Work Text:
House Targaryen kept its bloodline pure by pushing for mating between its alpha and omega siblings whenever possible, but sometimes it was necessary to find a mate from elsewhere the way normal people did. Sometimes matings were arranged for political reasons, and young Lucerys had always known that, as his mother's only omega, he was an important bargaining chip. He grew up fully expecting to be promised to some alpha from a wealthy and powerful house to create an alliance once he was old enough.
It was no surprise that Luke was his mother's only omega, a beta mated to another beta was unlikely to produce anything except further betas. So when Rhaeynra's first born had not only had brown hair and eyes, but was also an alpha, tongues began to wag. Her young alpha pup, Jacaerys, bore a notable resemblance to Harwin Strong, the princess' alpha bodyguard.
Then her second born was an omega, and that shocked everybody. Although not unheard of, it was extremely rare for an omega to be born to anyone other than another omega, regardless of what its father was. Lucerys shared his older brother's colouring, though, and once again, his true parentage was called into question.
Her third was another alpha. Young Joffrey also had brown colouring, and by now that had become an expected feature of Rhaenyra's pups and a source of mockery.
No one, however, was surprised that her final two were alphas, as they were fathered by her second mate. Her uncle Daemon, like her father, was another alpha and had already fathered two alpha girls with his previous beta mate.
As Rhaenyra's younger half-siblings were all born alphas like their father, despite their beta mother, Luke ultimately found himself the only omega in the family.
While Luke was still sexually immature, the family acted very protective of their one precious omega. Jace, in particular. Young Luke appreciated the family's attentiveness, and especially Jace's devotion to him. The two often slept curled up together, and Jace always kept a watchful eye on Luke, aggressively challenging anyone he considered to be a threat or a potential unwanted suitor to his little brother; especially Aemond, the most cunning alpha in the family, who already seemed to have a different type of interest in Luke.
When an altercation between the three resulted in Aemond losing an eye at Luke's hands, Jace was sure that Aemond would finally leave Luke alone. He was disappointed in the expectation. Aemond's unwanted interest only intensified.
"When he's old enough, he can repay me by giving me purple eyed pups," he said on one occasion, causing another fight with Jace.
As Luke began to mature, things began to change. Although the family were still protective of Luke, more jealousy towards each other began to emerge.
Rhaenyra had made her wishes clear regarding Luke's claiming. He was all she had to bargain with, she wouldn't waste him on a member of the family, the bloodline was currently pure enough not to require that. When his first heat arrived, she would keep him locked away in his quarters until it had passed, seeing no one but her.
She was fully aware that there were far too many alphas in a family known for its incest for the sole omega to be safe from them all whilst sexually mature and still unmated. An entire pack of alphas deprived of any other omegan company could become very dangerously aggressive if driven into a frenzy by Luke's heat.
When Luke's first heat finally arrived, Jace was the one who detected it first, loudly sniffing the air when Luke entered the room. As every alpha turned to look at him in unison and Aemond took a meaningful step towards him, Rhaenyra hurried him away.
With no other omegas to talk to about such things, Luke hadn't realised how unbearable heat was to an omega who was denied any alphan company to alleviate it. All his body wanted was to mate, and all potential mates were being kept on the other side of a locked door. He spent most of the time naked, both because he was overheating and because it was easier to masturbate that way. He had little appetite for food and just drank a lot of water to stay hydrated while he rammed his fingers, or any object he could find, into his slick-soaked hole, ground himself against the furniture, and sobbed with frustration.
As soon as his heat had safely passed, he was able to re-join the family. But the way his eldest brother acted towards him had completely changed. Jace had a new heated look in his eyes whenever he looked at Luke, and Luke realised that Jace was no longer looking at him just as a brother, but as an omega. A fertile omega, ripe for the taking.
It was normal in the Targaryen clan, after all. Luke was aware he would have been automatically designated as Jace's mate if his mother hadn't decided that using him to form useful outside alliances with was more important. Vermax and Arrax had already become a mated pair, always sleeping coiled together and frequently nuzzling each other.
Jace developed territorial behaviour as well, pacing and prowling around in an agitated manner whenever another alpha was in the room with him and Luke, growling if anyone got too close, and always having his hands on his little brother.
Aemond was, not surprisingly, the one who got Jace riled up the most, Aemond's one purple eye was always lingering on Luke whenever they were in the room together. He also made a point of calling Jace a 'strong alpha', seemingly not caring that the 'strong' pun also applied to the object of his desire. At one point, Jace attacked him with a knife and made a good attempt at stabbing out his other eye until Daemon dragged him off, using his status as the superior alpha to subdue him.
Luke enjoyed his brother's attention, he always had.
Rhaenyra soon decided Aemond was becoming too much of a threat, both to Luke and to Jace, and removed her entire family to Dragonstone. Surely things would be better there, she told herself. With half of the family, including his main rival, out of reach, Jace would surely calm down his aggressive alphan tendencies.
When Luke's second heat arrived unexpectedly one evening during dinner, Jace's stormy brown eyes were fixed on him from across the table until Rhaenyra realised what must be happening and hurried Luke away to his quarters again. Luke looked back over his shoulder at his older brother as he was hustled out of the room. Jace had his teeth bared and was gripping his fork hard enough to bend it.
Luke found himself hoping that Jace would try to get to him, maybe break Luke's door down in the night. The doors on Dragonstone weren't as sturdy as the ones in the Red Keep, after all. As he tried to relieve himself by frantically masturbating, ramming his fingers over and over into his soaking hole while chewing on his pillow in frustration, it was his brother's face and voice and scent filling his mind.
Almost as soon as his second heat had passed, Rhaenyra brought up the question of finally finding him a mate. There were several houses who would make good candidates for an advantageous match for House Targaryen; the Baratheons, the Lannisters, the Starks.
Jace, standing moodily by the fireplace, staring into the flames, reacted with irritation at the mention of Cregan Stark.
Luke briefly glanced his brother's way. "I guess..." he said quietly.
"He's a good alpha and would make a good mate," Rhaenyra assured him. "He'd take care of you."
She looked up as Jace stalked out of the room. Her eldest had met Lord Stark and, as far as she knew, they'd got along. As well as any two aggressive alphas could get along.
She turned back to her omegan son, taking in Luke's pensive face. "We don't have to decide right away, take some time to think about it. We should invite a few eligible alphas for a visit and see what you make of them."
She'd have to send Jace elsewhere for the duration, probably to Driftmark. It would clearly be too dangerous to have him around while other alphas were attempting to court his brother. He could return once Luke was safely mated.
Luke just nodded disinterestedly, gazing into the flames. He didn't really know Cregan Stark or any of the other candidates suggested.
The blazing fire was making the small room rather hot, at least for an omega freshly out of heat, and Luke decided to step outside for some cooling air. He wandered the battlements for a while, listening to the soothing sounds of the sea, and letting the chill night air cool him down.
As he turned the corner, he realised Jace was already there, gazing moodily out to sea. Luke had expected him to be in his room. He turned at Luke's approach, the flickering torchlight serving to make him cut a sinister figure.
Luke swallowed hard at the sight of his brother's dark gaze alighting on him. He stepped closer, his legs seeming to move of their own accord.
"Cregan Stark?" Jace demanded in a low dangerous voice.
"No!" said Luke decisively.
He took another step forward and Jace reached out and grabbed him by the arms, digging his fingers in hard enough to bruise. He propelled him backwards into a turret wall and held him in place, trapping Luke with his larger form and fixing his heated gaze on Luke's eyes. The heady intoxicating scent of his pheromones filled Luke's nostrils, and his large alphan cock pressed into Luke's thigh through their clothing. Luke's omegan body trembled with desire, wetness growing between his buttocks as his hole slicked itself in anticipation.
Jace nuzzled Luke's neck, making him whimper. "Say it," he insisted against Luke's ear, his voice low and dark.
Luke swallowed hard and looked down.
Jace grabbed the back of Luke's hair, twisting his fingers in painfully as he pulled Luke's head up to face him. "Say it!" he growled.
The word fell from Luke's lips almost unbidden. "Alpha..."
"Good boy."
Jace lunged down and crushed his lips onto Luke's in a brutal kiss, then threw Luke's head back, exposing his neck, and bit through his mating gland.
Luke cried out as his brother's fangs broke the skin, it was painful, but it felt so right.
"Mine!" Jace growled when he pulled away.
Luke's legs gave out and he sagged in his alpha's arms. Jace scooped him up and carried him back indoors, wrapped in his cloak.
When Rhaenyra found them, the two were curled up in front of the fireplace in Jace's room, lovingly nuzzling each other in the flickering light of the flames, as Jace gently groomed Luke's hair with his fingers in the way an alpha only would with his claimed omega.
Rhaenyra's eyes went to the fresh raw bite mark on Luke's neck, his mating gland still oozing a watery mix of blood and glandular fluid. Jace lapped at it lovingly, wiping up the mess with his tongue, the healing enzymes in saliva would speed its recovery.
"What did you do?" she demanded, looking between one son's face and the other, although she already knew the answer.
"I claimed my omega," said Jace with a challenging air. "Before you could give him away to somebody else."
Rhaenyra sighed deeply. "I wasn't denying him to you for no good reason, I had bigger and more important plans for the only omega at my disposal and you knew that." It had probably been foolish of her to assume she could simply trust an alpha to not just do what he wanted. "But what's done is done," she continued resignedly. "You can't unclaim him. I suppose it was better you than one of my brothers, at least."
"That one-eyed cunt certainly wanted him," Jace growled.
"Don't call Aemond that," said Rhaenyra, but there was no force in her words. She'd learned a long time ago that a beta reprimanding an emotional alpha was pointless.
Later, as Luke lay entangled in sheets that stunk of sweat and pheromones, wrapped in Jace's arms with his knot swollen and locked inside of him, he felt more content than he ever had in his life. He wallowed happily in the thought of finally being a fully claimed and mated omega with a loving alpha.
"I can't wait for your next heat," Jace purred in his ear.
"Me neither," Luke purred back. Heat would be a completely different experience now that he was mated. He wouldn't need to shove anything he could find into himself in frustration when his alpha's cock would be right there, ready to mate him and knot him and breed him. Enjoyable as this mating had been, surely it would even better in the intensity of heat.
Jace's fingers trailed lovingly down Luke's side. "You're going to give me such beautiful puppies, Luke," he murmured. "With brown hair and brown eyes. Aemond can call them Strong, if he likes. They will be."
Yes, Luke thought, strong puppies with his strong alpha. He was a lucky omega.