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Multitasking

Summary:

Loki attempts to fuck Sylvie and Thor separately and simultaneously, using a duplicate, without them realizing. When Sylvie catches on, things take a turn. Who will have the last laugh?
**This does NOT need to be read in series order. It's just some fun duplicate casting Sylkior porn.**

Notes:

This takes place after Endgame and Loki s1, when Loki and Sylvie have come to live with Thor outside of New Asgard.

(See the end of the work for more notes.)

Work Text:

Sylvie tipped forward a bit, balancing on her hand splayed over Loki's belly, getting the angle just right. The muscles under her hands raised, hardened, retreated as they worked to lift his hips to meet her as she pressed herself up and down. Perfect. It wasn't going to take her long like this, Loki's eyes screwed shut in pleasure under her, his hands drifting blindly up and down her thighs.

Such a greeting from him upon waking was the last thing she expected. Thor slipped into her room at dawn on the regular, to enjoy the tender morning hours grinding and swaying with her in a groggy, lusty haze while his brother slept in. But Loki? He hated waking up early, and typically had to be plied with bowls worth of coffee before engaging in such vigorous activities.

Sylvie smiled, her arousal swelling with her appreciation of the surprise. She slid her hand up to the base of his throat as she lowered herself to kiss his mouth. 

His eyes didn't open, and that was odd. Come to think of it, he'd been rather quiet. It was early for him, yes, but Loki could never shut up, and sex was certainly no exception to the rule. He liked to talk, and he liked to look, and at the moment he was doing neither. Sylvie set her pointer finger to his temple, feather light, and it lit with a tiny flash of green. Loki's eyes snapped open. 

"Are you doing magic right now??" She asked. The question was entirely rhetorical. 

"Maybe?" Loki replied, a swallow making its way down his long neck. 

Sylvie was about to demand elaboration when, in the silence between them, she heard Thor through the thin wall that seperated their rooms. 

"Yes, like that my love. [Inaudible]...so tight...so perfect...," said Thor's drywall muffled voice.

Sylvie realized she was staring at the wall like she could see through it. 

She dropped her gaze back to Loki, raising her brows high enough to touch her hairline."Is...is Thor fucking a duplicate right now?" 

His mouth widened into a tight smile. "I, er, wanted to see if I could do both at once without either of you noticing." 

Was he feeling both at once? Sylvie was tempted to ask, despite feeling fairly sure this crossed some kind of line. Loki wrapped his arms around her, finding purchase to resume thrusting, hard and purposeful; he leaned forward and took her nipple into his mouth, working it with his tongue just so. He was trying to distract her.

Sylvie let herself wallow in how good the distraction felt for a moment before she reached out and thumped her fist against the wall.

"Thor!" She called. "That's a duplicate you're fucking--"

Loki growled and smacked her hard on the ass. "Spoil sport!" 

"--thought you'd want to know," she finished. 

There was the sound of a grumbled argument, and then the door of Thor's room opening. Sylvie hopped off Loki--he whined at her for it--and opened the door of her own room. She nearly bumped into Thor in the hallway, and had to suppress a giggle. He looked the part of a fertility deity to the point of absurdity, out of context as he was, dewed with perspiration, his hard, oversized cock bobbing about like a friendly wave, slick and glistening with recent use. The duplicate Loki leaned against the wall behind him, flushed and glassy eyed in a way he only got when Thor blissfully ruined his ass. 

She felt the real Loki slide into the hallway behind her, bringing the number of bobbing erections she shared company with in the small space to three. 

Thor looked back and forth between her and the real Loki, just as naked and sweaty, and connected the dots. 

"Why did I get the duplicate?" He asked, sounding offended. 

"Because we share the same magic, obviously, I would have felt it right away." Sylvie replied.

"All in a bit of fun!" Loki said, tipping his head to one side and smiling, his duplicate mirroring him like a puppet. It was creepy as Hel.

"Yeah, well, go fuck yourself. Literally," Sylvie shot back, and took Thor by the hand. She dragged him into his room and cast a number of locking charms on the door. 

"Hey!" Loki called from outside. 

"Let's be really loud," she said, kneeling on the huge bed and patting her own backside in invitation. 

Thor needed no more explanation or encouragement. He grinned, moving into position behind her, wrapping a thick arm across her chest so their torsos pressed together. She reached down, cleaned and reslicked him with magic, and the resulting groaning gasp when he pushed his massive cock into her was something she'd never have to exaggerate. 

"Gods you're so much bigger than your brother," she said pointedly toward the door, and Thor's chuckle was a rumble against her back.

Then he started to move, fucking her with all the ferocity he had been splitting Loki's duplicate open with before she alerted him--more, maybe, Thor was always the most fun when a little bit of anger tempered his sweetness. He dragged her down with his arm to meet his thrusts, as if she was a doll in his hands, knocking the breath from her in needy gasps. She buried one hand into his hair, reaching down to rub circles against her clit once, and again, and again, before she came on a shout; a shout she made sure was Thor’s name, and loud, as he clamped his teeth into the back of her neck. If it turned into a babbled litany as he fucked her through it, and past it, into a drawn out state of pseudo-climax, all the better. Somewhere in the haze of her mind Thor was repeating her own name loudly, for effect.

When he finally stilled, let her breathe, and the room reduced to the sounds of their ragged exhales, Loki spoke into the quiet. “Joke’s still on you.” 

They both swiveled their heads toward the muted thump on the door, the sound of a body being pressed against it. Then, wet sounds, a rhythmic knocking against the wood, and the most filthy, humming pleasure sounds Sylvie had ever heard issue from Loki’s throat, right up against the thin separation of wood. 

“Have you ever seen Loki have sex with his duplicate before?” She whispered to Thor. 

He pulled her closer so his head was over her shoulder, his beard rasping against her cheek. The movement jostled their joined bodies, sending little licks of pleasure through Sylvie, and they rocked together for a moment.

“Yes,” Thor murmured straight into her ear, his breath warm and tickling. “Not long after he first learned such powers I walked in on him...masturbating that way. Things, well, got out of hand quickly after that.”

Sylvie snickered. “Tag teamed by Lokis!” She said a bit louder.

“Shhh,” Thor replied, clamping his hand over her mouth, laughing against her and working his hips in a way that made her whimper and squirm. 

The noises on the other side of the door increased in intensity, turning into throaty, full chested moans that made the hair on Sylvie’s arms stand on end. Thor released his grip on her and they scooted apart. 

“Was pressing himself up against the door the most clever idea?” Thor asked softly, giving Sylvie a raised eyebrow. 

“Nope,” she said with enthusiasm, scrambling over to sit on the edge of the bed.

Thor moved to join her, sitting cross legged. Sylvie could hear Loki biting his lower lip against his own moans and strangled curses, the little shit. But the door he was leaning against was old and didn’t latch well on its own non-magical accord, so the joke was on him. She waved the locking charms away with a flick of her hand and it gave. Loki tumbled through face first, his cock wrapped in his own hand, and hit the floor with an umph. The duplicate, kneeling and wet faced, pitched forward onto his hands. Loki flicked his hair out of his eyes and glared up at them. 

“Oh, by all means, don’t cease on our account,” Sylvie said, spreading her arms in a magnanimous gesture. 

“We know how much you like to put on a good show,” Thor added. 

Loki climbed to his feet, putting on as much of a dignified air as someone could when standing flushed pink, chest heaving, with their dripping cock out at full mast. He shot the two of them a sneer before taking up position against the dresser, side on to their view. He dropped his chest to the surface to hold his weight, and then reached back with both hands, spreading his ass cheeks wide. The duplicate went to his knees behind Loki’s rear, turning to flick his long tongue at them before turning his attention to his maker’s waiting hole, presumably burying said tongue into him as far as it would go. His throat worked as he licked and thrust, and he reached up to knock Loki’s hands aside and take over spreading his ass. 

Loki moved one hand to his cock, using the other to smooth his hair back from his own face and tuck it behind his ear, giving them a clear view of his expressions as he stroked himself and made more of the throaty moans that had called to them through the door. He turned toward them, catching their eyes in turn through his lashes while he worked his quivering lower lips between his teeth, pushing and grinding his ass into his duplicate’s eager face. Maybe the joke was on them, in the end; neither she nor Thor could ever compete with Loki’s flair for performance. They were suckers for every tremor moving over his languorous, stretched out body, the way his hand worked in slow twists over his cock, and he knew it. Every tendency for exobitionism and submission had bubbled to the surface, and Loki was loving every minute of it. 

The duplicate slipped a finger into Loki’s ass along with his tongue and Loki bucked forward with a cry. “Yes, get me nice and slick and open for my brother’s fat cock,” He said, gaze locked on his onlookers, “or maybe my sister’s.”

“I’m not your sister,” Sylvie growled.

Loki made a very pretty pouting face. “No, but it sounds dirtier, doesn’t it?”

Thor let go a tiny, distressed whine next to her that only Sylvie heard, his lack of release so far that morning catching up with him. She finger walked her hand over to his lap to stroke him, and he let out a grateful huff of breath.

Loki had reached a fever-pitch in his performance, thrusting himself back onto what was at this point a tongue and multiple fingers. “ Fuck, yes, stretch me wide open, just like that, fuu--” He babbled, spending himself in twitching bursts down the front of the dresser.

He brought his arms up to pillow under his head on the hard wooden surface, and the duplicate vanished behind him in a flash of green as he regained his breath. His entire body glowed under a sheen of sweat.

Sylvie sighed and conjured a strapon around her hips, completing it with a truly massive, give-Thor-a-run-for-his-money toy cock. “Fine, good show, 10/10, you’ve earned it.”

Loki stood, bowed, blew a kiss, and walked over on wobbly legs to straddle her. She gave Thor’s cock a final squeeze and let go to take Loki by the hips and guide him down. There was the barest tug as the toy's blunt tip met his inner rim, and then it slipped full in, so he came to rest against her hips. 

“Holy shit,” Sylvie breathed, and Loki smiled perhaps his smuggest smile she had seen yet, wiggling and grinding against her, humming with satisfaction. 

“Thor,” She said, and he snapped back from the seeming trance he had fallen into as he watched it all unfold, “I think a cock would go a long way in wiping that smug look off his face.” 

Loki bent his neck back, opening his mouth wide, and stuck his tongue out, his eyes crinkling shut in anticipation. Then again, maybe it wouldn’t.

Notes:

I've previously worked in the Thor grabbing the backs of necks trope, now I've gotten in the Loki falling on his stomach trope!

You can find me on Twitter @Invis1ble_Hand

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