Katsuki was clever and brilliantly smart, but not everyone knew that. He hid his intelligence behind a façade of anger issues, overflowing pride, and his God given beauty. 

His parents were royalty, they ruled with grace and an iron fist, they were kind to their fellow men. Enemies, on the other hand, were spared no such mercy by the King and Queen, by Masaru and Mitsuki Bakugou. With his parents royal lineage, well truthfully his fathers royal lineage, Katsuki was destined for royalty. Masaru had picked Mitsuki up at some festival and mated her, no one really knew how she came into the King’s life. She was living fire, all sparks and teeth, and he was living water, all peace and smiles, they burned and cooled each other in a balance that defied reason. Still, despite their love and dedication, Mitsuki bore only one child, her body not able to withstand more than that. Many pleaded with Masaru to take a mistress to ensure more heirs as many believed Katsuki to be weak due to his mothers terrible struggle to conceive and birth him. 

Masaru refused, he loved Mitsuki and swore that if anyone dared to hurt her, or encouraged him to be unfaithful, would feel his wrath.

Despite the pain of never being able to bear more children, Masaru and Mitsuki loved Katsuki with their whole hearts. He was their miracle baby. Mitsuki and Katsuki nearly died many times during the pregnancy and after, but they fought to survive numerous times. Neither daring once to give in or give up. It was touch and go for a while with Katsuki, he was born so small and weak. His cries sound more like whines, and he slept for long hours and barely rose to eat. 

Mitsuki always slept fitfully, afraid each night would be the night her small babe would fall asleep and never wake up. She refused to allow Katsuki to leave her side, no wet nurse would be good enough for him, what if they didn’t check to see if he was breathing? What if they plotted against them and left Katsuki to whine himself into a coughing fit that he couldn’t recover from? She worried for him so much, breaking all traditions and normalcies, Mitsuki tucked Katsuki to bed with her and Masaru every night. Wrapping her arms around the baby and lying her fingers against his side to feel him breath. 

Masaru, despite many warnings from other women, never grew weary or upset at a baby being between them at night. Instead he woke with Mitsuki and watched her feed the baby, kissed her shoulder and held her as she cried while consoling Katsuki through a whining-cough fit. Masaru became Mitsuki’s rock as she cried herself to sleep most nights, praying for her baby to gain strength. For him to wail and kick like a normal baby his age, for him to no longer look so pale and wheezy. 

Katsuki’s chest continued to rise and fall with wheezy, stuttered breaths. Mitsuki pressed the tips of her fingers against Katsuki’s tiny ribs, and fell asleep praying and crying once more. 

Mitsuki woke with a start, something had woken her up and it was loud . Blearily, she looked around only for something small and angry to smash against her cheek. Looking down, Mitsuki’s eyes immediately watered and she covered her mouth with her hand. 

There between her and Masaru was Katsuki, kicking and screaming. He wiggled, and wailed as his tiny fists clenched and thrashed. 

No soft, weak, whining, with barely moving legs. No wheezing, no coughing, no lack of breath. Katsuki was fighting and winning. 

Mitsuki scooped him up and began rocking, “Shh, oh, shh Katsuki. Masaru, wake up. Listen to him,” Mitsuki kicked Masaru who woke up with a snort. 

Blearily, the two of them sobbed and sniffled as Katsuki hungrily, and aggressively, sucked down milk. It messily ran down the side of his cheek, and despite the ache from how harshly Katsuki drank, Mitsuki dragged her finger across his small face. 

“Eat, baby, eat as much as you need…get big and strong for us,” She whispered as she touched her fingers against Katsuki’s tiny ones. His hand gripped her finger tightly, his fierce grip caused such joy in Mitsuki she let out another small sob. 

****

Since Katsuki could remember, his parents would dress him in the finest linens, place a crown of gold on his head and whisper the destiny of his life in his ears. 

“You’re gonna be King one day, Katsuki,” Mitsuki would smile as she adjusted his collar and cloak on his small five year old shoulders. 

“You’ll make the kingdom proud...you make us so proud,” Masaru would kiss the crown of Katsuki’s head before placing the golden crown, encrusted with rubies and diamonds, on his blond head. 

The crown grew with Katsuki. As he grew taller and larger, the crown had more gold applied to fit his head. Though, they all knew Katsuki’s presentation was approaching. 

Mitsuki and Masaru believed he would be an alpha, like his father, most men were after all. Katsuki knew better. He knew himself better than he ever let on for his parents. In his heart and soul, he knew that sooner rather than later his body would fall into heat and he’d come out the other side an omega. He knew it. 

He was smaller than the other boys, his parents said that was from his traumatic birth and weak beginnings; Katsuki found himself prone to hoarding soft things in his room, which his parents said was because Katsuki struggled to maintain body warmth in the winter. Though, Katsuki would say he ignored many omega habits. Such as the timid and meek attitude, Katsuki didn’t have time for an alpha’s approval. 

Which is how Katsuki ended up here, walking alone in the woods surrounding his family’s castle. He used a stick to smack tree branches and knock down orange leaves. Katsuki knew he didn’t have much time left for activities like this. He saw what unmated royal omegas were treated like at plenty of balls and banquets. A chaperone would accompany him wherever he went, a mated alpha, or a beta most likely. His parents would likely make him change his clothing style to match omega fashions. And worst of all, he would lose his right to his freedom, his throne, and his kingdom. 

He smacked another branch this time harder, angrily watching the waterfall of red and orange leaves rain down on him.

Katsuki would be mated off to one of the other royal families' alpha sons, and the two kingdoms would combine. Or, Katsuki would be reluctantly granted the right to host a duel where royal alphas could compete to win his hand, and Katsuki would be allowed to pick out of the four winners. Either way, it ended with Katsuki being dressed in itchy, stiff corsets sitting on the left of some alpha while he led Katsuki’s birthright.

Katsuki was mad. His whole life his parents had been grooming him for the pressure of ruling a kingdom, of being a King, but now since he had the ability to make babies he couldn’t? He’d be forced to step aside and let some stranger rule his kingdom. 

Katsuki tried to think of ways to hide being an omega, but he came up short every time. Heats were the biggest issue because twice a year Katsuki would fall into heat and crave the touch of an alpha once his body finished maturing. Omegas in heat scent spiked and his thoughts would be cloudy at best.

There seemed to be no hope for Katsuki. 

He cracked his stick against a branch, shattering it. Sending wood pieces everywhere and the other half of his stick to the ground. He screamed, and shouted, he launched the other half of his stick into the woods as he dropped down into a crouch. He dropped his head to his knees and took deep shaky breaths trying not to cry. “Fucking stupid. I fucking hate everything. Maybe I’ll just run away...that way I can at least pick my own damn alpha.” he sighed, sniffing sharply. 

“Um, you, uh, dropped this?” A hesitant but deep voice surprised Katsuki. His head shot up to see a red head standing there sheepishly offering Katsuki his stick back. 

“Who the fuck are you?” he snapped, Katsuki wasn’t an omega yet. He could still fight without being told it was improper and wrong of him to do so. Especially with an alpha, and Katsuki could smell that this dude was an alpha. Still, he didn’t seem much older than Katsuki.

The red head smiled, “I’m Eijiro! I live in the kingdom next door,” 

Eijiro...the name was familiar, but Katsuki wasn’t placing it. “What are you doing out here?”  he snapped, eyes boring holes into the redhead. 

Eijiro shrugged, “Walking, a bit of flying,” he gestured upwards and Katsuki realized he was from the Dragon lands, a dragonborn. “What are you doing out here?”

“I don’t fucking know? Didn’t want my parents hovering over me as they wait for me to present.” Katsuki barked, still glaring at the red head, daring him to do something.

The other seemed confused, “You haven’t presented? You smell like you have though?” 

Fear flashed in Katsuki’s mind. Was he presenting now? Way out here, all alone? With a stranger in his midst? “Do I smell like I’m presenting?” panic flashed through Katsuki’s words. 

“No,” the red head shrugged, “but you smell like an omega. What kind of omega goes places alone? Especially way out in the woods where weirdos hide?” 

“Me,” Katsuki felt his heart rate slow, thankful his time hasn’t come yet, “I’m not really down with the whole ‘submissive and needy’ bullshit. Only person who gets to see that side of me is my mated alpha.”

“Do you have an alpha?”

“No? How the fuck would I when I’m not even fully presented? You asked a lot of dumbass questions, Red.” Katsuki dropped himself fully to the forest floor, uncaring how this red head sees him. The dude was clearly the same age as him, and mostly just seemed curious. In fact, seeing Katsuki sit down, Eijiro followed suit.

“Oh,” Eijiro smiled as he crossed his legs and tucked them close, “you never told me your name?”

“Katsuki.”

“Katsuki? As in Katsuki Bakugou?”

“How the hell do you know me?” Katsuki snapped. 

Eijiro smiled, “We met at one of your family's balls! I had black hair then, it changed when I presented. But we played on the balcony!”

A fuzzy memory of playing with a sharp toothed black haired kid flashed in Katsuki’s mind. They had gotten along well, but Mitsuki and his mother fought over them. Masaru had mentioned something about how perhaps they could mate when they got older, but Mitsuki and Chisa, Eijiro’s mother, began fighting immediately over whose son would be the omega. Katsuki hated to say it, but his mother was wrong, and if she had spent just a bit more time watching them play...she could have seen that. Even way back then Katsuki had known he would end up being an omega. Something that the black hair kid had also known.

“I remember you.” Katsuki nodded. 

Eijiro smiled brightly, “Do you wanna be friends again?”

It was uncouth for an unmated alpha and unmated omega to be friends, even mated alphas and omegas were rarely friends, but Katsuki didn’t care. He liked Eijiro. Liked how the red head treated him normally despite knowing his upcoming designation. 

Once Katsuki presented, would Eijiro treat him differently? Katsuki knew the other royal princes would and there was only so much time left before everything changed for Katsuki. 

This was perhaps his last chance to gain an ally before his body changed forever, “Meet me here tomorrow?”

“Okay!” 

****

Secret meetings became more and more frequent. It started when Katsuki was twelve, on the cusp of presenting while Eijiro had presented early at thirteen, but they continued for years. Even after Katsuki presented, which he did very late, he had been fifteen when his body finally caught up to everyone else. 

He found ways to escape his escorts and guards. Him and Eijiro thought it was increasingly hilarious that Katsuki was swift, cunning, and his natural cinnamon scent washed away so quickly in the open air. All the guards, and even the bloodhounds, would wind up losing his trail and Katsuki was free to do whatever he wanted. No one had been able to latch onto his scent and keep it, except Eijiro, the red head could find Katsuki within minutes, no matter how thin, tainted, or covered Katsuki’s scent. The blond was the same with Eijiro light, fresh apple scent. 

They spent so much time together and it felt so natural. They could talk for hours, never finding a dull moment. They’d take walks through the woods, and on dreary, cloudy days, Eijiro would flip Katsuki up onto his back and fly. 

It was when Katsuki barely escaped detection on his sixteenth birthday that things changed. 

His parents were planning some big ball, wanting Katsuki to meet some of the available alphas that he could mate. And Katsuki’s guards were as angry as ever when they had just finished berating Katsuki on the dangers of his constant disappearances when Katsuki smiled menacingly, before leaping over the handrail, easily giving them the slip. 

“Fucking- GOD! I’m so tired of that insolent brat of an omega. Needs an alpha to teach his ass who's in charge!” Katsuki bit his lips to hide his laughter as a guard walked past him, unseeing and left. 

Katsuki scampered out into the woods, blond tail furiously wagging in excitement. 

That had been a new thing. When Katsuki fully presented his body began displaying fox traits, very similarly to his father. Once waking up from his first heat, Katsuki’s ears had migrated up into sharp points, and a blond fox tail sat on his behind. 

Eijiro liked them a lot, so Katsuki wasn’t mad, but his mom and dad were blown away with him presenting as an omega and gaining fox traits (animal traits are more common on female omegas and male alphas). Katsuki had sighed, rolled his eyes, and tried to explain how he had always known he’d end up being an omega.

Katsuki dodged trees, and then dodged the traps some of the guards set up to keep Katsuki from the woods. He could smell them, the scent was unfiltered and uncovered. 

He slowed down once he grew closer to the general area that he and Eijiro hung out. 

“Eiji?” he called, and got no reply. He shrugged and moved to the small clear patch they liked to lay. He had barely sat down when a half shifted Eijiro dropped out of the trees. 

“Kats,” he purred, a giant smile taking over his face as he step forward and swept Katsuki off the ground into a hug, “Happy birthday,” 

Katsuki flushed but tucked his chin over Eijiro’s shoulder, “Thanks,” 

“Can I...can I hold you like this?” Eijiro asked softly, one hand adjusting to sit under Katsuki’s thighs and ass.

“Yes.” Katsuki answered without hesitation, but the longer he sat there with Eijiro’s increasingly large arms wrapped around him the more Katsuki couldn’t imagine anyone else. The mere idea of some other alpha daring to touch Katsuki made him want to snarl and hiss. Which is how Katsuki found himself whispering, “Only you can hold me like this, Eijiro.” 

The sharp inhale told Katsuki that Eijiro had heard him, there was a moment of silence, before Eijiro whispered back, “Does that mean-?” 

“Yes. Eiji,” Katsuki sat back in Eijiro’s arms, fully trusting Eijiro to support his weight, “when I turn eighteen, and they make me mate someone, I will do anything for it to be you.” Katsuki left his hands resting across Eijiro’s shoulders as he stared into the redhead’s eyes.

The red of Eijiro’s eyes was practically gone, swallowed by black, “God...I want you now. I want to make sure no one can take you away from me. So, no one can ever hurt you or make you bow to them. I want to love you forever,”

“Then love me, Eiji, wash me in you...just no biting yet, but it can be my birthday present,” Katsuki shifted, wrapping his legs around Eijiro’s waist and smiling as he curled his fingers into the back of the redhead’s long hair. 

Eijiro breathed heavily for a moment before surging forward to capture Katsuki’s mouth in his. They both hummed and moaned into the kiss, and Eijiro wrapped one of his hands around the base of Katsuki’s tail. His other large hand held Katsuki’s back, pulling him further and closer into him. Clothes fell away quickly, and Katsuki knew that no one could ever love him the way Eijiro could. 

Katsuki stumbled home with a goofy smile on his face. His clothes were slightly askew and his collarbones, shoulders, and chest were littered with small bites and hickeys. Nothing permanent or mating, but enough that if anyone saw they would know Katsuki had an alpha. 

The only downside was Katsuki knew him and Eijiro would have to continue their small stolen moments for two more years. If Eijiro mated Katsuki before he turned eighteen, he could lose his ability to keep his claim as Katsuki would still technically belong to his parents. 

Still, Katsuki had no doubt in his dragon prince. He knew Eijiro could beat any schmuck that wished to take him away from the dragon. Katsuki would belong to Eijiro, and he couldn’t wait.

****

Two years was a long time, and they worked through it as best they could. Now, though, the games were here and Katsuki’s parents were thrilled to mate off their son. They couldn’t wait, and honestly, neither could Katsuki. 

The best part, and Katsuki’s favorite part, was they rigged the games. Together, Eijiro and Katsuki devised a horrendous diabolical plan. And Katsuki’s parents would never know, would never suspect their darling, small, weak, omega son had ruined all their plans and every tradition to date.

The games were old traditions. There would be randomly selected sporting events that the alphas would compete in. Once the four finalists had won, the omega was granted the choice of which alpha had won their heart and affection. 

Katsuki was a highly desired omega, one of the few male omegas, making him a prize, and his fox traits made him even more desirable. 

So, Eijiro met with his prince friends, and Katsuki snuck into his parents office. Eijiro got three of his strongest alpha prince friends to agree, and Katsuki got the events to be the alpha’s strong suits. 

The final four would be who Katsuki and Eijiro decided. Prince Izuku Midoriya, Prince Hitoshi Shinsou, and Prince Tetsutetsu Tetsutetsu. All of which either had omegas amongst Eijiro’s court staff they were interested in, or none of them wanted to rule their own kingdom. If they pledged allegiance with Katsuki and Eijiro, the duo would happily take responsibility for their lands, keep them on as advisors, and they could finally be allowed to mate the omegas they desired. 

It was a win-win all around. Eijiro was excited, he loved being King, and Katsuki couldn’t wait to do it beside him. Before he presented he was so worried about losing his standing, but with Eijiro, and all their prince friends, Katsuki realized he didn’t have nearly as much pressure on him and he loved it. 

He could put in his advice or opinion and they would listen, or they’d ask for it. Or he could go parade around the halls in a sheer dressing gown and lure Eijiro back to their room. He shivered in anticipation, all his dreams were so close to reality. Katsuki was about to receive all of his dreams and desires. An alpha that respected him and saw him as his own person, but also understood Katsuk didn’t want to do it all by himself. He gave Katsuki the greatest gift; choice.

Now, he just had to watch his future mate and new friends beat the shit out of some worthless, egotistical, royal alphas with the desire to keep Katsuki as nothing more than a place to stick their dick. 

****

The games began, and it was brutal. Izuku, Tetsutetsu, and Eijiro were bulldozers, taking large alpha out, game after game. Hitoshi rode their coat-tails, more than happy to stay back and take care of who they missed. 

The sword fighting was incredible, the four alphas teamed together and nearly massacred the remaining contestants. What should have been a multi-game event, turned into five events where the four destroyed every other competitor. 

Katsuki glanced at his parents, he was unrealistically excited. His tail was swishing and thumping happily on his lavishly cushioned throne, but he carefully kept his tucked behind him so they couldn’t see. The last thing he needed was for them to realize he rigged the game, they might revoke Eijiro’s right to play, or worse to mate him. He had to act somewhat forlorn and uninterested because he had been so against the mating since he presented. It’s only in the last couple months that he changed his tune, which was entirely because of his and Eijiro’s plot. 

By the end of the night, Eijiro and Katsuki would be the kings of five kingdoms. 

It was a landslide victory. Eijiro, Izuku, Hitoshi, and Tetsutetsu stood before Katsuki, panting, sweaty and covered in the blood of their enemies, but without much more than a few scratches and raw palms from the leather sword handles. 

Katsuki pretended to think for a while, he could feel the entire kingdom’s eyes on him. Could feel them holding their breath as their dainty, weak, small, omega prince Katsuki chose one of the massive brutal alphas before him. Could feel their fear that Mitsuki and Masaru had made a mistake, and that they were sending Katsuki into the belly of the beast with one of these alphas. But when he got close to Eijiro and could smell his apple scent, he nearly ran. He jumped up into the alpha’s arms and nuzzled his face into his neck. 

“We did it.” He whispered into Eijiro’s skin. 

“We did...you’re all mine now,” he hummed, barely skimming his lips across the column of Katsuki's neck. He shivered and sat up, looking into Eijiro’s eyes, before smiling. 

“HIM! I chose Prince Eijiro Kirishima as my mate!” Katsuki shouted and the crowd cheered, Eijiro smiled, and kissed Katsuki breathless. When they broke apart, Eijiro spun them around and Katsuki laughed even as he saw his parents. 

His mother’s eyes thin in disbelief and skepticism, and his fathers wide in fear and confusion. They hadn’t expected Katsuki to choose the dragonborn, nor had they expected him to be so happy about it. His mother was skeptical, but it didn’t matter. Not as Eijiro was carrying Katsuki from the arena, and the other three alphas calmly followed. Not as Katsuki knew that once Eijiro got him into the dragon's room, he would be thoroughly and permanently claimed. 

No longer would Mitsuki or Masaru have any control over the decisions concerning Katsuki. From the moment Eijiro would sink his teeth into Katsuki’s scent gland, those decisions would be Eijiro’s by alpha rights. 

“It worked, your majesty,” Hitoshi said once the entered the exit tunnel of the stadium, the smirk on his face was clear in his voice. Eijiro laughed as he set Katsuki on his feet, holding the blonds hand tightly as they left. 

“Of course it did, Katsuki is too brilliant for his own good,” Eijiro gushed as he kissed the crown of Katsuki’s head. The blond smirked as he leaned further against Eijiro’s side. 

He licked his lips, “Once Eijiro and I mate, you know the next step, correct?” 

Izuku stepped up to Katsuki’s other side, “After battling for the hand of the Bakugou omega together, we discovered ourselves to be a wonderful team with Eijiro as an excellent leader. To keep our lands prosperous and safe from outside threats, we are combining our lands into one large kingdom under the rule of Eijiro Kirishima with us standing by his side to help guide and lead.” Izuku narrated perfectly, Katsuki knew the freckled alpha had rehearsed well as well as had the transmission letters all prepared for send off. 

Tetsutetsu threw his arm around Eijiro's shoulder and smiled, “Brothers in arms doesn’t sound half bad, I’m looking forward to getting my advisors off my back and just being free of it all,” 

Eijiro nodded, “I’m looking forward to seeing how the different cultures and people unite. I’m sure Katsuki has plans for it all,” 

“Oh I absolutely do, but for tonight let's enjoy our victory and we’ll finish our total success tomorrow. Deku, I expect you to have gotten Halfie informed of our plans?” 

The large alpha blushed, “Y-yes…he’s very excited for our upcoming invasion,” 

Katsuki cackled, “Good. Soon the entire continent will be ours, boys,” 

All four alphas began to cheer as they exited the stadium. 

****

Upon entering the dragon's room, Katsuki found himself on his back with red hair cascading all around him. He smiled as he twirled red strands around his fingers, “Excited, are we?” he teased. 

Sharp teeth grazed his throat and Katsuki shivered, “You have no idea, Kats, I’ve waited years to have you.” 

Katsuki snorted, “Eijiro, we had sex two weeks ago,” 

Now it was the dragon's turn to snort, he sat back and gazed down at Katsuki’s face, “That’s not what I meant. Since I met you in the woods, Katsuki, I have wanted to make you mine. I’ve never met an omega as smart or as lively as you. The idea of some other alpha coming in and crushing the fire that makes you so wonderful makes me violent,” 

Smiling in amusement, Katsuki leaned his head further back and it drew Eijiro’s attention back to Katsuki’s pale throat, “Oh yeah? Worried some other alpha would snatch me up? Steal me away? Keep me barefoot and pregnant with no voice? Leave me in the sheets to be nothing more than a toy and an heir maker?” 

The snarl was vicious and the steam that billowed from Eijiro’s nose left Katsuki with goosebumps, “Don’t test me, Katsuki. I’ll end up with a death on my hands,” 

“Lucky for you, there has never been another,” Katsuki reached his arms back up and locked them behind Eijiro’s neck to pull him closer. “No other alphas has had the privilege to see me the ways you have, Eiji,”

“Good,” Eijiro huffed, and Katsuki smiled again as he yanked Eijiro the rest of the way to meet their mouths. 

Immediately, Eijiro's large tongue was licking its way into every corner of Katsuki’s mouth. He hummed in satisfaction as he was devoured, then large calloused hands slipped down to Katsuki’s hips. 

In smooth, practiced fashion, Eijiro had Katsuki’s pants off without ever breaking the kiss. Katsuki turned his face further into the now aggressive kiss, biting at Eijiro’s lips, and feeling the redhead unlace his tunic and pull it away. 

In a flurry of movement, Eijiro was naked as well and Katsuki was yanked up into Eijiro’s lap. Katsuki wiggled, adjusting his seat on Eijiro’s large thighs, feeling the firm press of Eijiro’s cock on his ass. 

Eijiro was panting, “We don’t have to rush, we can take our time, love,” 

Katsuki scoffed, “Fuck that, take me. Take me now and never let anyone else have the chance,” he lifted his ass up, reached back and grasped Eijiro’s cock before lining it up to his wet hole. 

The choked gasp Eijiro made as Katsuki began to sink down was all the confidence boost Katsuki needed as he sank lower. Eijiro’s massive cock stretched everything wonderfully, deliciously large and slightly painful. It was everything Katsuki needed as he panted and threw his head back as his ass met Eijiro’s hips. 

“Fuck, Kats, no prep?” Eijiro hissed between his teeth, his fingers squeezing bruises into Katsuki’s hips and thighs. 

Katsuki rolled his head and dropped it on Eijiro’s shoulder, shivering at the intense stretch and pain, but also the pleasure of Eijiro pressing against all his sensitive spots. He was desperately trying not to drool, “Don’t need it…I spent an hour doing it this morning.” 

Eijiro’s hips rolled unconsciously, “Fuck! Kats, you can’t say stuff like that, I’ll lose control, baby,” 

“Maybe…” Katsuki slowly and wobbly sat up, the weird warmth creeping up his spine felt so similar to a heat, as if his body was sending him into heat because it knew Eijiro was about to mate Katsuki. Katsuki licked his lips and forced himself to finish his words as he began carefully rolling his hips down onto Eijiro, “Maybe I want you to. Maybe I want to be plowed into the mattress and leave everyone wishing it was them under you.” 

“Oh my god, Katsuki, you’re gonna kill me,” Eijiro growled as his hands gripped his ass harder, making Katsuki hiss at the pain. Still, Katsuki knew he had won as Eijiro’s hips changed from making small rolls to small hesitant thrusts. 

“Harder, Ei, faster,” he whined, dropping his forehead back down against Eijiro’s shoulder. 

“You’re so wet, Katsuki…you smell so fucking good!” Eijiro began licking and biting all along Katsuki’s neck as they both began frantically moving their hips. Katsuki threw his head to the side giving Eijiro more room. 

Eijiro growled as he shoved Katsuki back against the bed and fully let loose, “You’re too much, Katsuki, I’m not gonna last,” 

“Bite me. Bite me, Eijiro. Bite me!” Katsuki gasped as the new angle let Eijiro hit his prostate dead on and he felt tears form in his eyes. 

A larger pressure built against the base of Eijiro’s cock as it sank deeper and deeper into Katsuki before it slipped in and wouldn’t come out. Katsuki cried out as Eijiro’s hands released his hip and began furiously stroking his cock, “I’m coming, Eiji, I’m-” and everything turned white as pleasure surged through Katsuki. 

Eijiro’s knot was locked in Katsuki but the sudden pressure added to his knot by Katsuki’s pulsing walls had Eijiro roaring as he sank his teeth into Katsuki’s neck. 

Katsuki screamed, nails raking down Eijiro’s back as he felt the surge of Eijiro’s burning hot seed wash his insides as well as the flood of sensations caused by Eijiro’s teeth in his neck. 

It took a while before Katsuki fully felt aware of himself again, but as he blinked his eyes open, Eijiro’s big smiling face was the first thing he saw. 

“We did it…” Katsuki croaked, a smile grew on his face despite his exhaustion, “We’re mated, Eiji,” 

Eijiro’s teeth still had some of Katsuki’s blood on them, and he pressed kisses all across Katsuki’s face. The blond hummed, feeling where he and Eijiro were still locked together. “I love you, Katsuki. I love you so much, I can’t wait to see you in a crown with our babies around you and still being the badass king I know you are. God, I love you,” 

Katsuki puffed a laugh as he settled further into Eijiro’s arms, dragging his fingers through long red hair. His tail desperately trying to wag where it was trapped beneath him, “I love you too…you’ll look sexy as a king,” 

“Oh don’t start that again while I’m still inside you,” Eijiro groaned, pressing his face against Katsuki’s throat. “Wait, Kats, you gotta bite me too!”

“Later, first a nap, a bath, then round two, babe. Mating bites are way more intense than I thought they’d be,” Katsuki dropped his head back on the pillow, and kept his hands in Eijiro’s hair as he closed his eyes. 

Eijiro chuckled as he kissed around Katsuki’s throat, “Fine, a quick nap and bath but just know I’m not letting anyone in here till our mating goes both ways.” he huffed before collapsing all his weight on Katsuki, just the way Katsuki liked it. 

“Anything you want, babe.” Katsuki yawned sleepily, more focused on the feeling of Eijiro’s warm breath on his sensitive mating bite than anything else. 

“I love you, Katsuki,” Eijiro kissed his skin once more, and Katsuki hummed. 

“'Love you too, Red,” and together they drifted off, knowing that they were finally together and no one could separate them.