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The sun glaring through a small window wakes Merlin. He groans as he shifts against the hard pallet of the bed beneath him, used as he is now to the soft mattress of Arthur’s bed. With another groan, Merlin lifts himself up, blinking in confusion at his surroundings. Why on earth is he in his old chambers in the physician’s quarters? He must have gotten more drunk than he realised last night.
Merlin's joints crack as he sits up, manipulating his stiff body parts. He rubs at his neck in an attempt to bring relief to his sore body before forcing himself out of bed. Gaius is snoring loudly in his own pallet in the main room. Merlin spares him only a glance as he stumbles across the main chamber and through the door into the hallway.
When he finally arrives back at his chambers, he finds Arthur snoring softly into his pillow, body facing down and head turned to the side. The stiffness and soreness of his body in the early morning is forgotten as he stares at his king fondly. Having apparently kicked the blanket off of himself sometime in the night, Arthur lays spread out on his bed, his rump perfectly placed to drive Merlin insane.
Naturally, Merlin stumbles to the bed and buries his face in Arthur’s rump. He hears a groan from the top of the bed as he pulls Arthur’s sleeping trousers down, placing a sloppy kiss against the exposed cheek.
“Wha-” Arthur slurs, his voice heavy with sleep, but then Merlin is burying his face between Arthur’s cheeks, licking at the furled hole. Merlin has quickly realised that he loved this the first time he tried it. He could eat Arthur out for hours. He could listen to the sounds Arthur made for an eternity.
Arthur lets out a startled moan as Merlin’s hands pry his arse cheeks apart, exposing him enough for Merlin to lick at his hole. Arthur jolts beneath him, but Merlin holds him down and continues to lick and suck at the furled skin. He doesn’t notice Arthur turning to look at him, busy as he is driving Arthur slowly insane.
“Merlin, what are you- fuuck…” Arthur trails off, his words turning into a filthy moan as Merlin spears his tongue, fucking into Arthur and opening him up. Then Arthur is humping back into his face. Merlin moans as Arthur’s arse is forced further into his face, sucking, and licking at the hole beneath his mouth, moaning at feeling and taste of his king.
Merlin groans loudly into Arthur’s arse as he feels strong fingers threading through the strands of his hair, pulling him in closer. As much as Merlin has always loved this, what he loves more is how much Arthur loves this. He’d been so hesitant the first time they’d tried, but had quickly turned desperate, fucking his hips back desperately onto Merlin’s tongue.
It’s not until Arthur’s moans grow pathetic that Merlin finally pulls away. Arthur is loose enough from his tongue that Merlin can slide two fingers inside him easily. He delights in the startled moan that falls from Arthur’s lips.
Merlin leans up, trailing sloppy kisses along Arthur’s spine until he can press wet lips against Arthur’s ear.
“Come on sweetheart,” Merlin says huskily, “fuck yourself on my fingers.”
Arthur lets out a moan that sounds almost confused, hips stuttering back. Merlin groans deeply as Arthur’s hole clenches around his fingers. Burying his face in Arthur’s neck, Merlin basks in the clenching heat surrounding his fingers. Arthur had always been so eager, ever since the first time.
“Come on Arthur,” Merlin says again, almost taunting his king.
To his delight, Arthur forces his hips back and onto Merlin’s fingers almost involuntarily.
“Good boy,” Merlin breathes against the skin of Arthur’s neck. He’s somewhat surprised but no less aroused by the startled moan that is wrenched from Arthur’s lips as Arthur thrusts his hips back again, grinding down on Merlin’s fingers. Merlin knows Arthur’s body well enough to know that Arthur’s cock is likely twitching, drooling pre-come against the luxurious sheets of his bed.
Merlin laughs softly, the sound almost erotic, as Arthur begins to fuck himself on Merlin’s fingers. Merlin finds himself panting into Arthur’s neck, groaning as he imagines his cock taking the place of his fingers. All the while, Arthur continues to thrust his hips back, even pushing his knees into the bed and arching his back to force himself harder onto the digits thrusting inside him. God, Arthur is perfect.
As expected, Arthur’s body freezes as Merlin crooks his fingers, rubbing at the sweet spot that he knows will drive Arthur insane. Arthur cries out as Merlin’s digits rub against that spot, clutching the pillow beneath him as he circles his hips, evidently desperate to have more of Merlin inside him. And God, Merlin wants to give it to him.
“Think you’re ready for my cock?” Merlin rasps out, lips pressed to Arthur’s ear. A broken cry is the response Merlin receives. He chuckles as he withdraws his fingers, squeezing one of Arthur’s arse cheeks in his palm, receiving another desperate groan in reply. “Don’t worry sweetheart, I’ll give you what you need.”
“Merlin!” Arthur sobs in his pillow, thrusting his now empty hole back toward Merlin. With a groan, Merlin reaches out to grab Arthur’s arse cheeks in his hands, squeezing and pulling them apart to expose his hole. He leans across the bed to pull some oil from Arthur’s bedside table, using it to coat his cock.
Breathing heavily, Merlin presses the tip of his cock to Arthur’s hole. He watches greedily as Arthur tenses up, eager, desperate for more. With an evil grin, Merlin slaps his cock against Arthur’s prepared hole, delighting in the reaction he receives.
A moan deep from within his throat is wrenched out of Arthur, and then the king is reaching back to pry his cheeks apart, exposing his hole to Merlin, who groans at the sight. Merlin slaps his cock against the prepared hole beneath him a few more times, becoming steadily more incensed as Arthur writhes on the bed, desperate in his need to get Merlin inside him.
Finally, Merlin can’t stand it anymore and presses the head of his cock to Arthur’s hole once more, before burying himself inside in one thrust. Arthur lets out the sluttiest moan Merlin has ever heard, clenching down on his cock as he comes against the bed beneath him. Merlin laughs as Arthur’s body works around him, delighting in Arthur’s obvious joy at being so thoroughly owned by Merlin.
When Arthur has calmed down, melting into the mattress beneath him, Merlin smacks Arthur’s arse hard. His cock twitches at the moan he receives in response. Merlin buries his fingers in Arthur’s hair, yanking his head back and exposing his throat.
“Did I say you could come?” Merlin asks Arthur, his voice coming out in a throaty groan. Arthur’s response is a shattered groan as his back arches and his hips fuck back onto Merlin’s cock. “God Arthur. Fucking cockslut.”
This time Arthur’s moan is loud and pathetic as he desperately writhes on Merlin’s cock.
“Think you can come again, sweetheart?” Merlin teases him, pressing soft kisses along the column of Arthur’s neck.
Arthur moans, nodding his head against the soft pillow beneath him. Merlin pulls Arthur’s hips back to grasp at Arthur’s rapidly hardening cock.
“You know, when you writhe around on my cock it gives away how much you love this,” Merlin observes, circling his hips.
Arthur is no longer moaning, instead sobbing into his pillow as he fucks himself back on Merlin’s cock. He’s delighted as Arthur moans out his pleasure, arching his hips to absorb Merlin’s animalistic humping against his arse. Arthur sounds as though he’s never been happier in his life.
Merlin doesn’t know how long they go on like that as he fucks into Arthur, moaning with him as their hips slap together. He slaps Arthur’s arse again with the open palm of his spare hand, cock growing impossibly harder at the resulting slutty moan that falls from Arthur’s hips.
“Come on Arthur,” Merlin grunts as he tries to fuck into Arthur even harder. “Want to feel you coming on my cock again. Show me how much you fucking love it.”
Arthur screams as he tightens around Merlin, coming again into the covers beneath him. Arthur barely has time to recover before Merlin is pulling out of him and flipping him onto his back. Merlin moves until he’s straddling Arthur’s waist, furiously jerking at his hard cock. Arthur’s hands come up to clutch at Merlin’s thighs, cheeks flushing a deep red and mouth dropping open as he stares longingly at the wet head of Merlin’s cock. Merlin knows that look, knows what Arthur wants. He knows Arthur too well.
“Open your mouth,” Merlin commands. Arthur’s eyes widen in shock briefly before he’s obeying Merlin, mouth dropping open and his tongue sticking out. Merlin groans at the sight and speeds up the hand on his cock. “Fuck!”
Merlin doesn’t close his eyes, refusing to look away for even a second as he finds his climax, moaning loudly as his cock spurts onto Arthur’s waiting tongue. He moves in closer to ensure each spurt from his cock finds it’s way into Arthur’s open mouth. He watches greedily while Arthur moans as Merlin’s climax coats his tongue, eyes rolling back in his head at the taste. Merlin holds his cock out, knowing what Arthur needs, and is unsurprised when Arthur swallows with a moan, before pressing a wet kiss to the tip of Merlin’s cock.
“Fuck Arthur, you’re so perfect,” Merlin groans, his heart aching with the love for this man.
Merlin sits back on Arthur’s hips, panting at the mess of a king beneath him.
It’s not until later when Merlin is walking the halls of the castle that he realises the problem. Namely, he spots Uther leaving his chambers.
Uther is alive. Uther is king.
Merlin has accidentally travelled back through time and fucked what he thought to be his king but had turned out to be his prince into his bed.
Fuck.