Thread by @n0tananimegirl

sakuatsu | Firsts | NSFW #NSFWSKTSWEEK2023 @sktsweek

When Kiyoomi agreed to be the best man for his old college roommate’s wedding he hadn’t expected to meet the most beautiful man he’s ever been graced to lay eyes on.

He wished Bokuto had at least given him a warning about /Akaashi’s/ best man then he would have at least been somewhat prepared when he was introduced to Miya Atsumu.

The only coherent thoughts in his head as he shook the stunning blond’s hand were:

/Holy Fuck/ and /I’m going to date the shit out of this man./

Luckily for him, Atsumu seemed just as interested judging by the flirtatious smiles thrown his way and the nickname ‘Omi’ given to him. They grew closer as the wedding day neared -

both doing their jobs as best man to make sure Bokuto and Akaashi were relaxed and ready for their big day. Evenings of planning bachelor parties and wedding showers resulted in non-official dinner dates and accidental sleepovers on Kiyoomi’s couch.

The tension between them grew thicker and thicker the more they spent time together. Kiyoomi wanted to do /something/ but for now, simply being near Atsumu was more than enough.

Yet he didn’t think that they’d share so many firsts on the day

that was supposed to be for Bokuto and Akaashi - though he couldn’t exactly complain about the incidents that led to it.

It starts off with Atsumu misplacing Akaashi’s ring before the ceremony. The blond finds him in a panic, speaking a hundred miles a minute

“I fucked up Omi -oh my god Keiji is gonna kill me!”

Kiyoomi does the only thing he knows how to do and takes Atsumu’s hand in his own, intertwining their fingers - the first time he’s ever done so - effectively shutting him up. Instead Atsumu freezes and stares at him wide eyed

“We’ll find it Atsumu - just tell me the last place you thought you had it.” Kiyoomi soothes, his thumb rubbing across Atsumu’s knuckles. He relaxes under Kiyoomi’s touch and lets out a deep breath.

They find the ring eventually -

it fell from its spot on Atsumu’s hotel room nightstand and wedged its way into a corner. Atsumu’s adorable blush when Kiyoomi found it was well worth getting on his hands and knees on a no doubt disgusting hotel carpet.

The next happens after the ceremony - after Bokuto and Akaashi said their vows, though if Kiyoomi was being honest, he hadn’t been paying much attention. Not when Atsumu was standing behind the groom looking absolutely breathtaking.

The photographer gathers the entire bridal party together getting several photos then of Bokuto and Akaashi alone, snapping shot after shot - capturing the love between the newlyweds when she finally turns to him and Atsumu “Can I get a picture of the best men?”

Kiyoomi glanced over at Bokuto who nodded encouragingly, his golden eyes flickering between Atsumu and himself “Go on Sakusa!” He winked while keeping an arm around his new husband.

He then looked at Atsumu who shrugged with a blush on his face

“If that’s what the grooms want. Get over here Omi.”

Sakusa chuckles lowly and steps next to Atsumu facing the camera wrapping an arm around the other man’s thin waist. His fingers tightened when he realized just how small it was. Atsumu leans in smiling brightly.

Unable to help himself, Kiyoomi keeps his eyes on Atsumu momentarily forgetting about the photographer and the snapping of the camera. Their first photo together - just the two of them.

“Lovely!” The photographer cheers “Let’s move on now.”

Kiyoomi and Atsumu remain in their spot, their gaze finally meeting. The blond let out a nervous laugh, cheeks turning pink “Better get going huh Omi?”

With one last squeeze of his waist, Kiyoomi released Atsumu “Yeah, lets go.”

Their next first took place after the Bokuto’s first dance when the rest of the guests were welcomed to join them on the dancefloor. Kiyoomi instantly searched for Atsumu in the crowd watching as he jokingly pushes Oikawa towards Iwaizumi - cearly meddling.

He felt an elbow to his side and let out a grunt turning his attention to Kuroo, a fellow groomsman who was giving him a pointed look “Why are you looking at me like that?” Sakusa grumbles.

“I see you eyeing Miya - go ask him to dance.” Kuroo coaxes with a cat like grin

“Unless you’re too chicken shit?”

Kiyoomi squinted at the other man knowing he was being played - he wasn’t an idiot but fuck. He didn’t want to give Kuroo the satisfaction.

“Fine.” He sighed but before he could go and march over to the blond, he felt a tap on his shoulder.

Turning around he saw none other than Atsumu standing behind up with that adorable nervous grin “Heya Omi. Um. Do ya wanna dance?” He asked tentatively.

Kiyoomi pushed Kuroo away and reached for Atsumu’s hand with a small smile “You beat me to it. I was just about to ask you”

Atsumu's nervousness faded and was replaced with cheekiness “What took ya so long then?” He laughed then drags Kiyoomi onto the dance floor.

His hand once again found the blond’s waist while the other held onto Atsumu’s, pulling him in.

Atsumu let out a gasp but placed his free hand on Kiyoomi’s shoulder, beginning to sway to the soft music.

“We did it.” Atsumu finally spoke after a moment of silence. “The wedding went off without a hitch besides the whole ring thing.” He winced in embarrassment.

Sakusa huffs a breath of laughter “I’d say so. I don’t think I’ve ever seen Bokuto look this happy and that’s saying something.”

Atsumu nods his head in agreement “Keiji too. He’s practically glowing. I've never seen someone so beautiful.”

Kiyoomi hums “I can’t say I agree with you. Akaashi’s best man was absolutely stunning today, nearly stealing the entire spotlight. I was distracted the entire ceremony.”

Atsumu bites his lip at that, trying to hide his smile “Really? Don’t let Bokuto hear ya say that,

he might actually throw hands at the person who doesn't think Keiji is perfect.” He teased before leaning in closer, nearly brushing their lips together “But, I can admit, I found myself distracted too. Bo-kun’s best man looks incredibly hot in his suit.”

Kiyoomi leaned in further “And how would you feel if he kissed you right now?”

Atsumu smiled, bright and beautiful. “I’d feel insulted if he didn’t.”

Sakusa wasted not another moment in closing the distance between them, kissing him deeply.

Atsumu sighed against his lips, responding immediately. Fuck, this was what he’s been waiting for since the moment he met Atsumu.

“You know,” Kiyoomi murmurs, breaking away only slightly “We’ve had a lot of firsts today.”

Atsumu giggles, pecking his lips

“We have. Think we can have a couple of more?” He leans back to raise a brow at Sakusa seductively.

Oh, the cheeky minx.

Kiyoomi smirks and tugs him along off the dance floor “I think the grooms can spare a few moments without us.”

Atsumu’s back hits the stall of the bathroom as Kiyoomi kisses him fiercely. Both men rapidly tug at each other’s belts to remove their pants. Atsumu pulls away from the kiss to pant out “We need to be quick, someone will come looking for us soon.”

Kiyoomi kisses his neck, nipping and biting while pushing down Atsumu’s dress pants followed by his own “I better work fast then.” He grins against his skin.

Whatever response Atsumu has dies on his tongue as Kiyoomi reaches down

and grasps his aching dick still confined in his boxers “Omi!” He cries out leaning forward to kiss Sakusa once again

With a low grunt Kiyoomi pushes down their boxers down, grinding their hips against one another, bare cocks touching “Fuck, baby.”

Atsumu tosses his head back in pleasure “Omi please. I need ya to touch me.”

“Yeah?” Kiyoomi cups his face bringing him in for a long deep kiss “I’ll make you feel good sweetheart - I promise.”

Atsumu whines into his mouth when he begins stroking his cock, using his thumb to spread the precum over the head, adding some slick to his movements. Kiyoomi groans feeling Atsumu pulse against his hand - he was so hot and wet and fuck he wanted to /devour/ him.

“Wanna touch ya too Omi.” Atsumu mumbles against his lips reaching down to fist Kiyoomi’s cock only for the other to swat his hand away. The blond makes a nose of confusion only to choke on air when Kiyoomi’s large hand wraps around both of them.

“Ah! Yes!”

“Fuck!”

They both breathe heavily against each other - months of tension finally coming to a head with each stroke of Kiyoomi’s hand. He surprised at how much fucking precum they’d both been producing, the slick slide of his hand nearly had his eyes crossing.

Kiyoomi can’t remember the last time he’s been so fucking turned on.

“Faster. /Faster./” Atsumu demanded, his voice pitching higher, whiner - his hips thrusted forward urging Kiyoomi on.

Who was he to deny his pretty boy a damn thing?

He tightened his grip before increasing his pace, taking in every moan and cry that left Atsumu’s pretty lips. He leaned forward to bite along his collarbone, marking it up for the world to see -
one of the only exposed parts of his chest since Kiyoomi had somehow managed

to only unbutton the first few buttons of his shirt.

He groans low and deep when he feels that he’s closer - Atsumu must be too by the increase of moans and rapid calls of his name. Goddamn he never thought the sound of his name would sound so sweet on someone’s tongue.

Atsumu digs his hands into Sakusa’s curls, tightening his hold as he reached his peak “Yes, yes Omi, yes!”

Kiyoomi could only hold on as high thighs shook from the intensity of his own orgasm, his cum mixing in with Atsumu’s, thankfully, missing their shirts "Fuck, /Atsumu/"

Several quiet seconds pass as they come down - Atsumu still has a hold on his hair while he keeps his face buried in the blond’s neck peppering it with kisses.

“Well.” Atsumu exhales shakily, “That was fun.”

Kiyoomi snorts “Yeah. Fuck that wasn’t how I wanted our first time to go.” He runs his hand over his face to cover his blushing face.
Atsumu only laughs and allows him to pull away to begin their clean up.

"A lot of our firsts were a little unconventional today, this seems on brand for us.” He grinned, adjusting his clothing to make himself presentable again “Wanna know something?”

Kiyoomi looped his belt back on while shooting Atsumu a skeptical look “Should I be afraid?”

The shorter man smirks and wraps his arms around Kiyoomi’s neck, rising slightly on his toes to peck his lips “This was my first time hooking up with someone at a wedding.”

Well...this really was a night of firsts wasn't it?

“Hm, wanna know something from me?” Sakusa asked, tightening his hold on Atsumu’s hips, kissing him once more, eyes swirling with desire and hunger “I think…you should come over after this so we can see how many more firsts we can have tonight.”

“That's the best idea you’ve had all night Omi.”

DAY 1 of SakuAtsu week done! This wasn't what I originally had planned for today but I'm so so happy with this thread! I hope you enjoyed!!