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A Rut Worth Waiting For

Summary:

After the fall of King Zen, Prince Katsuki tried to adjust to his new life in Trev. He would be crowned the king soon, which he didn’t care about. The title, the power. It meant nothing to him. But getting to officially claim Queen Izuku in front of the kingdom was worth all of Katsuki’s stress and annoyance.

Except something was… off. Deep under his duties, a hunger grew. One that was sated for years with his constant fighting and war. Something he hadn’t needed to deal with before a strong omega stole his heart.

A rut.

Notes:

Welcome back to the land of Trev!! Have you missed Quenn Izuku and Prince Katsuki? Well, then jump in and enjoy these silly loves again.

This story happens about one month after Izuku's heat, but a couple months before the ceremony! As you can see, Katsuki is still 'prince' here.

But I can't wait to share this (kind of funny this one came right after TWTS's chapter hee hee if you read it you know)

ENJOY!

(See the end of the work for more notes.)

Work Text:

“Do you think we need more reinforcements on the west side of the new village?”

At Shoto’s question, Katsuki sighed, slumping lower in his seat. “Do we have the people for that?”

“After the recent training with General Tenya, we should have a new batch of soldiers to support them,” Aizawa answered, though Shoto frowned at the comment.

“Weren’t we sending them to Rennid? Since we’re seeing an increase in night pillaging there.” Which, when Katsuki rolled through the previous meeting with his captains the day before, sounded right.

“Could we split the dozen between the two? Let’s go over the possibilities of sending six…”

As Aizawa continued, Katsuki’s brain started drifting off. His eyes slid away from the map in front of them, staring out at the window. A beautiful afternoon waited beyond the castle walls. The impulsive side of the alpha wanted to leave the boring meeting and explore the lush land. He still had a lot about Trev to learn before he became the official king. 

But he had expectations he needed to uphold. He wasn’t the king yet. That wouldn’t be for another month, when the city would decorate itself in far too much festival dressings and make a big deal of something he didn’t need. From the moment he’d bitten Izuku, the only thing he wanted to celebrate was being able to officially call the beautiful omega his life partner. But before he could stand beside him ‘in the traditional sense’, he had to do the dog and pony show. Which meant a ceremony, some fancy parade, and a crowning in front of the entire kingdom. To get him ready for the expectations of the role, he had started taking on some of the meetings and job that he’d perform as a king.

But he was… irritated. Not at Advisor Aizawa or Shoto, who were doing their jobs to protect the people of Trev. His annoyance came from the increased tasks of his schedule every day. It had been like this for weeks, though today carried another aspect that soured his mood. That morning, when he would normally wake up with his mate snuggled in his arms, his eyes fluttered open to an empty bed. Izuku, being the queen (and sole ruler until crowning Katsuki at the ceremony), had risen early for a full day of meetings. 

Katsuki wasn’t a fan of long-term separation. After the near loss of his mate in the final battle, his alpha still didn’t like not getting a whiff of Izuku’s warm scent for hours at a time. But they were adults, and he needed to prove that he wasn’t a pup the omega took pity on. If Izuku was fine with their schedules pulling each other apart, then he would keep his complaint to himself. 

“Your Highness!” Denki’s sudden shout of his title when pushing through the doors of the advisor room came without warning. Instincts snapping forward, Katsuki let out a growl, making everyone in the room freeze. Denki’s eyes went wide at the dangerous noise, all movement stopping. Aizawa and Shoto didn’t speak up, but their sudden silence said enough. Katsuki himself became tense at the noise. He didn’t expect such an aggressive response to someone who couldn’t hurt a fly. Denki, out of everyone in the room, had the least intimidating aura around him.

But something about the sickly sweet scent was setting his alpha off.

Forcing the strange rumble in his chest down, Katsuki narrowed his eyes on the nervous omega. “What do you want, Dunce Face?”

“Um.” After blinking, the castle worker snapped back into his normal mood. “Queen Izuku is requesting your presence in the throne room.”

“Freckles?” Like flipping a switch, his alpha’s irritation swapped into a happy croon. He tried to keep his expression calm, but his embarrassment surged up without permission. The last thing he needed was to show the lack of control he had over his instincts in front of the two older alphas. Aizawa was one thing, but Shoto…

He would rather fight Zen again than let the ‘perfect alpha’ (people really needed to keep their fawning to themselves) see the age difference between them.

Clearing his throat, Katsuki moved around the table, waving to the two advisors. “Keep working on the plans for the villages. I’ll come back once my mate no longer needs me.”

Everyone knew who had left the bite on his gland, yet he still liked to bring it up whenever he could. Maybe that was immature of him, but Katsuki knew anyone that had the honor of being Izuku’s chosen alpha would do the same. If either advisor cared, neither showed it when bowing to him. Katsuki tried to ignore the twinge of awkwardness over the formal action before he followed Denki out of the room. 

Except, while moving through the castle, the irritation grew. Everyone that crossed their path followed the same action, dropping to bow and address him with his formal title. While he normally brushed off Trev’s traditional actions, today felt different. It itched under his skin, and his eye twitched at the seventh person’s formal address. Not only did it require him to interact with more people than he had time for, but it slowed him down from seeing Izuku. When Denki snickered at his obvious frustration, Katsuki kicked his heel. Seeing the omega stumble into two maids eased some of Katsuki’s nerves, but the moment of amusement washed away when the castle workers then rushed to bow. 

“I’m not even the king yet,” Katsuki muttered to Denki when the two scurried off. “If I can’t even sleep in my mate’s room until the official ceremony, then why do I have to do all the embarrassing parts?”

“Wasn’t that Queen Izuku’s choice? And from what the maids say—” Katsuki sneered at him, and Denki covered his nose while waving the other in front of him. “Your Highness, your scent is quite strong today. Did you take a bath with Aoyama’s pheromone oils?”

“No, and stop smelling me,” Katsuki snapped out, huffing while he shoved past him.

But his pace quickly came to a stop when Denki let out a sigh. “Don’t bite my head off. It’s not my fault you’re flaunting your pre-rut to everyone.”

“Hah?” Quickly, Katsuki spun around, sending his guide a heated glare. “What the hell are you talking about? I’m not showing anything off.”

“Have you not noticed your scent and agitation?” Denki seemed genuinely surprised by Katsuki’s silence. “I’m not trying to upset you, but how didn’t you realize your rut was coming? You’ve obviously had them before.”

“Duh.” He pressed his tongue to the back of his teeth, unsure why the next admittance brought heat to his face. “But I was already being sent off to fight Fuckface’s wars when I got my first rut. It wasn’t like I ever really had to deal with them. Anytime I got the itch, I would be too busy leading the army into war to deal with it.”

He hadn’t caught any spikes in his aggression, because he was always fighting for his life. It wasn’t often that he had peace under King Zen’s rule. Yet now, while Denki mentioned the common signs of pre-rut, he noticed a slight change in his body. The restless energy simmering under his skin, and the earlier spacing out. How his fangs ached in a way they only did when he wanted to bond with Izuku. The increased body temperature, and his thoughts always switching back to proving he was the best choice for his mate. Everything that he might have done on a normal day was turned up to the max level, and Katsuki only realized it once Denki brought it up.

Even during his morning training with Kirishima, his strikes and use of magic had a more aggressive edge to it. And though normally, a good fight with a powerful alpha would settle his annoying hormones, it hadn’t worked for Katsuki. Not the way it had before, when he was a soldier for Sange. His alpha still paced around, and demanded attention while he went through his duties and meetings.

And Katsuki had a pretty good guess why his old tactics no longer satisfied his instincts.

“Queen Izuku,” Denki called out when they entered the throne room, instantly dropping to a knee. “I have brought Prince Katsuki like you requested.” 

“Thank you, Denki.” Izuku’s soft tone instantly stole all of Katsuki’s attention, ignoring Ochaco and Denki’s presence to take in his mate. “I’ll be with you both in a moment.”

Izuku was just as beautiful as he’d been the first day Katsuki was thrown at his feet as a ‘gift’ from King Zen. Back then, Izuku was dressed in borrowed clothes that didn’t fit his body like the stunning tunic he currently wore. With the open sleeves exposing the burns and scars over his biceps and forearms, the soft purple silk that cuffed around his wrists was a perfect contrast to his green waves. It draped down to the floor, but Katsuki knew the lightweight material kept him cool in the warmer weather. With a gold chain acting as a belt around the loose-fitting outfit, Izuku hadn’t added any makeup or accessories to himself when addressing their people’s grievances. He wanted to meet them at their level, not expecting to be seen as a god.

But Katsuki felt like he was blessed when seeing the man who had given him a reason to look forward to living again.

Claim him, his alpha demanded, despite the bite openly displayed just above the chiton neckline. His thoughts went wild, running scenarios that he knew Izuku would never allow. Katsuki’s body thrummed at the idea of moving up the stairs of the dais, collecting his queen into his arms, and taking him for all the world to see. But the public space of the castle, meant for citizens to speak with their leaders and advisors to check in with the queen, wasn’t meant for such private displays.

Too bad his alpha didn’t care about decorum.

“And make sure Tsu—” Suddenly, Izuku stopped, his green eyes swaying slowly back to Katsuki. 

A spark of confusion highlighted the pretty hue for ‌a moment. Then, like the warmest wave of ocean water, awareness washed over Izuku’s face. Without saying a word, Izuku offered him a kind smile, holding his hand out despite being across the room. Katsuki didn’t know what to do with the action, body buzzing with energy despite his feet cementing him into his spot. His brain was aware of Izuku’s implication, but his limbs refused to take a step closer without something more. A strange whine started to grow in his throat, anxiety and frustration over his contradicting thoughts building inside him. He felt stupid, knowing everyone was watching him. The judgement made a flicker of shame dance over his ears.

And after a few seconds of the silence, Izuku’s expression grew fonder, tilting his head to openly display Katsuki’s bite. The rush of possessiveness shook his bones, and he snapped into action once Izuku spoke. “Come here, my love.”

His brain didn’t have any thoughts, only need. In seconds he was across the room, rushing up the few stairs to kneel at Izuku’s feet. The hand left open for him was the perfect place to drop his chin. He glanced up once settling against the palm, his alpha crooning when Izuku smiled and petted along his scarred cheek. Katsuki didn’t care if others saw his kneeling as pathetic or submissive, because he knew the truth. Izuku saw him as an equal, and neither of them had to throw their weight around to earn respect or affection. It was something he was still learning to accept, most days struggling with the demons from his past.

But with the haziness in his mind from his possible pre-rut, all Katsuki cared about was the pleased apple blossom pouring off his queen. 

“Denki,” Izuku said, though didn’t move his gaze from Katsuki’s. “You’re dismissed. Ochaco, please lead him out and give us twenty minutes before having my next citizen come in.”

“Of course,” she said, her giggle falling out when she moved across the room. “Come on, let's give our Queen time with his mate.”

“Can you believe he didn’t know…” 

But whatever Denki was saying faded out behind the closed doors of the throne room. Katsuki couldn’t pretend to care about the other omega, too focused on Izuku. Just feeling his touch and basking in his mate’s scent was shifting something in his brain. His body ached, the hardness in his loose pants throbbing with desire. Katsuki turned into the warm fingers on his cheek, teeth gently nipping the tips before nuzzling them. His growl lacked any anger when Izuku laughed, though he didn’t pull his touch away from Katsuki’s primitive scenting.

“Did you know your rut was coming?” Katsuki grunted, words feeling too strenuous to use. He only shook his head, mouthing along the silk cuff that kept Izuku’s wrist hidden. He wanted to bite through it and taste the omega’s sweet skin. “That explains why you were so rough on Kirishima this morning.”

“Mm.” His mind wanted to argue that the other deserved it, and he needed to prove to the world that he was the best alpha in the kingdom. Instead, his tongue stayed quiet, nose nudging the cuff with another low growl. 

Izuku used his other hand to slowly guide Katsuki’s head up, meeting his half-lidded gaze with an affectionate smile. “Come with me.”

And Katsuki was helpless to do anything but comply. Izuku pushed to his feet, guiding Katsuki to stand before leading him down the dais. Katsuki trusted Izuku enough to close his eyes, walking mindlessly with his queen through the throne room. He wasn’t sure if it was seconds or hours that passed before his mind constructed another thought, realizing that Izuku was helping Katsuki kneel on something soft. When he finally opened his eyes again, he was surrounded by blankets and pillows, the circular design reminding him of the nest in Izuku’s chambers. The only thing that was missing was their scents. 

From how Izuku settled into the middle of the space, he seemed ready to rectify the problem. Without any pressure, Izuku eased Katsuki into the new space with nothing more than his purr and the alluring scent now radiating off him. If Katsuki’s brain wasn’t submerged in his growing pre-rut, maybe his stubbornness over being treated like a child would have made him protest. But with the instinctual haze flooding his mind, all he could do was melt over Izuku. His mouth grew hungry as he pushed forward, needing to be on top of Izuku. The queen let Katsuki bully his way up his older frame, lips already parting for the oncoming kiss.

Katsuki wanted to move between Izuku’s legs and press their bodies together. His alpha urged him to pin the omega down into the nest and fill the throne room with his mate’s pleased moans. His arousal rutted against the side of Izuku’s thigh, pushing to deepen their kiss. Izuku’s mouth tasted like ambrosia, quenching the thirst inside his chest. But even with their loving kiss, and the pressure against his growing hardness, his alpha refused to settle. It needed more, craved to be connected with Izuku—

“You’re okay,” Izuku whispered against his mouth, a strong palm sliding through his hair. 

Katsuki shivered at the touch, goosebumps rushing down his spine when nails scratched along his scalp. Needing more of the pleasant sensation, he tilted his head back, following the touch as it slowly led him down Izuku’s body. His cheek bumped against the top of Izuku’s lap, and his mate offered another coo that melted Katsuki’s spine into compliance.

He must have made a noise, because Izuku pet through his blond strands again. “You’re such a good alpha, Kacchan. I’m so lucky to have you as my mate.”

“Mm.” Katsuki turned his face into the heat he could feel growing between Izuku’s legs, nose nuzzling higher on the man’s inner thighs.

“I’m going to give you exactly what you need, okay?” His intent was stalled when Izuku gently tugged on his hair, keeping his head still. “After I’m done with my meetings.”

Katsuki’s growl slipped out without permission, legs curling up into his stomach to add needed pressure to his arousal. The protest didn’t come out in a sentence, Katsuki’s throat refusing to work anymore. The second Izuku touched him, all he wanted was to bury himself into the omega’s warmth and never come out. 

But if Izuku cared about the noise of protest, it didn’t stop his affectionate touches. Crooked fingers slid down his throat, feather-soft when they brushed the bitten gland. The smallest hint of pressure over it made white-hot pleasure shoot through Katsuki’s body, his hips arching up into nothing. Struggling to keep his eyes open, he turned his head to look up at Izuku, helpless to the adoring expression staring down at him.

“Will you let me take care of you, Kacchan?” The love that bloomed through his tone made Katsuki’s heart throb, threatening to burst out from his chest. “Trust me to help you through this, the same way you did for my heat. Can you be patient with me?”

And though his body ached, wanting to pin Izuku down and bring them both pleasure, his alpha’s restlessness died down at the words. There was no stream of demands; the annoying instincts that rattled his core suddenly became placid. Like Izuku’s confidence somehow tamed the inner beast. The old man’s petting and ease in cradling him should have made him feel pathetic or infantilized. But all Katsuki felt was… safe.

So when he let out another growl, he gave up on trying to speak. It was embarrassing how quickly his alpha turned animalistic, using noises over conversation. Despite having ruts before, it had never dropped him so deep into his instincts. Something about Izuku’s handling of him was making him regress into a non-verbal state. And yet, where he should have shoved away and tried to collect himself, his mind only simmered in the quiet affection. He closed his eyes, accepting Izuku’s continued strokes through his hair.

“Your Majesty.” Momo’s voice echoed in the throne room, though it felt distant to his murky thoughts. He heard her steps hesitate, her voice a bit slower than before. “Um, I apologize. Ochaco told me—I’m sorry for interrupting—”

“You’re not.” As if to prove his point, Izuku used his nails again to bring out another pleased growl from Katsuki’s lax lips. “I think we had a meeting to discuss your upcoming plans for aid supplies in the medical huts? Can you walk me through your recent findings?”

“O-Of course.”

And that was how Katsuki’s afternoon went. He crooned and growled at Izuku’s quiet affection, head-butting the palm or turning to nip the crooked fingers when the motions stopped. Izuku shifted between massaging his head, rubbing over his gland, and running a firm hand along Katsuki’s curled spine. Katsuki lost pockets of time through the petting, head turned toward Izuku’s stomach to breathe in his scent. The arousal peppering the edges of his apple blossom burned Katsuki. His cock was leaking into his pants, and he knew his scent was exposing his growing rut. When he had a single moment of clarity, he realized anyone who came in would see him as Izuku’s pathetic lap dog.

“Kacchan.” Izuku cooed gently when one of the citizens left, leaning down to press a kiss to his sweaty forehead. “Just a few more, okay? Then my strong alpha can have anything he wants.”

Being touched and praised by Izuku was making him feel like a hormonal pup. He should have been picking Izuku up, ordering everyone to leave them along while carrying the happy omega to their nest. Then, he could be buried deep inside, mating Izuku again and again. Yet the scarred hands and the lull of Izuku’s voice as he spoke to each new person was keeping his final step of rut at bay. It was a reminder that, even as his body twitched and throbbed, he wasn’t alone in his struggle. Just like Izuku had trusted him during his vulnerable moment, Katsuki could do the same.

And then the hand on his head moved to his chin. Katsuki’s neck lacked any resistance as he looked up, barely able to keep his eyes open from the strange headspace he’d settled into. But any phase of calm acceptance vanished when a hint of pink colored Izuku’s cheeks. 

“It’s time,” Izuku said, thumb barely brushing his lower lip. “Let’s get you to our nest.”

His alpha perked up instantly, remembering what Izuku promised. It didn’t ask for permission when taking charge of Katsuki’s body, all lax limbs snapping into action. He rolled up onto his knees before grabbing Izuku around the waist, shoving an arm under the thighs he’d laid on for hours. Then, he was pushing up to his feet, rushing from the throne room like it was on fire.

Izuku laughed while wrapping his arms around Katsuki’s neck. “Kacchan, slow down! You’re going to crash into someone—”

As if summoning the situation into existence, a group of soldiers rounded the corner right as Katsuki approached it. His quicker reflexes helped him pivot at the last moment, jumping away to keep from crashing into the startled men. It only took a second to realize the leader of the group was Kirishima, whose brows furrowed as he called something out to him. But his mind couldn’t focus on the words, nose picking up on the alpha’s heavy scent. Even though he was mated, the two alphas before him weren’t, and having him so close to his omega—

A deadly snarl ripped through his throat, pressing Izuku closer to him while bearing his fangs at the trio. None moved, and a part of him enjoyed the fear and anxiety that spilled off their tense bodies. But with them standing in the way of where Katsuki needed to go, he was stuck. He refused to bring Izuku any closer to the potential threats, yet his nest was the best place to protect his omega. It was an easy problem his brain should have been able to figure out, but his heavy emotions and the lack of preparation—

“Love.” Izuku grabbed his face again, forcing him to look away from the three alphas to tilt his head down. Then, Izuku leaned up in his hold, the reassuring kiss wiping Katsuki’s mind of anything but his mate. It only lingered for a few seconds before Izuku’s tiny fangs bit down on his lower lip. The mock claim calmed his alpha, letting Izuku pull back just enough to bump their foreheads together. “I need our nest. I need you, Alpha.”

The declaration was enough for Katsuki to forget the soldiers inching away, his body kicking into action again. Katsuki couldn’t remember how he ended up in front of Izuku’s room, or if anyone else tried to stop them on the way. None of it mattered once he opened the door with his foot, sliding them both inside before kicking it shut. 

Once they were alone, Izuku tugged the hair on his nape. “Please put me down.”

“Tch.” He struggled with the request at first, arms flexing with the fear of Izuku being too far away. But when Izuku whined and squirmed, the hint of his distress was enough to make him comply. All he wanted was to please his omega. Even if that meant turning around and leaving the nest he so desperately missed, he would do whatever Izuku asked.

As soon as he was on his feet, Izuku spun around, locking hands behind Katsuki’s neck and kissing him again. This one was slower than the previous one, Izuku walking backwards as their lips melded together. Katsuki happily followed, hands grabbing Izuku’s hips to feel their natural sway as he moved. Fingers bunched into the soft material, the instant urge to rip it off running through his trembling hands. 

Once they reached the bed, Izuku broke the kiss, hands dropping to cover Katsuki’s. “Take off your clothes and get into bed. If you do that, I’ll take it off for you.”

The promise was enough to pull his touch away, quick to shuck off his pointless clothing. He didn’t care if he tore or stretched out the fabric, letting it fall wherever before rushing to the next. When he flipped over, a beautiful sight awaited his eager gaze. Purple silk fluttered to the ground, nothing but an alluring piece of matching satin blocking his view of Izuku’s warmth. Though he loved seeing Izuku naked, the pretty underwear felt like his stunning queen had wrapped himself up for Katsuki to savor later. Izuku’s fingers twitched by his side, as if wanting to cover himself, which confused his alpha. Why would someone meant to be worshiped ever think he should hide? 

“Take a deep breath, Kacchan,” Izuku directed gently, dropping one knee onto the mattress. 

It was only when his omega mentioned the motion that Katsuki realized his frantic movements. Sweat spilled off his skin, overheated despite not wearing any clothes. His senses were spiraling, trying to catalog everything that could hurt them while also admiring Izuku’s slow movements. The overstuffed chest heaved from the short gasps of air, panting over breathing. His fingers clawed into the nest, muscles twitching from the growing adrenaline. 

All he wanted to do was take care of his mate and be a good alpha. Anxiety zinged through him, not sure how to do that while suffering from his rut. Every time he tried to listen to Izuku’s suggestion and breathe deeper, the omega’s perfect scent filled his lungs. The aged, supple skin moved along his as Izuku crawled over him. He didn’t know what to do with his hands, terrified he would lose control of his alpha at the first touch. There were a hundred different things he wanted to do to Izuku, for Izuku. Yet he couldn’t get out of his own dangerous mind.

“It’s okay.” Izuku grabbed one of his tense hands, leading it up to press over his chest. The steady beat of Izuku’s heart rested under his palm, a soothing pattern Katsuki zoned in on. “You don’t have to worry about anything anymore. We’re safe here. Our people will protect us while you’re in rut. They love you too much to let anything happen.”

“Mhm.” He wasn’t sure if he believed what Izuku was saying, but he couldn’t focus on anything but Izuku when the omega slowly shifted. Katsuki’s eyes widened, body flushing with arousal, when Izuku lowered himself until he was kneeling between the alpha’s strong legs.

Maintaining eye contact, Izuku pressed one hand to his pelvis, inches from where Katsuki needed his attention. “Kacchan, you’ve… never been with another during your rut, right?”

Katsuki shook his head, hips arching up high enough to rub himself against Izuku’s cheek. The difference of the rough scar over his wet tip made Katsuki hiss, thighs quivering with desire. If Izuku minded the aggressive thrust against his face, the omega didn’t let it show in his smile. The hands he had learned by heart slid up his thighs, easing Katsuki back into the sheets before dipping his head down to follow.

“Let me help you relax, okay? A young alpha like you won’t last long the first round.”

I’m fine, his mind thought, wanting to show the queen the ways he could fully satisfy his needs. Despite not getting his hands on Izuku yet, he knew from his scent alone how aroused he was. Just the thought of grabbing Izuku’s thighs, prying them open, and getting his fill of the sweet treat made his arousal ache. Instead of letting Katsuki make good on his silent vows, Izuku guided Katsuki’s legs wider in a way that rarely happened when they were together in bed. 

“Don’t try to hold back.” And then, with a soft kiss against the base of his hardness, Izuku’s hand reached down between his own legs. Katsuki wanted to see what the omega was doing to himself, knowing he had learned every trick to bring his mate to the highest level of pleasure. But before he could try to take control of the situation, the missing hand returned, his now shiny palm wrapping around Katsuki before stroking down.

His mind went white with hot pleasure at the first touch. Hissing through his elongated fangs, Katsuki’s nails clawed through the bedding under him, body shuddering. He was almost overstimulated from how intense the pleasure slammed into him. It was like his first rut all over again, body thrusting up into Izuku’s slow movements without any restraint. He could feel drool pooling in his mouth like a dog with a bone, but he couldn’t feel any shame over his primitive display of pleasure. 

And from Izuku’s purr while guiding Katsuki’s jerky movements, he enjoyed the open display. There was no judgement or pity in the bright eyes watching him. If anything, it looked like Izuku was studying Katsuki’s snarls and groans, his thumb moving angles or changing the pressure of his grip depending on Katsuki’s noises. Part of that might have been because, whenever Katsuki managed to get Izuku along long enough to share their bodies, he took the reigns. He wanted to never let Izuku forget how beautiful he thought the older omega was. Here, all Katsuki could do was throw his head back, crying out to the ceiling of Izuku’s chamber while under the queen’s gentle control.

Any attempt to manage his overheated body vanished when a wet cavern sealed over his tip. Like a bolt of lightning hit his body, Katsuki’s entire frame spasmed,his arms locking up under his arched chest. Izuku’s mouth moved slowly over him, Katsuki’s size and his own inexperience limiting how much he could swallow. It didn’t matter; Katsuki felt like he was dipped into a bath of lava. His nerves exploded, voice nothing but desperate whines as his eyes blurred with his tears. He needed to be inside Izuku, but the pleasure his mate was giving him so selflessly wrapped around his core. 

His heels dug into their nest, the climax he’d needed for hours racing forward without permission. It was pathetic how quickly he came, sure his cheeks would be molten red if not already splotched from the heat of his rut. Cloth ripped under his touch, knowing he needed to hold onto it to keep from shoving Izuku’s head down. As his body trembled from the intense orgasm, his hips pumped up into Izuku’s hands, both replacing his mouth to help milk out the rest of his climax. Lashes feeling like anvils, he struggled to lift them. But he needed to see Izuku, so he fought against his alpha’s desire and opened his eyes.

Izuku’s flushed face was full of wonder while the last spurts of his abnormally long orgasm finished. His thumb stroked down his pulsing arousal, almost making Katsuki jerk his hips back from overstimulation. Then, emerald eyes turned up to him, shimmering with his adoration. Enamored despite Katsuki’s quick release, Izuku didn’t seem to mind the hint of come on his lips and face. His focus was simply on taking care of Katsuki and helping him through his rut. Anyone who saw Izuku right now would know who he belonged to. Katsuki’s new type of marking made his alpha croon, sated by the display between his legs.

Finally, Katsuki found his voice, though he could only force a short sentence. “Up.”

His arousal was already hardening again as Izuku licked his lower lip and nodded, moving up Katsuki’s rapidly recovering body. The soaked satin of Izuku’s underwear pressed along his hardness while the omega laid on his chest, kissing him. Katsuki groaned into the connection, his palms cupping the clothed cheeks before grinding Izuku against him. The new wave of Izuku’s slick left him just as wound up as he’d been an hour ago. Growling into the softer mouth over his, Katsuki tried to deepen the kiss while his hands ripped the dainty underwear off Izuku’s hips. 

Izuku pulled back from Katsuki, eyes dilated when he tilted his head up enough to nip the alpha’s nose. “Kacchan, behave.” 

“No,” he growled back, though didn’t fight when Izuku’s hands reached behind him to grab Katsuki’s. Not using any force, Izuku led Katsuki’s hands to lay on the nest, fingers petting the glands on Katsuki’s wrists.

“Let me honor my mate,” Izuku whispered, and Katsuki’s arms went limp against the sheets. 

Seeming pleased with whatever expression Katsuki wore, the omega shifted back, lifting his hips while his hand found his arousal again. Katsuki’s lips parted with a breathless moan when his tip rubbed along Izuku’s warmth, hips twitching with mindless need. Izuku didn’t tease him for long before he finally rolled his hips back, letting Katsuki sink inside him. With a gasp, Izuku dropped his head back, and Katsuki was spellbound as the queen sunk down on him. He looked perfect in Katsuki’s lap, like it was his personal throne. Just thinking of Izuku warming his cock while dealing with queenly duties made Katsuki pulse. Izuku, accustomed to his size by now, settled on his length with a few wiggles, their hips pressing together perfectly. 

Just like every time before, Izuku was amazing. Katsuki’s body trembled as Izuku set his knees on either side of his thighs, starting the pace without hesitation. He kept a strong control of the movements and rhythm, lacking the speed Katsuki would need to get over the edge. But for now, Katsuki was mesmerized. The image of Izuku’s pleasure cresting over his face while he rocked and ground his hips into Katsuki froze him. Even as his alpha begged to thrust up, his hands stayed limp where Izuku left them. Izuku was his home, his temple. If it pleased his mate to use Katsuki for his own needs, then Katsuki could fight off his rut’s demands. 

But the rope he had wrapped around his alpha was slowly tearing apart. The demand to hold Izuku down and knot him full of pups raged through him each time his mate gasped and moaned out his title. As his knot grew, demanding their bodies’ connection, Izuku kept bobbing on him like the energetic bunny he was. His eyes were unfocused, sometimes slowing to rotate his hips around and give his thighs a break. Each missed chance for his alpha to fully meld their bodies together made his inner beast snarl.

Finally, when the rope had become nothing more than a single thread, Izuku snapped his suddenly sharp gaze to Katsuki. His hips rolled down with more power, and Katsuki’s body convulsed at the sensation. Like magic brought them together, Izuku sunk down over his knot, sealing them together. He could feel Izuku’s climax clench around him, muscles massaging him to the brink of no return. The feeling of ‘home’ thrummed through his blood, Katsuki’s fangs growing again with the need to bite. Even as his climax rushed through him, his eyes honed in on Izuku’s neck, staring at the gland pulsing with his bite.

“Alpha.” Izuku, as if reading his mind, leaned down to moan into his ear. “Take what you want.”

Mine.” And then, Katsuki rolled Izuku over, pinning Izuku to the bed and shoving deeper inside. The rough movement of his hips was limited by being fully settled inside Izuku’s warmth, but he ground against their connection while biting Izuku’s gland again. Everything tightened around him, Izuku’s cry the perfect lullaby to Katsuki’s alpha. Feeling his body twitching and convulsing around him, Katsuki grinned against the mate he’d fully re-claimed as his own. The entire castle probably heard them. 

And that thought made pride ooze from his chest.

He wasn’t sure how many minutes passed before Izuku finally relaxed under him. A shaky hand slipped into his hair, simply holding his head as he tried to collect his breath. Katsuki only noticed how calm Izuku felt because of his body’s own reaction, which trembled despite grinding out two orgasms in such a short time. The heat from before wasn’t gone, just turned down to a lower setting. 

When Izuku’s hips twitched an inch away from the knot still pulsing inside, Katsuki growled, body going tense. Despite feeling weaker than normal, he still tried to wrap his arms around the omega, locking him in place. It was probably an evolutionary tactic, knowing alphas were most vulnerable to ambushes from rival alphas when knotted during rut. From how Izuku didn’t fight the tighter hold, nuzzling his temple, his smart omega already read about what to expect post-rut.

“You did so well.” Izuku kissed his forehead, keeping his lips against the sweaty skin. “It’s okay. I’m here for you. I’m not going anywhere.”

“Meetings.” He winced at the roughness of his voice, rotating his jaw a couple times before trying to speak again. “All your queen shit? And my tactical meetings—”

“Shoto implied you were potentially going into pre-rut when I met with him last night.” The mention of another alpha made him growl, teeth biting into Izuku’s shoulder. Despite the childish action, Izuku giggled, running his fingers through Katsuki’s hair. “That's why I had the nest ready. And I canceled all of our duties for the next two days. You and I can take care of your ruts without worrying about Trev falling apart.”

“Good.” Pleased with his mate’s proactive thinking, he turned his head, resting his cheek on Izuku’s collarbone while staring up at Izuku. Seeing his brain on full display made it easy for Katsuki to remember why he had fallen in love with the omega to begin with. “Smart and pretty.”

“Only the best for Kacchan,” Izuku answered, not denying the compliment. It was a step in the right direction, and Katsuki lifted himself up. His face hovered over Izuku’s, noses bumping from their natural sway.

“My Queen,” he whispered, smile growing when Izuku reached up and cupped his face.

“My King.” Their foreheads knocked together, both closing their eyes to enjoy the soft moment. In Izuku’s arms, he didn’t feel like a childish prince reaching for something he didn’t deserve. Here, he felt like the perfect match for an omega who needed a mate to help him see how special he truly was.

Katsuki’s moment of peace shifted when the hips under him wiggled, his body instantly heating at the teasing movements. Opening his eyes, he caught Izuku’s playful look before his arms slid away from his face, wrapping over his shoulders. 

“My demon,” painted his lips, Izuku’s words a code only they understood. With a growl, Katsuki stole the smile off his mate’s lips, hands grabbing his hips. Then with a squeeze, he thrust forward, sinking into perfection again.

For the first time in his life, Katsuki was looking forward to the inconvenience of his rut.

 

Notes:

Ugh I missed them so MUCH. I loved their dynamic in this story, and just getting to write them in love and Izuku starting to feel confident in their pairing... GOD they're so cute.

Anyway, hope you enjoyed!

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