind.” 

It stunned Lena, and as she sat re-evaluating their lifelong rivalry, she had an epiphany.
 

“Oh — all of those times that you were obnoxious and in my face — those were your misguided attempts to woo me,” Lena blurted. “You’re very bad at flirting.” 

“Uh — yeah, I guess so. If the matrix hadn’t named me as your match, I doubt you would have ever figured it out that I’m interested in you.” Kara freely admitted and pushed a plate across the table towards her with all of Lena’s favorites. As it so happened, earlier when she saw Kara loading up on sweets, they had all been for her. 

“You’re right about that.” Lena intoned, lifting her brows at Kara as she reached for one of the honey-dipped fruits on the plate. “I mean it — you’re about as smooth romantically as a blood-bloom cactus, and that’s being generous.”

 Kara shrugged as if she had gotten used to Lena’s blunt remarks long ago. “Maybe.” She considered aloud as she watched Lena bite into the fruit and lick her lower lip. “But I never gave up, and I have no regrets about that. Even when you glared at me for days and cursed me under your breath, I still thought you were pretty great.”

Lena wasn’t sure how to respond to that, so she took her time chewing as her mind worked over all the instances when she had been wrong about Kara. She realized, far too belatedly, that Lex had colored her vision red when it came to Kara because of his long standing feud with Kal. Add in her competitive nature that her family had fostered, and it was no wonder she came out of the gate swinging with a grudge.
 

“I was awful to you our whole lives,” Lena muttered. “How could you still like me?”
 

“Pretty easily,” Kara laughed, and leaned closer to look directly into the her eyes as she confessed. “I could never be sure how you saw yourself, but from my point of view? You’ve always been incredible. I didn’t really care about coming out on top in our Science Guild, but you? You glowed like Rao whenever you made something and that was a sight I wanted to see more than anything else. I never quite learned how to make you laugh, but once or twice I caught you smirking when one of my creations malfunctioned, so I tried to find new ways to entertain you with silly experiments.”

“I have to be honest, I thought you were just playing dumb all of these years to lull me into a false sense of security. More than once, you out performed me after one of your mistakes.” Lena dragged a berry through the glaze of golden honey and brought it to her mouth and for a second, she suspected that Kara had ulterior motives when she offered her the fruit. 

Kara seemed to be focused on her lips, and to test her theory, Lena sucked on the ripe, thick twellian pear until its juice ran over her tongue. 

 The atmosphere around them shifted as Lena was a little more intent with what she was doing with her mouth, just to distract Kara. Though the whole point had been to get a reaction, she wasn’t quite prepared for how Kara’s pheromones smothered her. She set her pear back on the plate, then considered her current situation and how it was similar to all of those other times she had tried to frustrate Kara when they were younger.
 

In every instance, it led to a new set of frustrations for Lena, and this proved to be no exception — because she began to feel a sexual frustration.
 

Her fickle omega seemed ready to forget about the past if Kara could make restitution during their inevitable mating night. 

Lena ignored her inner omega and pressed her thighs together before the alpha could get catch the aroused scent of her. 

It was poor timing that the elders who handled the Zhaol mating ceremonies chose that moment to call them up to stand upon the Jewel of Truth and Honor, a large crystal dais where they would exchange bracelets. 

When Lena moved to get up she saw the way Kara’s pupils dilated, and the alpha sniffed the air with growing interest as she stared at Lena knowingly. “Lena,” She husked, and held her hand out to pull the omega to her feet. They were practically pressed against each other and Kara growled under her breath in appreciation as she leaned forward to whisper in Lena’s ear, “So you do like me.”

Lena wouldn’t dignify that with a response, but only because she was having a crisis over the realization that they shared an attraction. Her vision tunneled as she inhaled Kara, both the familiar scents and the strange pheromones that freed her of inhibition.
 

Somewhere, Lena knew her mother must be watching on in abject horror as she reached out to take Kara’s hand. 

All around them, other families from the Science Council gathered to witness their union, and Lena would have resented being a spectacle if she paid them any mind at all. Her focus stayed on Kara, whose alpha energies were suddenly riveting and powerful.

President Tyr-Us of the Kryptonian Council greeted the crowd and began to recite the common marriage invocations to Rao. 

“Here we stand today upon the Jewel of Truth and Honor to celebrate the union of the houses Zor-El and Luth-Or.” Tyr-Us joyfully exclaimed and gestured with both hands clasped to each of them in turn. “By the grace of Rao who kindled the sun, they will find truths discoverable only within each other, and a lasting bond of love that begins with the festivities of zhaol and will grow more unwavering with every passing day. Through zhaol, the omega becomes the alpha, and the alpha the omega.”

Kara slipped the bracelet with her house colors onto Lena’s wrist, and she placed her own onto Kara as Tyr-Us explained the virtues that would guide them in their commitment to one another. 

The ceremony moved fast, as they were not the only houses to be joined that day, and then Kara led her through the throng of onlookers and away from the noise of the feast. 

It was part of the custom to retreat to the suites that had been designated to new couples during the Feast of Zhaol.
 

Each room was vast and luxurious, with wide open windows that overlooked the firefalls and crystal mountains.
 

Kara kept her hand entwined with hers the entire way, and when they ascended to their room at the top of the building, Lena felt her anticipation rise with the elevator.

Their room was gorgeous with high ceilings and chandeliers that sparkled romantically. The furnishings were minimalistic, and there was a large mating chair in the middle of the room. The bed was so wide it surprised Lena, but the sheets were silk and she loved the feel of them on her fingers as they walked by. They would spend the next two days here, and then explore the rest of Krypton in a month-long celebration of their union, as was expected.
 

On the table by the window overlooking the crystal mountains, there was a bottle without any label, the contents of which glowed a bright blue. Beside it sat two long stemmed glasses and she saw Kara stare at it with interest.
 

The elders had consulted the Science Council to invent a potent liqueur that would boost fertility among new couples for a prolonged period of time. Whether or not they chose to use it was entirely up to them. Many Kryptonians opted to use the birthing matrix due to their complex DNA, but it was often celebrated when couples conceived through zhaol.
 

“We don’t have to drink it.” Kara finally murmured, her smile soft as she gazed at Lena as if she was as spectacular as the fire falls. They had yet to even kiss, and Kara seemed to be deferring to her for final say on whether or not they would mate. 

The birthing matrix would be a foolproof way of following through with their duties, and yet when Lena glanced at Kara, she discovered she wanted the natural experience. It wouldn’t help her pride if she came right out and admitted it, so she poured them each a cocktail with the belief she could handle the strength of it. 

“Let’s just pace ourselves,” Lena whispered as she held out a glass to Kara, who swished it around before taking a tiny sip. She watched Kara’s eyebrows lift in delighted surprise at the taste and how she licked her lips afterwards. “Do you like it?”

Before Kara could confirm with a nod, Lena sampled it, and the cordial flavor blazed a trail of warmth down her throat. She carried her drink towards the seat at the window and patted the spot beside her. 

With an ungainly movement, Kara tripped in her direction—but then she righted herself, drew her shoulders back and took her place beside Lena. They both became shy, but the second time that Lena took a taste of her drink, she felt a little bolder. 

“I have to admit I’ve never seen an alpha before—I mean, not like that. I’ve never even gone on a date.” Lena expressed in honesty as she peered out at the bright molten fire that sloshed along the volcanic rock in view of their window. The temperature-protective glass reflected its heat in Lena’s face, or otherwise she was beginning to feel the effects of her drink.
 

“I haven’t either,” Kara admitted with a scrunch of her face and shrug. “I was too busy trying to get you to notice me, so I never really looked at anyone else.” She laughed, maybe because she felt embarrassed, or perhaps in relief to know she wasn’t alone.
 

From the way Kara gulped her drink, Lena could only assume she needed a boost of courage for what she was about to offer. “Do you want to see me?” Kara asked, the streaks of silver in her blue eyes like mesmerizing fractals of ice. 

Lena nodded, and Kara dragged the top of her suit off and then lowered her pants. Her strong shoulders and muscled arms were well defined, and her breasts were full and perfect.
 

Lena felt relieved that Kara stopped at her underwear because she was already breathing heavily.
 

“Are you okay?” Kara asked in concern, like she suspected Lena had some kind of respiratory problem.

“I’m fine,” Lena spat, flustered by her own response to seeing who Kara truly was under her clothes. It was her turn and she could sense Kara’s eyes trailing over her body as she began to strip off.
 

It was strange to experience vulnerability and excitement at the same time, and she hesitated with the zipper of her dress halfway down.

Kara must have smelled her insecurity because she came up behind her and pulled the zipper down as she murmured into her ear, “We’re bound for life. There’s no shame in letting me see you.”
 

Lena exhaled a shaky breath and listened to the soft rumble of desire that came from Kara as she smoothed her hands over Lena’s back and slid the fabric of her dress to the floor with a gentle nudge.
 

How odd to see Kara so proud and strong before her, not fumbling or stuttering as she stepped around to look her over.
 

“You’re gorgeous,” Kara informed her, as if she had never glanced in a mirror, but it felt different hearing the desire in the alpha’s words.
 

Lena’s omega reacted to it by releasing more pheromones, and Kara inhaled them greedily as she brought her hands up to ghost under Lena’s breasts. She held her gently, and used her thumbs to brush against Lena’s nipples before she slipped her arms behind the omega’s back. 

Kara pulled her flush against her chest so they could share their first kiss.

Lena had the prudish instinct to keep her lips closed, but it soon left her as Kara gripped the side of her face and meshed their mouths together like she possessed a primal knowledge of what to do. 

“Let’s take these off you,” Kara whispered and reached down to her damp panties. She grasped the material, pulling it away from where it stuck to Lena’s smooth cunt. 

Lena let the alpha slide the garment away, and they curled up beside each other in the mating chair to kiss. 

“This feels good,” Lena muttered, her eyes half shut and lips wet from Kara’s mouth. The nape of her neck tingled as Kara’s hand fisted in her hair, fingers rubbing at her scalp. 

She glanced innocently down at the bulge in Kara’s underwear and then averted her eyes before the alpha noticed where her attention was directed. 

The mating drink was inducing the feelings inside of her that only came from a strong heat, and Kara’s ruttish scents in turn brought out her deeply sexual nature.
 

Kara positioned Lena between her legs, and made her raise up her knees and part them. In this new spot, she could feel Kara’s erection prodding her lower back.
 

The mirror across from where they sat gave them an added perspective on what they were doing, and she knew Kara’s eyes were on her pussy. Her stomach fluttered with anxious excitement as Kara touched her for the first time. 

 The softest pulsations went through her and she clenched shyly when Kara’s finger rubbed at her opening.
 

“I’ve never done this,” Lena whispered. 

“You’ve never explored yourself?” Kara asked in awe, her gaze fixed on the mirror as she traced Lena’s delicate pink lips. She spread them so they could both see Lena’s purity, and then she dipped her middle finger down to rub the fragile spot she would soon be pushing through.
 

It must have excited the alpha in Kara, because Lena could feel her stiffen even more. Lena wasn’t sure why that sent a thrill through her frame as she caught her lip between her teeth and shook her head with a bashful whisper. “I was never very comfortable with the idea of doing that.”
 

“And what if I did it for you,” Kara asked, her lips right beside Lena’s ear as she fingered the silken patch of her chastity. “Would you like that?”
 

Lena trembled with desires she hadn’t known she had until a moment ago, and watched avidly as Kara played with her slick entrance, never pushing deep but just enough to let her feel the pressure. “Yes,” Lena whimpered and leaned into Kara heavier as the alpha teased from her entrance up to her clit in a large looping pattern. “Keep touching me there.”
 

“Here?” Kara asked, her finger swirling around the glossy bead between Lena’s slick folds. It peeked out between them as Kara caressed it firmly with two fingers, rolling it between them to make Lena jolt and gasp unexpectedly.
 

“Rao, yes, it feels—” Lena couldn’t pick a word that would properly express how good it felt. None of them held enough force to match the pleasure Kara could produce with just the tips of her fingers. “I can’t believe I spent so long thinking of you as a clumsy fool when you could have been doing this to me.”

Kara laughed and the warm puffs of air drifted over Lena’s pale neck and sent a shiver down her spine. “That’s not all I’m going to do.” The alpha husked, and Lena felt a wonderful drop in the pit of her stomach as she thought of Kara’s excitement, so solid and thick against her back. She moved, rubbing into Kara intentionally but with minimal effort, and watching Kara’s face in the mirror as she groaned.

Her curiosity led to her turning around and Kara seemed to understand what she wanted, because she inched her aside and stood to take off her underwear.
 

Lena stared in amazement as Kara’s cock sprang from below the fabric. The broad veined shaft and dripping brimmed head both excited and shocked her. She backed away, because she was sure it would be undignified to sit at the edge of her seat with her mouth hanging open. 

Kara rubbed at the wide tip of her erection with her hand as Lena slipped into the curve of the chair. She nibbled her lip, overcome with sexual urges from the drink and from her hormones. 

“Are all alphas like you?” Lena whispered out as she glanced at Kara’s impressive cock, then down at her own body for comparison. 

“Some, maybe.” Kara didn’t seem bothered by her naivete, or to even give the question much thought as she stepped closer to Lena. She widened her stance so that she could stand above her and then reached out to spread Lena’s legs. 

 The first gentle push of Kara’s cock only poked at her entrance and Lena tensed in anticipation. Kara took a few more practice thrusts and continued to rub at Lena’s sensitive pussy lips and the bundle of nerves between them. She whimpered at the contact and only when she was frantic with the need for more, Kara gave it to her. 

It was both painful and pleasurable as the pressure reached its breaking point and the thick blunt tip of Kara’s cock sank into her untouched warmth. Lena let out a startled cry at the new sensation and grabbed for Kara with both hands. “Wait, slow, go slow, but don’t stop. I want this, Kara.” She whimpered, almost ashamed by how much her omega had her pleading for it.
 

It would ache fitting Kara inside her. She could feel her pussy stretched already and the alpha was barely inside it but she craved to be full on such an instinctual level that she confessed, “I need it.”
 

“Rao, Lena… if you only knew how many nights I dreamt of you saying that.”
 

Kara held herself still and used the soft pad of her thumb to glide over Lena’s clit, and waited until she heard soft, breathy moans before plunging a little deeper with a groan. She shook with her own desires and how she refrained from thrusting all the way into Lena’s virgin cunt.

 Lena’s soft internal squeezing halted Kara from advancing too fast, but the alpha’s persistence paid off. She submitted to every inch stuffing her pussy with a quiet whine. The obscene split of her inner lips was a daunting sight to behold and she watched in awe as Kara began sliding into her with increased force.
 

The design of the mating chair kept her lower body raised up for Kara, and made it easier for each deep drilling thrust. Lena chewed at the inside of her cheek to stifle whimpers as a delicious but warm throb went through her pussy.

“Do you like how I feel?” She asked and Kara groaned, a lustful glaze in her eyes as she moved her hand over Lena’s cunt in open admiration.

“I love how you feel. You’re so warm and wet,” Kara huffed as she went a little slower, staring down at her cock entering Lena. “I hope this feels good for you too. I know it must be a little sore right now, but I’m going to make you feel good. I want to mate with you until my seed takes in you the natural way, Lena.”

Lena experienced a tiny flutter of pleasure from some deep-seated omega drive to be bred and knotted. She had no familiarity with what it involved, apart from a basic knowledge gleaned from standard education, but the sensation in her cunt told her to trust her urges.

“That would be best.” Lena agreed and Kara palmed both of her breasts, rubbing at a hardened nipple while pushing in so deep that the wide tip of the alpha’s cock tapped at her cervix.
 

Kara pulled out and sat on the edge of the chair, so she could play with Lena’s hot opening, still stretched from use.
 

“Sit on top of me for a little while,” Kara encouraged and moved to help Lena make the shift. “I can put you in another position for breeding soon, but this will really open you, if you want that.”

Lena followed her alpha’s suggestions, although sinking down on Kara’s cock and bearing her full weight on it was difficult. She eased the head inside, but the shaft speared through her cunt too soon and she needed to take it slower.

Spreading her legs and placing her hands on Kara’s chest for balance was the easiest way to prevent herself from sitting fully on top of her cock. The alpha held her at the waist to allow her to settle, and even then Lena shied from it.

“Rock your hips for me,” Kara directed, her strong hands moving Lena back and forth in gentle undulations that had the alpha angling her hips up to make sure Lena took as much of her cock as she could give her. “Lower yourself,” Kara rumbled, her natural instincts taking over as she held onto Lena and watched the way her cock was sheathed inside her liquid heat. “I want to be inside you completely.”
 

When Lena hesitated for more than a few moments, Kara surprised her by pulling her firmly down onto her thick shaft and she let out a keening whine at being almost unbearably full. She quaked at the sensation of being spread so wide and absently brought her hand to her abdomen where Kara’s cock was hidden so deeply.
 

Kara bounced her with slow upward thrusts and Lena gave a cry that brought color to her cheeks.
 

“Do you like when I do this?” Kara asked, thumbing at Lena’s clit with firm strokes that caused Lena’s inner muscles to ripple around her cock.
 

Lena nodded as Kara touched the intimate places that left her breath ragged. She bucked, leaning forward and then arching back to ride Kara and keep pace with the alpha’s motions.

“It makes me feel like your omega,” Lena admitted and Kara’s smile radiated pride as she treated her cunt to a thorough rubbing. 

She became addicted to the simultaneous internal and external stimulation, and her pulse went wild as she neared gratification. It was carnal and beautiful as she moaned and experienced her alpha snug inside of her as she came to a crescendo of pleasure. Her inner spasming wrapped her tight around Kara, who embraced her and pressed tender kisses to her face. 

When she stopped trembling, Kara raised her up and pulled out of her still clenching cunt. The empty feeling resonated through her whole body and Lena felt a wave of sadness at the loss of her alpha. It must have shown on her face, or maybe it was her scent that reflected her panic, because Kara scooped her into her muscled arms and nuzzled into her neck.
 

“You’re ready for me to breed you now,” Kara asserted confidently, totally focused as she walked over to the bed and positioned Lena on her knees with her shoulders and face pressed into the thick duvet. She smoothed her palm over the supple bend of Lena’s back and appraised her with a low, lustful growl as her potent pheromones unfurled, stronger now that the drink brought her fully into rut.

Kara climbed onto the bed behind Lena and knelt between her feet to position her eager erection at her opening. She squeezed Lena’s backside, and Lena knew that Kara’s gaze was roaming over both of her intimate holes. It brought a dark blush to her face but it felt right to have Kara look at her like that.
 

It inspired needs in her so primal she couldn’t even fathom them, but she trusted that Kara would take care of them for her.
 

“Do it Kara,” Lena whispered, taken aback by how much her omega wanted to be filled with the alpha. “Get me pregnant.”
 

Kara groaned loudly and hooked her fingers around Lena’s hips to slam into her tender cunt. The sound of her slick walls accepting the fast thrusts was erotic to her own ears and Lena exhaled provocative, breathy moans as Kara pushed into her with deeper, rough thrusts that had Lena mewling as she rocked into the bed.

Kara’s cock throbbed inside of her with a fast oncoming release, and a thick rush of seed flooded her cunt. The veins on the underside of Kara’s shaft continued to twitch as she slowed to watch a white pool trickle out of Lena. 

She slipped her fingers between her pussy lips, and then Kara guided her cock back inside. With a firm grip around Lena’s waist, Kara pumped into her at speed.
 

Lena had never been so purely driven by hormones, but with Kara’s pleasure dripping out of her, she entered a pleasantly hazy state of lust and contentment. Tingles shot through her skin, and she was so far gone that she could have drooled on the bedsheets.
 

Kara pounded into her and the force of it was what brought her back to herself with quiet grunts. She attempted to lift her head and stare straight in front of her, but found that hard to do when she was jostled every time. 

“Rub yourself, Lena.” Kara’s almost authoritative tone had Lena acting on the command immediately and wondering how the formerly shy and awkward alpha ever found it in her to take control. 

Kara showed her alpha nature more and more as Lena followed orders, rubbing the aroused and cherry red part of her that was so sensitive to touch. Her pussy tightened around Kara from the gentle stimulation, and Kara reached out to demonstrate what she wanted Lena to do. She used two fingers to stroke Lena, and all of the muscles in her lower abdomen squeezed from it. 

“Be firm,” Kara instructed her without letting up, or giving her the chance to take over. “It might feel like too much, but it’s okay to be rough with yourself.”

Lena moaned in agreement, but she was desperate for Kara to continue her rough-handling of her pussy. “Please, show me Kara, I’m still so new to this and you know more than I do.”

She had never been one to admit her shortcomings when it came to any form of knowledge, but this was a different matter altogether. 

Kara positioned her hand above Lena’s cunt while pumping into her to continue manipulating her clit.

Lena held onto the bedspread in front of her with soft gasps that became quiet wails of unhh, unhhh when she could no longer keep her mouth closed. 

“Just like this,” Kara huffed and leaned forward until she was draped over Lena, hammering into her with sharper exhales. 

Lena could scarcely keep her eyes open or attention focused, because she was so immersed in pleasure. Her limbs were shaky and her pussy clutched at Kara’s cock with intense pulsations.
 

Kara emptied another surge of creamy seed inside of her with a groan in her ear. She gripped at Lena’s hair, keeping her close in the aftermath of the sudden orgasm as her cock intermittently released again and again into her cunt. Even afterwards, Kara’s cock remained stiff and even more swollen, and that seemed to frustrate her. 

Lena wondered if the alpha would knot, or if the extreme heat she felt inside of her was just warning of the knot to come.

Kara grabbed her by the back of the legs and gave Lena a gentle tug to the end of the bed, where the alpha stood and began to vigorously slam into her. 

With growing aggression, Kara snarled and drove into her so hard that Lena moved with every thrust and the alpha had to pull her back into place more than once.
 

Lena clawed at the blankets, desperate to stay in position but powerless to control it. 

Kara’s fingers sank into her hips and the low dimples on her back, and Lena softly screamed from the bruising grip, but it felt so good when the alpha’s momentum doubled. 

“Rough,” Lena gasped out, and Kara seemed to interpret her the wrong way for a second because she slackened off. “No, no.” She whined in panic and rubbed herself at an almost violent speed. “Rough is what I need. Give it to me, Kara.”

Kara frantically followed through, and Lena cried out from the harsh pounding, but she loved it. Her inner muscles were open and relaxed enough to withstand Kara’s sexual vigor. The crazed rush of it was exhilarating as they both sought the sublime feeling of the knot. It would be a consummation of their mating and Lena burned with a desire for it. 

As Lena experienced another body-shaking orgasm, the quick twinges inside of her fired off Kara’s knot. The alpha moaned and buried her cock deep in Lena as a continual spurt of seed filled her.
 

The heated skin at the base of Kara’s shaft sealed it all inside, and they dropped onto the bed together in a sweaty entanglement. 

Lena whimpered from the pressure just inside of her entrance, but the spike in her hormones soothed her. Kara enveloped her from behind, arms in a protective snare around her waist. 

They dozed for a while and Lena reflected on the years she had spent feuding with Kara Zor-El. After all of the little annoyances she suffered, and how often it seemed Kara was trying to undermine her, it was overwhelming to feel safe and content with the alpha at her side. She never thought she would experience that with anyone, let alone Kara—but as she glanced at her and Kara reached out to slip a strand of hair behind her ear, she dared to put a name to her complex emotions.
 

Apart from her obvious confusion, there was love, hope and excitement to see how their lives would unfold together. 

She raised an eyebrow at Kara and a wicked smile tugged at her lips. “Since we’re always in competition with one another, let’s see which of us has more stamina.”

Kara grinned at her and laughed, scrunching her face and rolling her eyes towards the ceiling. “I was never in competition with you. You only thought I was. But congratulations, Lena, because this is the one time I’ll agree.”

Lena nudged her playfully and then pressed her forehead against Kara’s as they kissed.