Work Text:
'Don't mind me, I'm just here to pick up something.' Senkuu said as he trudged through the lab where, unsurprisingly, Xeno and Stanley were still discussing the details of the moon mission set for the following day.
It had been a busy day, and tomorrow would be by far more stressful. Every calculation had been double checked at least twenty times, every engine carefully maintained, trajectory down to a millimeter - all that was left now was to get some rest, and maybe say some goodbyes. Just in case something went wrong.
So of course, Stanley and Xeno would be there, entwined hands resting atop the workbench as they relished in the last few hours they had together before the big departure, especially considering they had reunited not so long ago.
And Senkuu, too, had things to do. Stress to relieve. Tension prickling all over his skin that he needed to scratch, if only to have a clear head the following day.
Senkuu barely spared a glance at the two Americans, and he took ahold of one vial lost in the middle of a dozen others, one tiny flask with translucent liquid that could serve many purpose and that made Xeno raise his brows then smirk a bit.
'And where, pray tell, are you going with that ?' Xeno asked, voice full of questions and a sliver of accusation that made Senkuu's grip around the vial tighten.
Ah, well, he could lie. Could say he just needed to hydrate his skin, or grease some kind of gear, but defiance and embarrassment spurred him to answer before he even thought of an excuse.
'None of your fucking business.' He snapped as he pocketed the flask, tucked it inside his lab coat for later use.
He was about to turn around and exit the room, to leave the two lovebirds to their own activities (they were probably going to kiss dramatically or something like this, and Senkuu didn't particularly want to witness it and stand by the sidelines) but Xeno held him back with a finger pointed in the air and a small cough to clear his throat.
'Hold on. It is my business if you're stealing this thing I was about to use.' He explained without a hint of shame, and Senkuu realized that his mentor could definitely tell what the intended use for that liquid was. Had the same thing in mind.
'Just make some more for yourself and let me be.' The blond retorted, already feeling the heat of embarrassment at being found out flush his cheeks.
He had no reason to feel ashamed. Senkuu was only a young adult with too much weight on his shoulders and the occasional need to blow off steam without wasting time on trivial things such as romance.
The mission tomorrow could either save or doom all of humanity, so, yes.
He needed to bend and break from time to time.
Xeno chuckled, then shook his head.
'Look, you can either fight Stanley for it, or... we could share. You could stay here.' He offered, although his words sounded more like an order than a suggestion, and Senkuu wasn't sure what to do with it. He only stared at his mentor - at the dark eyes shining in the half dark of the lab, already full of lewd suggestions that the blond had not seen coming but could now picture vividly in his mind. 'It is getting late already, we were about to call it a night and move on to other... activities.'
The older man let that last word hang in the air between them, the atmosphere thickening by the second as Senku eyed him warily. His curious gaze slid down his mentor's pale throat then down his partner's torso until they reached the place where Xeno's palm was openly fondling Stanley's thigh. Ah... Senkuu was starting to feel oddly self-conscious now, and he wondered if he had just walked in on something or if Xeno was only now getting started for the sake of messing with his mentee.
Or to bait him. Or both.
Not that the young scientist hadn't thought about it at least once, during these long nights spent together in the lab building rockets. Not that he hadn't already seen the gaze full of yearning on Xeno's face whenever Stanley's name was brought up and then let his mind wander, imagining what exactly these two could have been doing... and how they'd look when in the middle of it.
He had even touched himself at the thought, once. Only once, when no one was available to help him get some well needed release and Senkuu had blamed his interest for his mentor on the fact that they were just spending way too much time together.
But it was a lie, and Senkuu had eyes. There was no denying just how handsome these two men were, even more so when together, and the aura of power shrouding them only made them more alluring.
So... The prospect of staying here wasn't distasteful. It was quite the opposite.
And Xeno's gaze on him was more than inviting and a little convincing.
'No thank you.' He forced himself to say, although he couldn't quite understand why he was refusing. Was he afraid that sleeping with them would make their relationship awkward afterwards ? It hadn't been a problem until now... at least not with Ryusui.
'Why ? Are you going to lie to my face and say that you were not going to use that stuff as lubricant ?' The white haired megalomaniac asked in faked disbelief, but only in his voice ; his eyes were already trying to see past the collar of Senkuu's shirt, maybe looking for almost faded hickeys, some clue to confirm that his mentee was indeed up to no good too. 'You may die tomorrow. So tell me, Senkuu, who are you going to spend the night with ?'
Xeno inquired, and it was not a question about whether or not Senkuu was going to spend the night with someone, that was already a given. He was only curious about who, probably hoping it would be them. The three men in this room deserved the break, deserved some foolishness.
'... Ryusui.' Senkuu may as well admit it, then at least Xeno would know where not to look for him and not to disturb. Furthermore, there was no point in lying, not when the flush on his cheeks already belied the tale.
Xeno's smirk grew wider.
'Oh, elegant, but not a surprise. So, you love blond and muscular men ?' Xeno taunted as he moved away from the workbench and took a few steps to stand in front of Senkuu, his resolute gaze pining him in place. 'Because Stanley does fit the bill... and I'd love to see you on your knees here in this lab and begging under him.'
The blond's eyes widened as he thanked himself for having secured the flask in his pocket or he would have dropped it, because these words sent shivers down all his body.
Him.
Here on the cold floor.
Stanley behind him, doing unspeakable things to him, and Xeno watching them like a hawk, maybe even touching himself at the sight of his student being ruined by his own lover in front of him... Fuck. His pants were starting to feel awfully tight, and Ryusui's image suddenly didn't cut it anymore.
Senkuu pulled on his collar to get a bit of fresh air.
'That rocket project is between us. Let's celebrate it together.' Xeno purred in his ear as his claws caressed Senkuu's chin, and the former swallowed. Let Xeno's gloved hand close around his throat ; not tight, not choking, but there and firm and slowly guiding him down.
And the scientist followed the motion.
He slowly dropped to his knees as Xeno's thumb brushed over his windpipe and the tip of a claw dug into his bottom lip, and Senkuu realized how uncomfortable it was to kneel in this instant because his pants weren't made to accommodate his forming hard-on.
It was unbelievable, how his mentor's grasp around his throat made him feel all kind of things. Unfair, how his heartbeat was already picking up, and Senkuu could feel the fabric of his shirt cling to his hot skin.
Well, he was probably going to stand Ryusui up tonight. Couldn't really look away from Xeno's dark eyes looking down on him, his voracious smirk spreading as Senku swallowed again, the hint of a whimper building behind his lips as the other man pressed his foot between his thighs.
Rubbed through his pants with the sole of his shoe.
'You'd be pretty like this. All weak and docile in between us, moaning my lover's name as he thrusts into you on my command...'
Damn.
Senkuu had known about Xeno's dictator tendencies, but he hadn't really envisioned them in such a setting... or only a little, when work got too much and he fantasized about being bent over their desk for a quick and intense break.
And now... he could get it.
The red eyes darted from Xeno's hungry face to Stanley behind him - his tall and broad silhouette backlit by the huge computer screen, every muscle outlined by his black all-over and golden eyes glinting in the dark. He radiated strength, confidence and something else, something predatory that made Senkuu tremble a bit there on the floor, where he kneeled in front of Xeno who still held his chin up.
'So... What do you say, Stanley ?' Xeno pressed, but he wasn't looking at the blond behind him. He was still focused on the one in front of him, an excited kind of fright painted all over his flushed face.
The sniper exhaled a puff of smoke, his stance confident and relaxed as he tilted his head and curled his mouth.
'Anything you want, Xeno.' He declared, already zipping down that shamelessly tight suit, and Senkuu knew then that he wouldn't get away. He didn't want to.
It didn't matter if Ryusui was waiting for him, it wasn't like the captain didn't have anyone else to fool around with, or like their encounters had ever been anything else than purely convenient. An easy choice, a good lay, an acceptable reset for Senkuu's brain. But this... Both these men eating him up with their eyes, the tight bond and trust between them strong enough to fit him in and smother him... This was something else. Something thick and powerful that fanned the flames licking at his flesh.
Xeno seemed satisfied with his lover's answer and the flash of lust crossing the younger man's face, and he scooped down, just enough to lick at the corner of Senkuu's mouth and say : 'So you're going to be a little delight, aren't you ? You're going to bend and enjoy as Stanley does to you everything I tell him to ?'
Everything I tell him to.
Everything.
Xeno was going to dictate each one of their step and watch and yes, Senkuu was eager to let him. To step down off their shared pedestal and let his mentor lead the dance, and gosh did he hope he was going to make it worth his while. It was almost too easy, how he'd been turned on by a few commands in that deep husky voice, yet he couldn't bring himself to feel ashamed of it. But...
'Tsk, what makes you think I'm a bottom ?' Senkuu rasped against Xeno's lips near his own, throat already parched because of the smoldering heat rising within him as Stanley stubbed out his cigarette and moved behind him.
Untied his belt.
'Oh ?' Xeno crooned, visibly amused by the question and the opportunity to belittle his mentee a little further. 'How can you be anything but ? Look at you, you're practically crawling on the floor and presenting your ass to us.'
Senku was not doing that.
Not yet, at least, but when his cockiness flared up and he was about to deliver some sassy retort, Xeno tugged on his shirt - and Senkuu let himself be bent forwards some more and arched his back with a whimper, the exact description of what Xeno had just said and wanted.
'That proves my point.' The scientist observed, then he stood back up not without pressing his foot down Senkuu's now very visible erection first. 'Well, if you have no objection, I'd say it's time to begin.'
Xeno added as he pulled away to fetch a chair (Senku's work seat !) that he rolled across the floor until it was mere inches away from the blond's face, and he sat there comfortably. He crossed his legs, put his hands on his lap, and observed... and no, Senkuu did not have any objection. He, in fact, had only demands and urges getting harder to ignore.
'Since you were on your way to get fucked anyway, I take it you're clean ?'
Senkuu nodded. Didn't dare open his mouth just yet lest he may let out some undignified sound, especially as he felt Stanley kneel behind him. The soldier snaked his hands under his lab coat and into his sleeves, pulled it off and yanked Senkuu's arms back as he did so, grazing his teeth on the nape of his neck as the scientist tilted backwards, following the motion.
Then Stanley slammed him back down.
Pressed his palm to his neck again, pushed him down as he hooked an arm around his waist to keep his rear there. Vulnerable. Unguarded.
'Palms on the floor, Senkuu.' Xeno ordered, sounding almost annoyed at his mentee for daring to straighten himself a bit.
The latter obeyed meekly, surprised by the electricity coursing through him whenever Xeno ordered him around. Stayed on all four at his mentor's feet as the latter sat proudly above him. Almost whimpered as he felt his pants roll down his thighs and finally, the tension in his groin didn't hurt as much.
Was still painful.
Burning.
'Chin up. Look at me.' The deep voice demanded with a small kick under his chin to force Senkuu to tilt his head back and face the sadistic glimmer in the obsidian eyes.
And Senku did.
Craned his neck up and arched his back and waited, crimson eyes silently asking for things to be taken up a notch because the arousal was already too much and they hadn't even started anything yet.
He had only been talked down into submitting. Was still mostly clothed and untouched, save for the pants sitting halfway down his thighs and binding them there... not that Senku would want to run away now.
'Stanley, you can start by prepping him. Slowly. The gloves stay on.'
If Senkuu was surprised by that last part, he didn't let it show. He saved his little jolt for when the rough surface of leather came to brush down his tailbone, startlingly cold now that it was coated in lubricant - that fucking lubricant, that tiny vial that had started it all. The gloved fingers slid down his spine until they reached that sensitive place, and then... Stanley waited.
Hovered where Senkuu's flesh craved and ached.
Gave him a second to ponder and maybe back out, and when Senkuu did none of the above and Xeno squinted eagerly, he eventually eased his way in.
Slowly, as his lover had ordered.
Knuckle after knuckle, the soldier took the time to carefully carve a place for himself in his flesh, let the thick fabric brush against Senkuu's walls until the latter started to relax and he was able to add a second finger.
Once again, agonizingly slow. Curling around before he started scissoring, his thumb massaging the delicate ring of muscles and dragging a few contented whispers out of the other man.
It wasn't... uncomfortable. It was a bit weird, yes, to be slowly worked open this way, being unable to glance back at the man doing this because his gaze was glued to Xeno. And it was somewhat embarrassing, but also so thrilling, to let Xeno gaze back at him, to let him witness him in this state.
Not naked, but bare.
Each one of his hushed breath not defiance or a smart observation, but a wordless admittance of vulnerability.
Of surrender - to pleasure, to sin, to them, to anything Xeno might want of him now and then some.
The doctor's composure faltered when a slightly higher moan escaped Senkuu's mouth.
'How does it feel, Senkuu ?' He husked, the sight of the two blonds clearly playing tricks on his voice. It sounded just a bit strangled.
'Ngh...' Stanley dipped his index, pushed with more pressure as he made way for a third finger and Senku feared his knees may give out under him. 'Aaah... it's...weird.' He muttered through gritted teeth, because the fabric was rubbing at his insides and it was thick and relentless and yet so pleasurable.
'Oh ? How does Ryusui do it, then ?' The sitting man asked, tapping his own chin with his claws as if that question wasn't totally uncalled for. As if this was a normal conversation to be having when Senkuu was trembling in front of him, Stanley three knuckles deep in his intimacy.
'Not with...gloves on you... moron!' Senkuu whined as Stanley scissored him, and gosh the stretch was already starting to burn just the right way -
'Hm, I take it he doesn't use his tongue ?' Xeno mused, his twisted smile full of promises even as he tilted Senkuu's chin with the tip of his shoe again, to make sure his student wouldn't look away. He wanted to have a front row seat when pleasure would inevitably poison his student's delicate features and wipe the arrogance off his face. 'Because Stanley does.'
And as if on cue, Senkuu was suddenly met with warmth. Not the cold unforgiving onslaught of Stanley's gloved fingers still inside him, no, but something wetter, softer, and infinitely better. The soldier licked between his cheeks then at his rim, and Senku's knees weren't the one to give out first - his arms did.
He moaned loudly as his whole body shook, then his elbows caved in and he fell face first on the ground, cheek pressed to the cold tiles as he whimpered from the heated touch pressing where it shouldn't. Stanley was stretching him with a finger on each side, licking and sucking every inch of skin and flesh not covered by the leather of his own gloves, and it was such a new and exquisite feeling and so fucking much -
Nothing like he had ever experienced before. And Senkuu knew that he should feel disgusted, mortified, and yet he couldn't do anything but buck his hips and try to fuck himself on the soldier's tongue and damn he was going to fall apart before Stanley even got to the good part.
'Chin up.' Xeno scolded again, but Senkuu couldn't raise his head now, couldn't even see how fascinated his mentor looked as the smaller blond writhed at his feet.
How powerful this made him feel, to have this prodigy of a man squirm of the floor because he said so, and because the other half his soul in his partner's body was just that talented.
Senkuu fisted the hem of Xeno's trousers as another pleasured cry broke past his lips, and Stanley didn't stop. Kept on pushing and pulling, thrusting his fingers in and out, tongue abusing his skin even as Senkuu threw his head back in a moan and almost hit his skull on the leg of his own chair where Xeno rested smugly.
'X-Xeno !' Senkuu whimpered as he dug his nails into the skin of his mentor's calf. 'Fuck- wait, ngh ! I'm gonna...!'
'No, you won't.' The professor growled as he painstakingly teared his gaze off Senkuu's panting face to glare at the culprit behind him. His crinkled eyes, his whimpering parted lips - this was a sight one couldn't easily look away from. 'Stan.'
And the soldier understood. Kept on playing with his fingers, curled an arm around the other blond's waist and took ahold of his hard length.
And squeezed at the base.
The sniper didn't let go and kept on pumping his fingers in and out until the pleasure became too much and Senkuu felt like he hit a wall - dangling on the edge, tied to Stanley's ministrations, unable to let go and yet somehow falling apart. He cried out in need and bliss, and maybe there was a bit of pleading in his broken voice as he curled in on himself and around Xeno's leg as he rode his high, defeated by the waves of new sensations and Xeno's hungry eyes on him...and yet, he didn't really came. Couldn't feel any kind of wetness on his front even as he collapsed on the floor, chest heaving and limbs shaking from the hurricane he had just been thrown into and spat out as a whimpering mess.
Fuck.
He needed a second, and he weakly raised a hand in surrender despite still laying flat on his belly, before any of the Americans decided it was time to carry on and ruin him further.
Gosh. His mind felt so foggy and yet so alive, and painfully not satiated.
'Oh, first dry orgasm ?' Xeno cackled, but he was visibly panting too. 'You poor thing, your lovers really haven't been taking good care of you, have they ?'
Senkuu took no offense. Was starting to think that indeed, they haven't been, because he was pretty sure he had never moaned like this. Didn't even care how desperate he may have sounded, didn't feel bad for the crescent marks left by his nails on Xeno's calf.
'Stanley, I'm afraid Senkuu won't last too long. Let's move on to the main part.' Xeno's lips quirked as Senkuu's breath hitched because fuck yes but also could he not have a second to bask in the afterglow and regain control of his limbs ?
Apparently not, he realized as his mentor finally hopped off the chair. 'Flip him, I wanna see.'
Stanley obeyed once again.
Stripped off his suit with the assurance only a man carved in marble could have before crawling his way Senkuu. He hooked his arms under his shoulders and threw him onto his lap as if he weighed nothing, and the blond let him, already feeling boneless despite his very stiff and neglected member.
'You good ?' Stanley worried as he sat Senkuu on his lap, keeping a clenched fist between them so as to not hurt him and wait for his approval before making a move. Before he unleashed another storm that would rip Senkuu bit by bit.
'More than good.' The young scientist muttered as he placed his legs on each side of Stanley's thighs, and he wondered if he should maybe try to ease himself down, but Xeno was all over him before he had a chance to make up his mind.
His mentor had hopped off his throne and crouched in front of him, his usually deathly pale face now a remarkable vibrant shade, eyes more alive than Senkuu had ever saw them.
'You're so greedy, Senkuu.' Xeno complained as he latched onto his student's exposed throat and littered it with kisses, and the latter moaned. Let his head loll back onto Stanley's shoulder. 'Taking my place as world leader, and now even stealing my lover ?'
Xeno smirked grimly, all teeth and thirst and desire - then he positioned both hands on the narrow hips caged between himself and his lover.
And pushed down.
Not soft, not kind, not brutal either ; more than an incentive but less than a punishment, a pressure perfectly measured to fill and burn, but not to hurt.
And Senkuu did burn.
Felt the glowing embers ignite again as the soldier picked up the rhythm behind him, sheathed himself in his smoldering core up to the hilt - and Senkuu felt himself part for him, felt the other man's need pulse and throb within him and stretch him some more.
And he howled. Moaned again as he threw his head back and bucked and arched and panted, and the soldier's pace was already relentless, spurring him higher and higher with each thrust only for him to be slammed back down by Xeno - by his touch, by his kisses, by his teeth on his throat and his hands in his hair.
Senkuu couldn't help but to pull on them, too ; on Xeno's hair, that is, because he needed to hold onto something or he was going to lose himself... and Xeno let him. Smirked wider when clouded crimson irises looked up through moist lashes.
'But you're so pretty melting on him.' Xeno praised as he kissed the small tear forming on the corner of the red eyes. 'So lewd, so sweet, so beautiful when you take it and break for us, my dear mentee.'
And Senkuu was indeed breaking, or maybe he was feeling stronger than ever, held upright by two sets of arms circling his chest and waist, two eager mouths nibbling on every patch of sensitive skin they could reach. There was no place to fall, barely enough air to breath, and he was constantly reminded of his own edges and limits as the couple kept on trampling them. It was a messy tangle of limbs and hair and grunts and teeth, and somewhere in the middle of it all, Xeno seemed to reach the limit of wanton faces he could take without acting. Couldn't help but pull his trousers down and palm himself, rubbing his own length in the non-existent space between him and Senkuu.
And what else could he do when one particularly harsh thrust made his student go cross-eyed and clutch his shoulders, when Stanley's handsome face shone then groaned behind him ?
Oh, Xeno had ideas. So many things he yearned to do to him now, like sliding into that whimpering mouth and fucking his throat, savouring each one of his strangled gasps as they'd vibrate around his length. Or tell Stanley to make space for him and join him there, to kiss these trembling lips as they'd both push the brillant scientist way past his limit, his length brushing against his lover's, painfully squeezed together as Senkuu would arch and clench and beg until his voice was no more.
But he couldn't.
Not now, not yet, maybe - probably - not ever.
He was allowed to dream nonetheless. To fantasize about how this would feel while he touched himself and Senkuu. His fingertips brushed with envy the sinful place where Stanley's hips collided with Senkuu's skin, where he could see his partner's shaft disappear into the tight embrace of his student's body - and his hand stayed there, caressing, coaxing even more moans out of the smaller blond until he felt like it was not enough. Like Senkuu's voice and soul wasn't raw enough.
He didn't have a third hand, and so he dismissed his own pleasure to focus on Senkuu's. He abandoned his raging hard-on to seize his mentee's instead, stroking him firmly, but not in sync with Stanley's thrusts, no. He squeezed and rubbed everytime the soldier bottomed out, didn't spare him for even a millisecond, made sure that Senkuu would continually have a reason to shiver, would always feel - his touch across his length, his breath in his ear, Stanley's girth abusing the most sensitive nerves buried inside of him.
And Senkuu took all of it. Quivered, whimpered, bucked his hips to get more, always more, lost in rapture but always found and held by their arms and shared ecstasy until none of them could sit upright anymore and even Stanley seemed out of breath. It was a lot, and it was coming from everywhere, relentlessly dipping him into seas of pleasure that he had no mean to escape. Chose to welcome with open arms and mouth.
And Xeno wanted to kiss him, to claim that mouth, to breathe in each and every moan and broken cry, was dying to touch and taste whenever their names rolled on those lips ; fuck, Stan, there - ah, Xeno, I can't!
Couldn't, because that wouldn't be right, because Senkuu and them weren't like that and it was really only just a wonderful moment shared without a hint of feeling, a fluke, a fleeting fantasy - and so he stretched his neck to reach behind him. He crushed his mouth against Stanley's instead, the one mouth that belonged only to him, and somehow that was when Senkuu came undone between them ; when their lips connected next to his and he clenched his legs around Xeno's waist, clawed at his back, pulled him in in a tight embrace where he was able to fully let go.
Their names spilled out of his mouth in a crude litany as he tangled his fingers in both their hair, one hand in white strands in front of him and the other reaching in his back for golden locks.
This was enough. Senkuu's voice and touch coupled with their own tongues dancing with each other was enough to do them in too, and it wasn't Xeno's fault that he came like this, not when his mentee's hips undulated against his and Stanley groaned in his mouth. This was perfect, too, because Senkuu stayed there even as they tumbled backwards, even as Xeno laid on top of him and pressed his forehead to Stanley's shoulder, his clothed chest on Senkuu's. The former closed his eyes and took a second to breathe, gave himself the time to land, his whole body a mess stuck in between them and delighted to be there.
The green tips of his hair sticking to Stanley's throat were a sight Xeno would cherish... and perhaps aim to reproduce in the near future.
'Ah... Senkuu, next time I'll want to get a bit more.' He murmured through the spoiled air of the lab, and the younger man didn't have enough energy left to articulate a polite answer.
He flipped him the finger instead.
'So... Are you still going to see Ryusui now that you reek of us ?' Xeno inquired cheekily as Senkuu buttoned up his lab coat.
This did nothing to improve his disheveled appearance. The blond wasn't even trying.
'Tsk, jackass.' Senkuu rolled his eyes as he turned around to cross the room on insecure legs, each step a bit too slow, a bit too wide. 'I'll see you tomorrow at the launch site.'
He waved him goodbye without even looking back, but Xeno still smiled at him from where he was sprawled on Stanley's lap.
'You will. Sweet dreams, Senkuu.'
Oh, he was indeed going to have a few things to dream about.