Chapter Text
‘Need you, Heat’
When his phone buzzes Satoru can't hide the Cheshire cat grin that spreads across his face. This was the text he'd been waiting for, he's not even trying to pay attention to Ijichi’s nervous stuttering about some report that's overdue.
“Sorry Ijichi but you're going to have to manage without me for a few days” his voice is light and teasing, he's the happiest he's been since before last Christmas eve.
None of his colleagues know about the little ray of sunshine he's about to make his forever. He’ll tell them in due course but not right now. At the moment he gets to keep his omega all to himself and the part of him that's more beast than man would keep it that way forever if he could.
Yuuji is the only good thing in this shitty world, he didn't want his innocence tainted by the rot of Jujutsu society. He knew the moment he announced that he'd been fortunate enough to find himself an unmated omega all eyes would be on them.
The crusty old fools on the council would rub their hands together in glee at the prospect of strong pups. Lord knows they can't stand Satoru, not that he gives a damn. But he wouldn't put it past them to try and replace him with his own pups. Not that he’d ever allow them to sink their claws into his pups with their putrid ambitions.
More to the point, Yuuji wasn't your average omega. He wasn't soft and demure, he was strong and lithe, his body built for battle despite his secondary gender. Satoru could tell that Yuuji was the kind of omega that would protect their pups with his life.
The only delicate things about him were the elfin features of his face and the sakura colour of his hair. Even his scent was far more robust than that of other omegas, sharp and citrusy with only the barest hint of floral honey underneath.
Perhaps that was how Itadori Wasuke had managed to keep his grandson from being stolen away by some desperate alpha for so long. In modern society alphas were becoming a rarity and omegas were even fewer and far between. This was an issue that both the mundane and sorcerer societies were having to face. There weren't enough omegas being born, alphas had gone from keeping harems to being lucky if they could even find an omega to mate.
They could of course still produce pups with betas but those pups wouldn't be as strong. In sorcerer society that was a huge problem, Satoru was the strongest but even he wouldn't live forever. The Gojou clan would need strong heirs if it was to continue its glory.
The Zenin were a prime example of a declining clan having been plagued with a litany of weak pups with lack lustre techniques. The only strong pups the clan had produced were Megumi who was born after his father had left the clan and Maki who was a pure blooded Zenin but didn't possess any cursed energy at all. The Zenin being the idiots they were, shunned Maki while coveting Megumi. Thankfully he'd taken Megumi under his wing from the age of six meaning the kid could enjoy his youth as a regular sorcerer without the pressure that came from being a member of one of the three major clans.
And even though the Zenin could interfere with Maki’s promotion as a sorcerer they couldn't stop her from learning to become one. If Satoru’s plan of raising up strong sorcerers to replace the idiots on the council bore fruit. Then the future of all young sorcerers would be brighter. Most importantly his society would become one he was proud to have his pups be a part of.
Right now though all he wanted was to make a life with Yuuji, pups came later. He wanted to enjoy introducing his mate to a whole host of new pleasures and experiences. When he'd met the young omega all those months ago in Sendai his grandfather had just passed away. Luckily Satoru had managed to retrieve the cursed object in Yuuji's possession before that could add to his grief. He shudders at the thought of what might have befallen him had Satoru not got to him first.
Originally he'd planned to palm that mission off onto Megumi, if he had he may never have met Yuuji. Luckily for Satoru he was heavily motivated by his rampant sweet tooth and the promise of some of the best kikufuku in the country had been too good to pass up. He'd take great joy in throwing the fact that his sweet tooth could be very useful in Nanami’s face when he finally introduced Yuuji as his mate.
After that first fateful meeting Satoru had visited Yuuji in Sendai almost every weekend. It had taken him a little while to coax Yuuji into letting him court him. At first the young omega had been wary, his grandfather had clearly taught him well. Satoru had had to win his trust, prove that he was serious, that he'd stick around.
Yuuji had very much been under the impression that Satoru would get bored of travelling out to see him after a while. For the first month he'd act genuinely surprised when Satoru would turn up at his door. Eventually though Yuuji accepted that Satoru was sincere, that he truly did want to court him. The young omega dropped his guard and Satoru has enjoyed these last few months spoiling him with dates, dinners, gifts and souvenirs from his overseas missions.
Though he's been refusing as many long term and overseas missions as he can get away with. He doesn't like leaving Yuuji alone and unguarded in Sendai, even though Yuuji is strong he was still alone and vulnerable to those with sinister intentions. His grandfather had at least left Yuuji the house and a small inheritance. Satoru had tried to get Yuuji to let him help out financially but his proud and fierce omega flat out refused. Yuuji was independent, he was used to living alone and fending for himself.
Before he'd met Satoru he'd planned to take a year out of education and save up some money from his job at his neighbourhood convenience store before applying for college. He still planned to go to college but Satoru had finally, finally convinced Yuuji to let him claim him as his mate.
Meaning that after his heat was over and Satoru had claimed him, Yuuji would be relocating to Tokyo. Though he still wouldn't allow Satoru to foot the bill for college, he was insistent that he'd use the money from the sale of his Grandpa’s house to pay for his tuition.
It was ok. Slowly Yuuji was learning to accept Satoru's alpha’s need to provide for him. Yuuji was more comfortable with giving than taking but they had a lifetime together ahead of them, Satoru would teach him how to be a little more selfish. Just like Yuuji had taught Satoru that he could love wholeheartedly, that he could trust in that love and let somebody close enough to see all his broken pieces and know that they'd stay.
Yuuji won't leave Satoru, he won't abandon him to this cold cruel world. Yuuji is the sun at the centre of his solar system and Satoru can't help but to be caught forever in his orbit. It's dangerous the power his omega has over him but unlike his clan or the council Yuuji would never use it against him. Right now Yuuji knows nothing about the Jujutsu world. Satoru had concocted some bs about Sukuna's finger being evidence in order to get Yuuji to hand it over. So naturally Yuuji assumed Satoru worked in law enforcement and Satoru hadn't corrected that assumption.
The guilt gnaws at his gut but he can't really tell Yuuji the truth until they're mated. He can't risk exposing Yuuji to the world of curses until he can fully protect him from it. He just prays Yuuji understands why he needed to keep this part of himself hidden from him. The last thing he ever wants to do is hurt his omega, he doesn't want to see those golden eyes filled with accusation and betrayal. He only ever wants Yuuji to look at him in that way only he does, like Satoru hung the stars in the sky each night.
It's the other reason Satoru is so hopelessly in love, Yuuji embraces Satoru's awful personality. He doesn't care that he's dramatic and goofy, he laughs at his bad jokes and hangs on his every word when he tells him funny anecdotes about his kohai. Nobody has ever liked Satoru for who he is before and that level of devotion is intoxicating. Satoru is hooked on it and he doesn't think it's an addiction he’ll ever be able to quit.
Ijichi's been babbling this whole time most likely protesting Satoru's palming his reports off onto the assistant again. But this time at least he's actually cleared his absence with Yaga and although he may or may not offload missions onto his students Satoru rarely takes official leave. He was mildly surprised that Yaga hadn't questioned him on it, but Satoru wasn't going to look a gift horse in the mouth.
There had been a lot of crazy shit going on in his world recently. Enough that it had taken a toll on everybody at the school. The constant appearance of special grade curses, not to mention Sukuna's fingers being stolen from Tengen’s vaults along with several other cursed objects after a curse and curse users had invaded the exchange event had everybody on edge. Something big was on the horizon. He could feel it, just like he had before his now deceased best friend had unleashed hell on Kyoto and Shinjuku almost a year ago.
He's sure they could all use a break so maybe it's not so surprising that Yaga had yielded so quickly. Or maybe his mentor was just happy to be getting a break from Satoru.
“Sorry Ijichi but as of right now I'm out of here, you'll have to take it up with Yaga” he almost sings before leaving a flustered Ijichi in his wake.
He warps to a secluded spot right by Yuuji's house, he could easily just warp himself inside but since Yuuji doesn't know about Satoru's extra abilities he refrains. Instead choosing to be courteous and knock like a regular mundane human being. It takes a moment for Yuuji to answer but Satoru can already smell the delectable scent of his heat. The usually delicate honey that undercuts the sharp citrus is stronger, almost cloying in its sugary sweetness.
It calls out to his alpha, wrapping itself around his senses, an invitation aimed only at him. When Yuuji finally slides the door open he looks absolutely wrecked but in the most adorable way. He's wrapped himself up in a blanket, no doubt one from his nest since the scent is a combination of his own and Satoru's spicier sandalwood and musk. He'd donated Yuuji a few scent marked items for his nest, relishing the thought that his omega wanted his scent close.
His skin is flushed red, his usual fluffy hair is plastered to his face by sweat and he's pouting sullenly. Cute. The moment Satoru steps inside his feisty little omega throws himself at him, letting the blanket fall to the floor. It's only then that Satoru realises Yuuji had been completely naked underneath, in a dizzying rush all of his blood travels south, his dick that had already been half hard when he'd knocked is now at full mast.
Yuuji's lips crash into Satoru's so hard it makes his teeth rattle, his little omega is desperate for him. His usual shyness thrown to the wind, until now they haven't gone further than make out sessions and heavy petting. It was clear that Yuuji was inexperienced the first time they’d kissed, virginal as it turned out. A fact that pleased the beast lurking within Satoru greatly. Not that it would have mattered to Satoru, he'd just have made sure to erase all those who came before from his omegas mind.
As it is though Satoru gets to keep Yuuji's firsts all to himself. He was more than delighted when Yuuji nervously asked him to be here for his heat and his alpha had chirped with pride. Satoru's only condition had been that Yuuji take his bite because there was no way that Satoru could leave him unclaimed once he finally got Yuuji on his knot. His alpha was far too possessive for any other outcome and as much as he wanted Yuuji he would never take him unwillingly.
“Eager aren't we?” Satoru can't help but tease.
“Hurts, alpha, it hurts” Yuuji pouts again before murmuring an almost silent “Need you” against his lips.
He can't help but dive back in for another kiss, his tongue flicking against the seam of Yuuji's lips. His omega opens for him on a needy gasp and he slides his tongue past to curl around Yuuji's. The kiss is hot and messy, each silken slide of their tongues stoking the fire in Satoru's veins. His clothes are too hot against his skin, he needs them off now.
When he pulls away Yuuji whines needily until he realises what Satoru's doing. While he pulls off his jacket and peels off his undershirt, Yuuji's hands find Satoru's belt, unhooking it and impatiently pulling it free of his pants. He pops the button of Satoru's fly before pulling down his zipper and pushing the offending article of clothing down along with Satoru's boxers. Satoru kicks them off along with his shoes and he's about to close the distance between them when he realises Yuuji's gaze is transfixed.
Satoru's cock stands proudly, full and heavy and already leaking. His little omega can't take his eyes off it, his cheeks are flushed a deep crimson. Yuuji’s eyes are wide with a mixture of awe and nervousness, his hands twitching like he wants to reach out and touch it.
“You alright there Yuuji?” he asks knowingly.
“How…how are you so big? That's not gonna fit” he stammers.
“Trust me Yuuji” he reassures, hands gently cradling Yuuji's face “It'll fit”
He chuckles when Yuuji lets out a huff of disbelief before pulling the omega back in for another kiss. His hands stroke down the sides of Yuuji's neck, over muscled shoulders and down his back until they find his waist.
Then without breaking the kiss he gets two handfuls of that peachy ass squeezing and kneading it before hefting Yuuji up. Ever the fast learner Yuuji clings to Satoru's shoulders, wrapping strong thighs around his waist. Their bodies pressed flush from groin to mouth Satoru walks through the small house, carrying his omega to the nest in his bedroom.
Slowly he lowers Yuuji to the floor, letting his omega take charge for now. After all this is Yuuji's nest and Satoru has been in it before but never during a heat. It's an important part of etiquette for an alpha to wait to be invited into this sacred space.
Reluctantly Yuuji breaks their kiss, Satoru watches with rapt attention as Yuuji bares his throat to him before lifting himself up into his nest. He crawls on all fours to the centre before lowering his chest to the mattress and pillowing his head on his folded arms.
Ass in the air and on full display, his back a graceful arch. Slick coats his thighs and his scent is a sinful invitation.
Finally Yuuji's omega is presenting to Satoru's alpha, entrusting him to love and cherish and protect. It's more than he can stand, before he knows it he's kneeling behind Yuuji. His hands finding Yuuji's ass and parting his cheeks to reveal his hole. His slick has that same honeyed scent as Yuuji's natural scent and it has Satoru's mouth watering. Keeping Yuuji's cheeks spread he licks a broad stroke from taint to rim earning him a startled moan from Yuuji.
His perfect, innocent omega clearly wasn't expecting this but Satoru's wanted to taste Yuuji's slick ever since he first caught the scent of it, so he does. Circling Yuuji's slick soaked rim whilst alternating between kitten like flicks of his tongue and hot wet drags that make Yuuji cry out. As soon as the tight furl of muscle begins to relax he's pushing his tongue past, tasting Yuuji's slick straight from the source. His tongue spears Yuuji open at the rim, dragging out along hot clenching walls before pushing back in, repeatedly until Yuuji's rocking his hips back into it, begging for more.
He could eat Yuuji out like this all day and never grow tired but they’ll have plenty of time for that once Yuuji's heat subsides and Satoru's claim is staked. With one last tender kiss to his quivering hole Satoru pulls away, replacing his tongue with his fingers. Yuuji is so wet with slick and Satoru's spit that he can already take two fingers to the knuckle.
“You take my fingers so well Yuuji” Satoru praises delighted by the shudder that works its way down Yuuji's spine, his hole clamping down on Satoru's fingers. He files that reaction away to examine later, clearly his little omega likes praise. Slowly and carefully he works Yuuji open, thrusting his fingers in deep, stretching out that tight rim with scissoring motions. It's not long before Yuuji can take three of Satoru's thick fingers inside of him, desperately throwing his hips back fucking himself open on Satoru's fingers.
On the next deep thrust in Satoru curls his fingers upwards searching for that sensitive bundle of nerves, he knows when he's hit his target by the mewl Yuuji let's out as his hole clenches like a vice around the fingers buried deep inside it.
“Please” Yuuji begs.
“What do you need Yuuji?” He asks his voice thick with lust. He knows full well what Yuuji needs, what he craves but he wants to hear him say it.
“Need you alpha, need your knot” he whines.
And how can Satoru deny him when he begs so sweetly. He takes his aching cock in hand giving himself a few quick strokes, digging his thumb into the slit before spreading the precome beading there back down along his shaft. He guides his cock to Yuuji's twitching hole, rubbing the blunt head of his cock over it teasingly before finally pushing forward into that tight wet heat.
Despite Yuuji’s earlier fears he takes Satoru's cock like a dream, doing his best to relax himself so Satoru can sink even deeper. He takes it slowly, watching in awe as Yuuji's virgin hole stretches around him. His scent rushes in to soothe his omega whenever the sensation of Satoru burying himself within the deepest part of him gets too much. His body releasing yet more slick to ease Satoru's way. After what feels like an eternity he finally bottoms out with a guttural moan.
Holding deathly still, he fights against his instinct to fuck into his omega hard and fast. It's harder than he'd thought to resist the urge to fuck, knot and claim but he does. He wants Yuuji to only have fond memories of their first time together.
“You good?” He asks Yuuji who's starting to grow restless on his cock.
“Mmm hmm, you can move…please” he begs.
“God you're perfect, so strong, so good for me” he can't help the praise that slips past his lips. His hands that had been stroking along Yuuji's flanks find his hips and then he's pulling out until just the tip of his cock remains inside before pushing back in, his hips meet Yuuji's ass with a slap. Each deep thrust of his cock inside Yuuji has him crying out. His walls clinging onto Satoru's dick like he never wants him to leave.
Soon the room is full of the lewd sounds of skin slapping against skin as Satoru begins to fuck into his omega properly. Each thrust bringing Yuuji closer and closer to orgasm but Satoru wants to see it, wants to watch Yuuji's face with the full force of the six eye as he falls apart on Satoru's dick. So he changes their position, hiking Yuuji upwards until his back hits Satoru's chest and his head rests on Satoru's shoulder.
One of Satoru's arms bands tightly around Yuuji's chest holding him firmly in place as Satoru fucks into him hard and fast nailing his prostate with each punishing thrust. His other hand fists in Yuuji's hair, positioning him so he can claim his mouth in a wet, sloppy kiss. He nips Yuuji's bottom lip before pulling it into his mouth and sucking on it, earning him another full body shudder from Yuuji.
When Yuuji pulls free Satoru can tell he's close by the way his thighs tremble and his ass clamps down on his dick “Satoru mgonna cum” Yuuji's beautiful like this fucked out and vulnerable, tears shining in those honey gold eyes.
He wraps his hand around Yuuji's cock, stroking him in time with his thrusts. He keeps his other hand fisted in Yuuji's hair, angles his head so he's looking into Satoru's eyes, panting against his mouth.
“Don't take your eyes off me” Satoru growls before increasing the speed of his hand on Yuuji's cock. Yuuji comes just like that looking deep into Satoru's eyes as his mouth falls open on a silent scream, his cock twitching his release over the backs of Satoru's knuckles.
He releases Yuuji's cock but keeps his hold on Yuuji's neck, making sure he's still watching as he sucks Yuuji's cum off his fingers. Yuuji moans in response, pupils expanding with lust and then Satoru's kissing him again plunging his tongue into Yuuji's mouth making sure his omega can taste himself on Satoru's tongue. He likes it, his slick walls clamp down on Satoru's cock, muscles trying to coax a tye.
He won't need to wait long, but this isn't the best position for that. So Satoru reluctantly pulls out much to his omegas distress.
“I know baby, I'm going to give you what you need. Don't worry, I've got you” he reassures as he manhandles Yuuji onto his back before he's pushing back into Yuuji's hole burying himself to the hilt. He links their fingers before placing their joined hands on either side of Yuuji's head.
And then he fucks into him hard and fast, burying himself balls deep with each fuck in. He can feel his knot start to swell, copious amounts of slick helping to ease the way as it catches on Yuuji's rim making the omega cry out from the mixture of pain and pleasure.
“I can't” Yuuji sobs.
“You can, I know you can Yuuji” he coaxes as his knot pulls free of Yuuji's rim before he's pushing it back in.
“It's so big” he whines.
“I know” he soothes “but you can take it I know you can, my perfect omega. Going to look so good on my knot, gonna fill you up with my cum” he groans.
He rests his forehead against Yuuji's, nuzzles their noses together while pressing gentle kisses to Yuuji's lips. Yuuji melts against him, basking in the tender gesture so at odds with the desperate thrusts driving Satoru's knot deep into his body. Until finally his knot locks into place and then they’re both coming, Yuuji's walls clamping down as he shoots his seed over their stomachs, his inner muscles milking Satoru's cock as it spills his cum deep inside Yuuji's ass. His knot keeping it exactly where it belongs, inside his omega.
His alpha roars to the forefront as he pulls his mouth away from Yuuji's lips to nose along the delicate skin of his neck until he reaches his scent gland. The smell of honey drenched citrus making Satoru's mouth water, the dagger-like tips of his alpha fangs press into the swollen gland.
“Yuuji I…” they'd already agreed to this but somewhere in the back of his mind the part of Satoru that's more man than beast needs to know this is ok.
“Do it…bite me, I…I want to be yours” Yuuji pleads his hands threading through the damp strands of Satoru's hair holding him close.
He doesn't need telling twice, he sinks his teeth into the most vulnerable part of Yuuji, binding the two of them together as mates for the rest of their lives. His balls tighten as he releases even more cum into Yuuji as his claim takes hold. Gently he licks over the bite mark soothing the sting, it had to have hurt but Yuuji just holds him closer, a soothing purr rumbling out from the omegas chest.
As Satoru starts to come back to himself he turns them carefully so they're laid on their sides facing each other. This is heaven, it's as close to paradise as Satoru's likely to get and he never wants to leave.
“Hey You” he croons as Yuuji starts to come back to him. It's only temporary, a brief lull before his heat pulls him under again.
“Hey” Yuuji smiles back at him, contentment settling across his face.
Satoru reaches out to stroke over Yuuji's cheek with his thumb. He couldn't wipe the satisfied smile off of his own face if he wanted to. He's so perfectly happy, Yuuji is now officially his.
“You were perfect” he murmurs before pressing a chaste kiss to Yuuji's forehead “Can't wait to take you back to Tokyo with me” he wraps his arms around Yuuji's back holding him close to his body.
“Yeah” Yuuji sighs “I'll be sad to leave Sendai but I really want to be with you” he sighs sleepily.
“Awww Yuuji's so sweet,” he teases.
Yuuji just answers him with a yawn and an indulgent smile.
“It's ok Yuuji sleep” he soothes, holding him close, placing a kiss to the top of his head “From now on we’ll always be together, I promise I'll take care of you” his alpha rumbles agreeing with that declaration. He doesn't know it yet but Yuuji has the strongest Jujutsu sorcerer in the world wrapped around his finger. A claim no one else could ever dare to make…
Yuuji's heat ends the day before Halloween. They’d planned to spend Halloween attending a special night market in Sendai. Yuuji had never been to Tokyo before so Shibuya would probably be too much for him. Tomorrow they'd return to Tokyo so it made sense for them to say a final farewell to Sendai.
Only Satoru gets a call, one he can't ignore annoyingly. He'd known something big was on the horizon and from Yaga’s frantic tone he got the sinking feeling this is it. Humans have been trapped inside a veil in Shibuya and disturbingly they're asking for him by name.
“I'm sorry Yuuji but this is…I can't blow this off” he sighs.
“It's ok, I understand your job is important. If people are counting on you, you should go. Besides you've been here for almost a week” he can tell Yuuji's a little disappointed but his perfect omega is always thinking of others. He's right, Satoru is the strongest, he's needed by his kohai and his students.
“Ok, then I'll be back tomorrow to get you” he smiles before pulling Yuuji in for a goodbye kiss. He hugs him tightly burying his head between Yuuji's neck and shoulder inhaling their combined scent before pulling away.
Leaving Yuuji still sucks but at least he's now officially Satoru's omega. He isn't as vulnerable as he was before and tomorrow he’ll bring him home.
On October 31st Gojou Satoru is sealed within the prison realm.