Thread by @ChalkOfThValley

Ugh horny #Kurosheith thoughts in my head this morning! A/b/o omega Keith, alphas Kuro & Shiro

Kuro is wandering the Castle late one night, restless and on edge but not knowing why. He's pacing the common room when he picks up on an unusual smell. His nostrils flare as he

breathes it in. Baked cinnamon and honey, and warm sandalwood and pine. It's enticing. It warms something deep inside Kuro that he can't quite place. He instinctively follows the smell, noticing it deepening and warming the closer he gets to the source. I

It sparks a fire in his gut, and with a jolt he feels arousal spread through his veins.

He growls low in his chest as he stalks down the hallways following the scent. His vision tunnels and all he can think about is finding the source and claiming it as his own.

Kuro stops suddenly as the scent peaks. He's found the source.

A bedroom. Shiro and Keith's bedroom.

Before he even realises it, Kuro is pressing his palm to the scanner and opening the door.

Kuro is hit with a wall of heat and musk as the door swishes open.

He breathes in deep, pupils dilating fully at the sight that greets him:

Keith is laid out on the bed like an offering, black hair spilling across the pillow and eyes squeezed shut in pure bliss,

his bottom lip sucked in by sharp little canines as he whimpers and whines.

Whimpering and whining because Shiro looms over him, Keith's wrists held either side of his head, his thighs spread obscenely around Shiro's waist.

Shiro stills his frantic thrusts when Kuro staggers a few steps into the room, his head whipping around to glare at Kuro.

That rich, warm, arousing scent spikes sharply with something dangerous, and Shiro bares his teeth and growls loudly.

Keith opens his eyes and gasps as Shiro suddenly drops his weight over him, trying to shield him from Kuro's sight.

"Mine." Shiro rumbles out. Then louder, harsher, "MINE."

But Kuro isn't heeding Shiro's warning as he steps further into the room. His own scent has turned deep and hot, and it makes Keith whine loudly.

Shiro growls again as Kuro approaches the bed, but cuts off with a confused sound as Kuro reaches out to run a hand along his spine,

reaching down to grasp at the swell of Shiro's ass.

This makes Shiro jolt, pushing his cock deeper into Keith below him. Keith gasps and whines, but neither Shiro or Kuro are paying any attention to him.

Their eyes are locked on each other,

#nsfw

as Kuro kneads the globes of Shiro's ass with both hands.

"Kuro?"

"Mmm, you look so good, Shiro, spearing Keith open. You fucking smell amazing." Kuro leans down and licks a stripe across one of Shiro's cheeks, before biting down.

#nsfw

Shiro gasps as Kuro's teeth scrape across his sensitive skin, then moans as his hot tongue licks across him in apology.

"Keith," Kuro asks the omega, and Keith squirms as he finally gets some attention from the alphas. "You don't mind sharing, do you?"

#nsfw

Sharing? He's not sure what Kuro means and is just about to ask when he feels a hot tongue swipe over his hole where he is split open on Shiro's cock.

"Jesus Christ," Keith swears, tossing his head back and moaning loudly as Shiro starts thrusting into him,

#nsfw

while Kuro licks along the underside of Shiro's shaft and plunges his tongue into Keith's hole.

"Fuck! Kuro, fuck, that feels good," Shiro is whining now, hips stuttering in and out as he starts to lose control.

#nsfw

Kuro pulls back to watch Shiro and Keith for a moment, but he doesn't give them long to recover before he leans back down to lick into Shiro's hole in time with his thrusts into Keith.

"Ah! Holy fuck!" Oh, but how Kuro loves hearing Shiro lose his mind

#nsfw

Kuro licks and sucks at Shiro's hole, driving his tongue inside to stretch Shiro open, while Shiro keeps fucking into Keith.

The scent in the room is overbearing and hot, driving Kuro closer and closer to the edge.

#nsfw

Kuro feels one of Shiro's hands scrabbling through the sheets, before a bottle of lube is thrust into his hand.

"Kuro, gods, fuck me already." Shiro whimpers, and /fuck/ if Kuro won't comply with that.

He pulls back just long enough to slick his cock up,

#nsfw

before grabbing Shiro by the hips and pushing in hard and fast. His weight pushes Shiro down onto Keith, and the sounds of them all moaning echo through the room.

Keith is whining and trilling beneath them, eyes screwed shut and hair plastered to his forehead.

#nsfw

Kuro takes a moment to breathe deeply, flexing his hands on Shiro's hips, then running them up and down his sides.

Shiro growls deeply again, and squeezes tight around Kuro's cock.

Taking the hint, Kuro begins a slow, tortuous pace, sliding out and then slowly back in

#nsfw

to Shiro's tight hole.

Kuro feels a hand grasp his against Shiro's side, and looks down to see Keith staring straight at him. Keith's eyes are blown wide and pleading, and he gasps loudly with every breath.

"Kuro, ah.. please.. fuck us already!"

#nsfw

Shiro and Kuro both growl at this, and Kuro starts thrusting hard and fast into Shiro, fucking him down in to Keith.

Keith tosses his head from side to side, a string of incoherent curses falling from his lips.

#nsfw

Shiro can feel his knot begin to swell, and starts to push himself down and back up in time with Kuro's frantic pace.

He can feel Kuro's own knot forming, and the thought of taking his clone's knot while he's deep inside Keith only further spikes his arousal.

#nsfw

Suddenly, with a loud shout, Kuro pushes his knot all the way inside Shiro and comes, hard. The feeling of his release pushes Shiro over the edge, and he just manages to seat his own knot inside Keith before he's coming too.

#nsfw

The world whites out.

When Shiro comes back to himself, it's to Keith looking blissed out and well fucked below him, purring loudly.

He wriggles his hips and feels the dead weight of Kuro across his back.

#nsfw

The movement stirs the man, and Kuro grumbles softly before clamping his teeth around Shiro's nape.

"Stop moving," he manages to grit out between his teeth, and Shiro buries his face into Keith's neck and grins.

Keith whines in distress. Being squashed beneath two horny Alphas is great during sex, but now he just can't breath.

Kuro pulls off and flops to one side of Keith, and Shiro to the other.

Keith immediately rolls into Shiro's space and buries his face in his chest.

#nsfw

Shiro wraps his arms around the sated omega, before looking up and catching Kuro's gaze.

"What the fuck, Kuro?" He asks the clone.

Kuro looks down, cowed. He might be an Alpha, but he will always be second to the original.

"I'm sorry," he simpers, "I smelt you together and something just snapped, I couldn't help it."

"Do you want to claim him?" Shiro questions, tone sharp.

"I... I want you both."

Shiro just stares at Kuro for what feels like a lifetime.

"Okay," he finally says, and his words are softer, "because he is not going to be satisfied with just one alpha anymore."

"And you?" Kuro hesitates to ask. He was drawn here by the scent of them both. He's not sure what he will do if Shiro doesn't want him too.

Shiro reaches out and grips Kuro on the back of the neck firmly.

"You are not going anywhere." And he leans in over Keith and claims Kuro's lips with his own.

Fin!

@threadreaderapp unroll