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Three-dog Night

Summary:

Alpha Shota Aizawa and Omega Hizashi Yamada have been happily mated for years, the living example of a typical mating bond.

But then Shota gets a new coworker- one tall, silver-haired junior Alpha whose pheromones smell just as sweetly as his mate's.

Notes:

(See the end of the work for notes.)

Work Text:

 Shota knew Shirakumo Oboro meant trouble the second he walked into the office.

Not because the big, silver-haired guy was overly extroverted and goofy despite being the new Marketing department manager, nor the fact that he was also an Alpha, but because his scent was... peculiar. It was most definitely the strong, prideful musk of an Alpha, but it had just enough of a hint of sweetness and spiciness that clouded Shota's head— something that couldn't mean anything good.

The first (and last) time he'd smelled something like that was when he met Hizashi. Shota had almost marked him on the spot— the scent was so intense and overwhelming he had almost jumped the blond at the bar they were at. But Shota had at least enough common sense left to pop a suppressor and ask Hizashi out for a date—not that they ever got to it. 

Midway through the way to the restaurant, Hizashi went into heat and...well. 

What was meant to be a night of a tasty meal at a fine restaurant ended up being a night of a tasty meal at a love hotel because his poor Hizashi was leaking and panting and rubbing himself so much against Shota that he couldn't bear it— once he got his permission, he let the instincts guide them through it.

Shota wished he'd had thought things through a little more instead of letting his pheromones and his knot take the lead. He would've at least run a bath for them, complete with scented oils and salts, instead of going straight to mauling his partner.

But things had turned out like this and Hizashi was just as desperate as him, so who was he to question fate? Especially when Shota had Hizashi underneath him, naked and flushed and aphonic, begging him like his life depended on having his knot inside of him.

And when he panted, lifting his gorgeous blond hair to bare his freckled nape to him, Shota knew he was a goner for a second time, right after Hizashi grinned at him for the first time.

"Mark me, make me yours."

"That's a dangerous thing to say to an Alpha."

Hizashi tried to smile as he continued to touch his wet hole, trying to relieve himself. "Is it?"

"Mhm," Shota suddenly fisted his hand on his partner's blond hair, reveling in the satisfied cry he let out. "Especially to me."

"Sho," Hizashi whined, probably in pain. "Please."

So Shota gave in and thrusted to the hilt inside of him.

 Dinner didn't matter. The date didn't matter. His job the next morning didn't matter. All that mattered was making Hizashi his, getting to listen to that sweet cracking voice of his asking to be fucked harder and faster, getting him so covered in his scent no other Alpha, Beta or Omega would even dare approach him, and above everything else, giving Hizashi the sweet release he needed. 

"Who do you belong to?"

Hizashi trembled. "You."

Shota suddenly halted his pace, making Hizashi cry out in outrage. "Who do you belong to, Hizashi?"

"You, Shota! Please."

Hm, maybe Shota had a thing for tears, because he was getting more and more excited seeing those big green eyes all wet and glassy.

"Good boy," Without missing a beat, Shota continued slapping his hips nice and rough until his Hizashi was crying out the first of his many orgasms. Then he pressed his lips to his ears and muttered, "You're mine, and no one else's."

And after the deep, messy kiss Hizashi tried to give him over his shoulder, Shota held onto his neck and marked him as his as he came deep inside of him.

 

 —

 

Thanks to one Shirakumo Oboro, things weren't quite the same anymore. Shota could no longer ignore his presence—he couldn't pretend he hadn't seen him because he most definitely could smell him, and if Shota could smell him, Oboro could do the same.

And the second Oboro caught a waft of Shota, he was on him like a six feet tall labrador puppy, following him around the office during the breaks and wagging his tail each time he ran into him in the kitchen or the restroom. And Shota would play dumb and wave his junior away, but the second Oboro grazed his big paw against his hand on their way to a meeting, oh, Shota knew.

Oboro was definitely his mate.

It wasn't unheard of, but it was uncommon enough to make Shota question his own senses— maybe Hizashi's scent had rubbed off on his own clothes, or he was so pent up after working late shifts that any scent seemed almost as good as his Hizashi.

But the skin chemistry didn't lie, and that barely-there, butterfly kiss of a touch had sparked a chain reaction Shota could no longer ignore, and neither could Hizashi. If Hizashi hadn't sensed Oboro's scent already, he most definitely could now that he had touched Shota.

And he was right. When Shota kissed him on the lips after he got home from work, Hizashi's pupils widened so much he could see himself reflected on them. 

"You smell... different, Sho."

There was only one way to know for sure.

"Bad different," Shota cornered Hizashi against the kitchen counter, his heart nearly thumping out of his chest. "or good different?"

"Amazing different," Hizashi's voice was merely a whisper. "It's like your scent but it's... it feels..."

"Like the scent of your mate."

Shota could see the myriad of emotions on Hizashi's face: surprise, confusion, lust, disbelief.

 "Zashi," He held him gently in his arms. Shyly, Hizashi smelled him and rubbed himself against him just like their cat whenever they got home. "I think we have another mate."

A minute or two passed in complete silence, which was an unusual thing for Hizashi unless he was unwell, so Shota tried to take a step back and look at him. But right when he was about to disentangle himself from the embrace, the sweet smell of Hizashi's pheromones enveloped Shota at the same time he felt the shy poke of his mate's cock.

Hizashi buried his face further into the crook of Shota's neck. "Sho..."

He couldn't really recall what happened next—all Shota could remember was that from one second to the next, clothes were torn and scattered across the floor, and he had Hizashi up on the kitchen table, not once taking his mouth off of his'.

The last time they'd been this excited was probably the night they mated, yet now there was one extra scent that made everything twice as hot and intense for both of them. 

Shota was even panting. "Present."

Hizashi gladly complied and showed him how wet he was for him and for Oboro. To his surprise, Shota felt no angry possessiveness, only lust at the thought of Oboro joining them to play. He could even picture him leaving his marks on both, as well as barely fitting into Hizashi's nests or their bathtub, and raiding the kitchen after midnight.

Fuck.

"You want him too, don't you?"

Damn Hizashi and his power to read his mind when Shota couldn't even make sense of his own thoughts."Yes."

"Me too," His slender fingers slid inside his hole, showing Shota just how much he wanted them both. "Show me how much you want him, Sho."

Shota growled. "You better call in sick to your yoga class tomorrow."

"I will," Hizashi giggled, then cried out when Shota thrusted inside of him. "Now show me."

 

 —

 

This had to be Shota's third coffee of the day, and he was far from feeling less tired.

The previous night had been the best sex they'd ever had in their nearly ten years together, and Shota didn't want to admit it was because of a certain someone's scent all over him. Now there was no doubt the boy was their mate—it was just a matter of time until either Shota or Oboro took the plunge and made the first move.

Judging by the strong musky scent that enveloped Shota in the break room, it was going to be Oboro.

Oboro's blue eyes glinted that dangerous Alpha glint as he smiled at Shota. "Hello."

"Morning," The sudden click of the door lock startled Shota. "What are you doing?"

Oboro held up his hands, but still leaned against the only escape route Shota had. "I won't do anything. I just wanted us to be on our own."

Being alone with your mate(s) in an enclosed space? Did this boy ever get Sex ED?

"What's the matter with you?" Shota growled. Behavior like this one also wasn't tolerated at the company, especially from someone as new as Oboro—he could get fired on the spot if they were found. "We're working, this is—"

"Shota," The raw, vulnerable sound of Oboro's voice made Shota tremble. "You've been ignoring me and driving me insane for weeks. At least spare me a few minutes."

Grumbling, Shota tried to calm down as he turned back to continue preparing his coffee— or attempting so, because the blatant gaze of the other Alpha was getting... intense, to say the least.

"Tsk, ogling your senior in the break room. Have you taken a suppressor?"

Oboro nodded frantically. "I've been popping one every morning ever since I met you."

Jesus.

"I have a mate, you know?" The boy blushed as he looked at his feet. Even if he didn't know, he could probably smell they'd been going at it like rabbits. 

"I know."

"And I'm an Alpha like you, an old one at that. What could I possibly have for you to like?"

"You pull me like a magnet, Shota. I can't—"

Shota stopped him short, not even looking when Oboro shortened the distance between them."Hizashi and I are a set. If you want me, you're going to have to want him too."

"I do. I can smell Hizashi on you every day," To Shota's surprise, Oboro's smile was shy, like a schoolboy confessing to his crush despite the feral look he had in his blue eyes. "I was so scared, thinking it was going to repel me or something, but their scent is fantastic, just like yours—I can only imagine they're as gorgeous as you are, Sho."

Shota would've never guessed someone other than Hizashi (and a junior, at that) could make him swoon with his words, yet here he was.

"I know it's difficult to digest, and I know I'm your coworker and I don't wanna impose on your marriage with Hizashi...I just want to be with my mates."

Well, fuck.

Shota clenched his jaw and fisted his hand on Oboro's shirt, pulling him inches from his face. "Wait for me in the parking lot as soon as you clock out. You're coming home with me." 

 

 —

 

Shota had gone over all the possible negative outcomes of this situation over and over again before they even made it to his house. 

Despite Shota's reluctance, Hizashi had agreed to have Oboro over for dinner in order to meet and see how things went for the three of them and he was even excited about it, and both Oboro and Shota had taken suppressants before leaving the office so he had no real reason to be anxious. Except, maybe, for one thing: what if things actually worked out for them?

Contrary to Shota's pessimistic scenarios, that last one seemed to be the case: Oboro and Hizashi got along wonderfully (which wasn't that surprising, given how they were both so extroverted and all-around lovely) and Shota was content with just watching them interact: talking about trivial things like the movies and music they liked, joking and even doing some light flirting. And with each passing minute, as their touches became less shy and their pheromones more prominent, Shota was sure things were going to be better than okay for them.

Hizashi's wandering hand on his knee suddenly snapped Shota out of his thoughts.

 "Are you okay?" He whispered, as if trying to keep it between the two of them. "You've been quiet for a while now."

"Yeah," How could he not be when he had his two mates with him? Shota noted how both Hizashi and Oboro relaxed at his reply. "I just like watching you two talk."

A waft of Hizashi's sweet scent made the Alphas grunt. "We can do more than just talk. Would you watch that too?"

"No," Leaning in, Shota leisurely kissed Hizashi, not missing how Oboro's breath caught in his throat. "I would rather participate too."

"Hehe, I'm glad~" His mate then turned towards Oboro and beckoned him closer. "Come here, baby."

Exactly like a puppy, Oboro crawled towards them on all fours looking so horny and excited it would've been comical had they not been equally as horny and excited. When he was close enough, Hizashi laid his free hand on the boy's knee, just like he was doing with Shota. "Kiss him."

Fuck.

Hearing Hizashi command one of his Alpha mates was so surprisingly hot neither of them had any time to feel nervous about it, so Oboro complied right away— he gently held Shota's chin before swooping in and kissing him fully on the lips.

While Hizashi's kisses were always needy, Oboro's were downright desperate. Not for the same reason as the Omega, but because he seemed inexperienced— just like it happened whenever Hizashi kissed him, Shota felt the warm, tingly feeling of his instincts kicking.

The poor boy was surprised when Shota grabbed him by the hair and deepened their kiss, though he soon was able to match his pace. He didn't know if kissing an Alpha always felt this good, but god, when Oboro got the gist of it Shota started to get antsy.

And Hizashi too, judging by how his hands were fumbled with their belts.

"Good," The Omega panted, immediately getting the Alphas' attention with the sudden wave of his pheromones. "Now do it to me."

They didn't need to be told twice.

Hizashi fell back with the force of the two Alphas suddenly on him— they shared one sloppy, messy three-way kiss that tasted as heavenly as it felt before they took turns to ravish their Omega: Shota eased Hizashi out of his clothes, while Oboro licked & kissed every inch of skin revealed. Admittedly, they made a great team driving Hizashi insane.

"Stop teasing me," The poor blond whined, one hand on each of them trying to pull their clothes off. "Fuck me already."

Although Shota was tempted, he didn't give in. Instead, he grabbed Oboro and pulled him face to face to Hizashi's wet cock and entrance. "Service your Omega."

What Oboro lacked in experience, he more than compensated with enthusiasm— one little command and the boy was already eating Hizashi out like it was his last meal, pinning his hips down each time the Omega bucked, making his pale freckled skin turn flushed just like Shota loved.

"Good boy," Shota praised as he pinched Hizashi's nipples & swallowed his cries in a deep kiss. "Make him cum, Oboro."

Happily, the boy complied: his big hand grabbed Hizashi's little cock in comparison and touched him hard and fast as he lapped his hole out, the sensation so intense their Omega wailed in pleasure. He was even naughty enough to cum on Oboro's face,  and Shota couldn't have that nice scent go to waste.

"C'mere."

Oboro widened his eyes comically when he noticed what he wanted to do but immediately relaxed the second Shota licked up the cum from his cheek, and whether it was from the depravity of the situation, or the intoxicating mix of their scents, or just plain young horniness, he leaned in and kissed Shota fully on the mouth. 

Ugh, this puppy was making it hard for Shota to hold back. Yet before he could grunt the next command, Hizashi sighed in delight.

"Service Shota too, Oboro." Hizashi gently eased Shota back until he was laying on his lap, then he coaxed Oboro just like Shota had done. "He's been very good to us, hasn't he? He deserves it."

"Wait—"

"He has," The hungry glint in Oboro's eyes suddenly left him speechless.

"He's been the best, taking care of you for me." Shota didn't know when it'd happened, but he suddenly had two sets of hands roaming his body to the point of making him shiver. "Now I'll take care of you. Both of you."

And just as if he hadn't virtually professed his love for them, Oboro hauled Shota's legs up and buried his face between them. Ah, so this is what Hizashi felt whenever Shota mauled him.

Oboro didn't hold back with his ministrations— he handled him roughly because he knew Shota could take it, and was immediately spurred on when he hissed and panted in pleasure, especially when it also provoked Hizashi's whimpers.

A little too spurred on, Shota thought as he cried out when Oboro started rimming him, and then some— along with his tongue, the boy slipped his fingers into Shota's hole.

"Whoa! Wai— ah, fuck!"

For an inexperienced boy who was practically wagging his tail an hour prior, Oboro sure was knowledgeable about the right spots to hit, even on an Alpha. But what was more surprising was the fact that Shota saw stars the second Hizashi grabbed his cock and began jacking him off.

 "Hm, you're doing so well, baby," Hizashi purred. "Why don't you make Shota cum, so I can taste him too?"

And Oboro did— he hummed against his hole and held Shota down while he rode the wave of an explosive orgasm, and he even had the galls to take Hizashi's hand and smear cum on his lips so the Omega could kiss it off like they had done. If it was meant to provoke Shota, it sure worked.

"You're incorrigible," But then so was he— he grabbed Hizashi and put him where he belonged, sandwiched tightly between his two mates as he taunted, "You need to be put in your place, Omega."

A shudder went down Hizashi's back when Shota pressed him against his body and kissed him. His mate always turned to putty in his arms and this was no exception, except for the fact that they now had Oboro to make things dirtier (and funnier, more wholesome and happier, too).

 "Isn't he lovely?" Shota asked Oboro when he saw his eyes ogling his ass. To prove his point, Shota grabbed Hizashi's ass and showed Oboro how wet and hot he was for them. "He feels amazing when he's in heat."

A waft of Oboro's pheromones enveloped them as he tore his clothes off, as if taunting Hizashi to go into heat just so he could have a taste.

"Go on, he is yours too."

God, Shota could've sworn he saw something snap in Oboro's eyes. The boy suddenly seemed bigger, broader, straight-up dominating— so much so, it made Shota shiver with desire. How will it feel when he tames him next?

Fucking amazing, judging by the way Hizashi shuddered just by having Oboro's hands on him— his big paws nearly circled his waist as the Alpha dragged him towards his cock, now standing hot and heavy and so painfully wet Shota thought he was gonna cum as soon as he put it in.

But just like any other Alpha, Oboro wasn't going to embarrass himself in front of his mates. He took it to heart to pleasure Hizashi from the moment he rammed into him, briefly letting the blond get used to his size before wrapping his fist around his hair and making him his.

Hizashi's pretty pale skin was already flushed, his brows furrowed and his mouth open and panting just like Shota loved. Each passing second, each moan his mates let out, each slap of their skin together made it harder for Shota to keep his cool— and Oboro noticed it too, his feral blue eyes set on him.

"Hizashi," Oboro pulled on his blond hair, forcing him towards Shota's cock. "Suck Shota's cock for me, baby."

Fuck.

Hizashi had sucked him plenty of times, each as hot and exciting as the next, but having his Omega suck him while their Alpha watched —not once slowing his hard pace— was on a whole other level of electrifying.

Especially when Oboro grabbed his neck and pulled Shota in for a hungry kiss that shook him to his core. And it wasn't lost on Hizashi either, because he soon tensed and cried out as he came— which in turn made both Alphas cum an embarrassing half-second later.

For their first time together (and Oboro's all-time first), it had been pretty amazing. But the boy wasn't about to go to sleep just yet. Shota let out a gasp of surprise when Oboro grabbed his waist and pressed his already hard cock against his ass. 

"What are you doing?"

Even Hizashi shivered with the look Oboro gave Shota. "I want you too, Sho."

Thank god Shota had two hands because his two mates sure were a handful each. 

Hizashi, of course, was immediately on board. He slid his hands down Shota's shoulders, trying to ease his evident nervousness with neck kisses. "Try it, Sho. You'll get to feel what I feel each time you fuck me senseless."

Well, he had to admit that was a fair point— Shota had always wondered if being on the receiving end was as wonderful as Hizashi made it seem with his desperate scratches and an unbelievable amount of cum, or if it was just because he was an Omega. Either way, Shota was more than tempted to see what being bred by his Alpha really felt.

"W-we don't have to do it if it makes you uncomfortable," Some of the hunger in Oboro's eyes faded, and he was back to being a big-eyed silver puppy. "I'm more than happy to just lay down and cuddle you two and—"

"Not yet," God, was that sultry voice really Shota's? "You still have to make me yours, Alpha."

That seemed to be the right choice of words because the big bad dominating wolf appeared in the blink of an eye."I do, yes."

To their surprise, Oboro flipped Shota on his stomach and placed him directly on top of Hizashi, every inch of hot, sweaty, cum-stained skin pressed together.

"You must tell me if it's too much for you, okay?"

Both Shota and Hizashi shared a stunned look.

Before Shota could ask if he was trying to kill his elder mates, his breath was knocked out of him when Oboro buried his cock down to the hilt inside of him. Shota was bracing himself for pain —or, at the very least, some mild discomfort— but he was shocked to find the sting was only from the sharp pleasure he felt.

"Fuck," Oboro grunted in unison as Shota adjusted to the unfamiliar feeling of the Alpha inside of him. "You feel amazing, Sho." 

And then, without further ado, Oboro started fucking him hard and good.

Shota thought he'd gone mad for a moment— he was holding onto Hizashi for dear life as his whole body shuddered with Oboro's thrusts, each one of them hitting a spot Shota would've never thought he'd be feeling. He could hear himself moan each time, and he could also feel Hizashi moaning underneath him. Oboro could hear him too, as he roughly fisted Shota's hair and pulled him up, the sudden change in position making the brunette cry out.

"Open your eyes." Shota did as he was told, and was instantly greeted with the amazing picture of Hizashi, all flushed and wet and needy, touching himself as he watched his mates fuck. 

"We can't leave our Hizashi all by himself like that," Oboro breathed in his ear, and then the two hungry gazes were set on the blushing blond. "Fuck him too."

And how could he refuse? Just like before —but with an extra pair of helping hands—, Shota pulled Hizashi up and helped him onto his cock just like they'd done plenty of times before. But this time, Shota was completely overwhelmed.

He wasn't the one doing the fucking— both of his mates were fucking him. Oboro was relentless with his pace and so was Hizashi, holding onto him and riding his cock like his life depended on it, and it was just too heavenly, too overwhelming, too— too much.

Especially when he saw Oboro reach out and bite Hizashi's neck, Shota's own following immediately after— all three of them came on the spot, and now Shota was absolutely positive he'd died and gone to heaven. 

 

 —

 

Shota didn't die, but he was most certainly in Heaven.

He woke up in a tangle of limbs and strewn clothes, huddled tightly between a snoring Oboro and a purring Hizashi, completely spent— further proof that the previous night had been very much real, and that he now had two wonderful mates instead of one.

How on Earth did Shota get so lucky?

"Morning, sleepyhead," Hizashi purred, kissing his cheek without even opening his eyes. "Did you sleep well?"

As Shota returned the kiss, he briefly pondered on the question."Better than ever."

"What's better than ever?" Oboro groggily asked, and also kissed both of his mates as Hizashi tried not to giggle at his bedhead. "Good morning, you two."

"This."

The boy immediately understood the implication and tightened his arms around his mates. "It can be even better."

"Oh?"

"Mhm," Oboro continued. "We'll wake up like this every single day from now on."

Shota had to cover his blushing face as Hizashi let out a startled laugh. "Are you saying you'll move in with us?"

That adorable puppy dog look appeared on his face again as he replied, "If you let me, of course."

And how could they not?

Notes:

I'M BACK!!!

I broke the almost year-long hiatus I was in by posting this old Kinktober thread that I really enjoyed writing, so I figured I'd post it here in case twitter dies soon. Thank you all for reading and commenting on my fics after all this time, it means the world to me ❤ More fics are coming soon so stay tuned if you want to read them!