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Ruts had, for a very long time, been synonymous with mixed feelings to Suguru.
They’d been fine when he’d been younger, having just presented, and nobody really expected him to do much more than behave more aggressively or feel the need to outdo himself in PE classes or his after school martial arts lessons.
When he’d met Satoru in high school, both of them having freshly presented, their butting of heads was the perfect outlet for their heightened energy and onslaught of hormones and pheromones. They argued often, fought even more often, and they liked to challenge each other to see who was the fastest and who could last longer in the track team after class.
Then, of course, they’d grown a little older and their classmates had started being more suggestive.
“I’m hoping to spend my next rut with Moriyama,” one of their classmates — a fellow alpha — had said once, wagging his eyebrows suggestively. “Hoping she’ll let me spend her heat with her next time too.”
Another classmate, a beta, had snorted, “Moriyama? You’re delusional. She might let you spend your rut with her but everyone knows she always spends her heats with Nakashima.”
“Nakashima?!” their alpha classmate exclaimed, shocked. “But he’s an omega too!”
“Omega on omega is some freaky shit,” someone else had commented, and everyone in the group had laughed.
Suguru had been quiet throughout the entire exchange, and Satoru had been leaning back on his chair, sunglasses perched on his nose and clearly almost asleep.
“What about you two?” one of their classmates had finally asked. “Are you finally going to start knotting some omegas this year or are you going to keep working out through your ruts together?”
Satoru had only snorted, clearly having been more awake than Suguru had given him credit for. “Knot some omegas? Who cares about that?”
This had elicited another loud round of laughter between their peers, neither of them surprised by his statement. Satoru had never cared about any of that.
And Suguru, well, he hadn’t either. He knew he was supposed to, but he’d thought he still had a couple of years before he was expected to do something about it.
“And you Geto?” their classmate pressed, clearly curious. “Any omega in sight?”
Suguru didn’t know what to say, but Satoru spared him from figuring it out anyway.
“Leave him alone!” he’d exclaimed, straightening out in his chair. “ Tch , you guys are really annoying.”
And that had been that. Suguru had been grateful — as long as Satoru kept rejecting his own alpha instincts, then Suguru could keep hiding behind him, pretending there was nothing wrong with him.
As the years had gone by, he and Satoru kept working out around their ruts, letting off their excess energy like that, and when they’d started college Suguru had felt much more comfortable in his skin, having finally met more people — different people — who didn’t think second genders were quite so black and white.
His ruts before finally getting together with Satoru consisted of long workout sessions, long runs, and frustrating masturbation sessions.
Satoru’s, he knew, were much the same. Even if the Gojo clan often tried to set him up with an omega during his ruts — and once they’d even hired an omega and sent him over to their apartment, completely unannounced; Suguru had taken one sniff at the omega and growled so hard he’d run back to the Gojo estate with his tail between his legs (Satoru didn’t know, even years later) — he always, always rejected their offers, and so Suguru had often heard him moan loudly and unrestrainedly from his bedroom. He… hadn’t been very successful at ignoring him, sometimes even triggering his own rut.
His ruts after getting together with Satoru, well. They were infinitely more satisfying.
Satoru liked to stuff him nice and full on any given day, but ruts were something else.
During Satoru’s ruts, Suguru often tried to tap out. Satoru would work him unrelentlessly, filled with endless stamina, and Suguru would beg and beg and cry and “please, enough”, not quite knowing how he was supposed to come one more time and then have to do it all over again the next day, but Satoru wouldn’t let up.
Instead, Satoru would keep fucking him through it all, through his ovesensitivity and his tears and his soreness, and he would lean over and whisper “come on baby, give me just one more. For me. I know you can do it”, and Suguru would sob — “I can’t, Satoru, I really can’t” — but then he would come anyway, because his body was Satoru’s, he was wholly his, and he was asking him to come so he would.
Suguru’s ruts, on the other hand, were an entirely different thing.
From the moment Suguru’s sexuality had awakened, he’d always hated his ruts. Masturbating was frustrating because his preferences and his instincts very much did not line up, and he was always left feeling empty and unsatisfied.
With Satoru, however, he finally felt seen.
Satoru would stuff him full — with his fingers, his cock, his tongue, often even his toys, when his stamina finally gave out and he couldn’t keep up with Suguru’s rut-influenced energy — and whisper to him the entire time how he was so good, how he was made just for him, how he was his perfect little omega , and Suguru would be quickly tipped over the edge. And when his knot inflated and Suguru whined, Satoru would slowly, soothingly rub his knot until it finally deflated.
Their ruts had lined up fairly often back in high school and yet, ever since they’d started dating, it hadn’t happened even once. Secretly, Suguru was a little disappointed.
But then—
On a Tuesday like any other, when Suguru was idly checking his calendar to reorganize some of his meetings, he realized his rut would be hitting him soon.
Suguruuuu 🖤: going into rut in a few days
Suguruuuu 🖤: remember to book time off
Satoru 🥺: wait really??
Satoru 🥺: me too bby!!!
Satoru 🥺: i’m gonna wreck your hole 💕
Satoru 🥺: hey bby
Satoru 🥺: stop ignoring me!!!! + add lube to our grocery list
Satoru 🥺: 3 bottles
Suguru shivered in anticipation as he read that his rut and Satoru’s would finally sync up. Sex with Satoru was already amazing on an average day, but on a rut it was simply insane. What would it be like when they finally matched each other’s energy?
When he got home later that day, tired but oddly energized, already feeling the slow buildup of energy typical of the days leading to his rut, it was to find Satoru was just as, if not more, excited as he was.
“What is all this?” he asked, after having searched for Satoru in the kitchen and their bedroom and finally finding him in Satoru’s old bedroom, stacking up various blankets and clothing pieces, almost as if building a nest.
“I’m making us a nest,” Satoru said, looking incredibly proud of himself, “for our upcoming ruts.”
“But neither of us are omegas,” Suguru pointed out, though his heart was starting to beat rapidly in his chest. Satoru liked to call him his pretty little omega during sex but this– this was taking it a step further. He liked it a little too much.
To that, Satoru only cocked his head to the side, smiling mischievously. “Are you sure about that?”
Suguru flipped him off.
Over the course of the next few days, Satoru slowly added to their nest, and also impulse bought a mini fridge so he could store water, sodas, fruit and snacks. Stacks of clean towels also slowly moved from their linen closet in the hallway to the spare bedroom/makeshift nest, and Suguru only watched this all happen, unable to do anything.
“Don’t you think this is a little too much?” he’d asked, trying to convey exasperation, but knowing full well he was rather feeling the opposite.
“Nah, this one is a special one, babe,” Satoru said, lining up six (six!!) unopened bottles of lube on the nightstand.
“Just because our ruts are syncing up?”
Satoru laughed, giving him one of those looks – the ones where he looked at him from above the rim of his glasses – before saying, “That, and because I’m going to stuff you so full of cum this time you’re going to get pregnant.”
Suguru felt his cheeks heat up, and he knew he’d probably turned five different shades of red. Afterwards, he kicked Satoru.
☾
Their ruts officially started on a Thursday morning, a little over a week after they’d first noticed their upcoming ruts. Unfortunately, neither of them had been expecting them to arrive quite so soon, and they’d only booked time off from the next Monday onwards.
Suguru realized he was in rut when one of his clients breathed at him the wrong way over Zoom and he nearly broke the edge of his desk trying to restrain himself from punching his laptop (as if that would help); Satoru realized he was in rut when his favorite pastry was sold out and they gave him his sugary coffee order wrong during his morning break and he saw red.
Both of them were quick to hightail it back home. Satoru called Suguru, picked him up in his car, tried to grope him while he was driving only to get nearly punched in the face by Suguru, who was too pent up to be comfortable fooling around inside such a tight space during his rut, and they both tried to ignore the speeding ticket that Satoru would inevitably get in the coming days for how fast he drove to get them home.
When they finally got home, to Suguru’s surprise, Satoru didn’t immediately jump him. Instead, Satoru stared at him, unnervingly, even taking off his sunglasses and looking at him with those bright blue eyes of his (Suguru had once sent him the meme about people with blue eyes staring creepily at everyone; Satoru had laughed and laughed and then realized he could feign being offended instead to get more cuddles out of Suguru), always without making a move.
“Satoru?” he asked, cautiously.
From Satoru’s posture and the distance between them, he vaguely got the impression that Satoru was a bit like a lion stalking a defenseless gazelle, circling it and waiting for an opportunity to attack. They were both alphas and yet he felt like the prey.
“Suguru,” Satoru finally said, lowly, stalking towards him deliberately slowly, “are you ready?”
Suguru scoffed. “Of course I am,” he said, but he wasn’t sure he was. Satoru looked dangerous, and he was too on edge from the rut, too ready to fight.
Only one way to find out though.
☾
Suguru wasn’t ready.
He wasn’t one to admit defeat easily, least of all to Satoru – they were both far too competitive, especially with each other –, but this time… he was almost ready to call it.
He and Satoru had circled each other in their living room, slowly, each of them unwilling to back out, until at least finally Suguru saw an out and managed to flee to the spare bedroom, where Satoru proceeded to unceremoniously pick him up and throw him on the bed, right in the middle of their nest.
Suguru would like to say he remembered everything that happened after that, but he didn’t.
He could vaguely recall clothes being ripped rather than taken off, copious amounts of lube but minimal amounts of preparation, and when Satoru slid into his tight heat – far sooner than he would have in any other day – he had hissed in a mix of pain and pleasure from the burn.
“You’re so tight, baby,” Satoru had grunted out, not giving him any time to prepare before he was moving, thrusting hard into him.
They were both lost to the haze of their rut. The only thing that mattered was their own pleasure, chasing their high.
When Satoru came first, unable to help himself, he simply kept going, fucking into Suguru with even more vigor as his refractory period was practically non-existent during his rut.
“Do you wanna come, baby?” Satoru asked, draped over Suguru’s back as he held him up by his hair. “Do you want me to knot you?”
Suguru didn’t know what to say. He did and he didn’t; he wanted nothing but to keep feeling good, stuffed, pounded into, bitten, licked, scratched, he wanted nothing more than to keep feeling the pain in his scalp from how tightly Satoru was fisting his hair, but he also wanted to come, to feel Satoru’s knot swelling and pushing past his rim, to be so full of his cum that his belly would distend.
So he didn’t say anything and he let out a long moan instead, feeling his eyes roll back from the pleasure, and he only realized what he really needed and had been missing the entire time when Satoru fisted his cock, pumping him rapidly aided only by the slick of his pre-cum.
Suguru came with a loud yell, uncaring of their neighbors – fuck them honestly, like they’d never been in heat before and stunk up the hallway anyway –, and even though he was oversensitive Satoru didn’t let go of his cock, keeping it cased tightly in his large hand so he could relieve the pressure on his knot.
This had only been the first round, though.
During four painstakingly long days, Satoru manhandled Suguru any way he wanted to.
He fucked him on his back, his stomach, on all fours; on the bed, against the door, over the kitchen counter and in the shower; he ate him out after he came in him and called it his omega slick, he pressed down on his cum-full belly and told him he was sure if he came in him just one more time he was sure this time it would finally take and he would get pregnant; he licked Suguru’s tears off his face when he begged him to stop, please stop, really can’t take it anymore, and kept going until his voice was so hoarse he couldn’t talk anymore; afterwards he fucked his mouth and made sure he completely lost his voice.
He always took care of him afterwards, though; he made sure he drank water even when he was too fucked out to care about anything, handfed him pieces of precut fruit and tried his hardest not to jump him when Suguru licked the juices off his hands; he cleaned him thoroughly when Suguru was too tired to walk and stand in the shower, and he put on funny videos on Youtube during their rare moments of lucidity, wrapping Suguru in his arms and stroking his hair comfortingly.
At some point, when Satoru’s dick was too raw and Suguru’s hole was too puffy and swollen, they decided to go back to their high school days and fight it out instead, get a little reprieve. Satoru was out of practice; Suguru was not – he still went to the dojo twice a week.
In the end, they found fighting only turned them on even more, and Suguru ended up riding Satoru until he swore his dick would fall out if he made him orgasm again.
“Suguru, please,” Satoru begged – a first for him, really –, moaning in a mix of pain and pleasure as Suguru kept bouncing on his cock, keeping his hands supported behind his back on Satoru’s thighs. “Please, I can’t take it anymore. Baby you gotta have mercy on me.”
Suguru laughed, exhilarated at finally one upping Satoru for the first time since their rut started. “Mercy? What have you done to deserve mercy?”
Satoru groaned as Suguru slowed his movements, only to grind his ass into his dick, feeling it where his womb would be if he had one. “Don’t I fuck you good?” Satoru asked, with an edge of despair in his voice. “Haven’t I been taking such good care of you?”
Suguru slowed even further, pretending to think it over. “You’re a good alpha,” he conceded, and Satoru grinned with relief.
“Yeah? I am, baby, I am. And you’re such a good omega, so good for me – won’t you have mercy on your poor alpha?”
Suguru laughed again, picking up his pace once again. “You’re a good alpha,” he repeated, amused at how confused Satoru looked, though still a little hopeful, “but you could be better.”
For the first time since he’d met him, Suguru saw Satoru cry. It was made even sweeter by the fact that it was caused entirely by him.
☾
When their ruts finally ended, it was technically already Monday morning.
They were both lying on the bed – their disgusting, soaking wet bed –, surrounded by various blankets and random pieces of clothing, but neither of them had the energy to get up and move to their nice, clean bedroom.
Suguru wondered how many loads of laundry he’d have to do the next day. Satoru… was playing with his dick.
“Satoru?” Suguru asked, highly amused. “These four days weren’t enough?”
Satoru snorted, halting his movements. “Trust me, they were. I was just checking to see if my dick is still here; I could have sworn it was ready to fall off.”
Suguru snorted, before devolving into full out laughter, taking Satoru right alongside him. “I’m really glad our ruts don’t sync up more often,” he admitted. “I’m not sure I could take doing this so intensely all the time.”
“It’s nuts,” Satoru agreed. “But you liked it, right?” he asked, turning his head to look at him in the dark, the moonlight illuminating only one part of his face.
“So much,” he said, turning on his side to face him, and he wasn’t even lying. “I love you, Satoru.”
Satoru’s breath hitched. Suguru didn’t say it often, and he rarely ever said it first, but when he did– “I love you too,” he said, turning on his side too so he could inch closer to him and kiss him.
It was short and sweet and the complete opposite of every other kiss they’d exchanged over the past four days, but it was everything they needed right then.
“Am I a good alpha?” Satoru asked, laughing when Suguru pinched his waist.
But still, “The best,” Suguru said, kissing him again.