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"Welcome to the Knights of Favonius. I'll be your Captain."
Seeing Kaeya Alberich standing at the top of the stairs decked out from head to toe in his official uniform - Diluc knew he'd never be the same.
Not only is the presence of an Alpha enough to have Diluc's Omega senses weak, just the way Kaeya carries himself and exudes such charm has captivated Diluc for the past few years.
He's seen Kaeya before of course, in his training days which lasted close to a year. Even before training began, Diluc has seen Kaeya throughout the streets of Mondstadt in passing. They've had casual conversations at times, and it was in those moments that Diluc found out Kaeya's 10 years older than him.
Now, that should've made Diluc's natural attraction for Kaeya wane a bit consider Diluc is only eighteen, but it really just made it unbearable. Everything about Kaeya is something to admire and desire, so Diluc is blushing any time Kaeya so much as looks at him. His inner Omega is difficult to push down at times, especially in the times he's ever alone with Kaeya.
The knights have a strict policy of remaining on suppressants unless you have a designated partner that you take time off with in order to weather their heat and/or rut with. This helps prevent both awkward and potentially uncomfortable situations from occurring, like ones that Diluc constantly has to stop himself from daydreaming about.
Although most knew what each knight had presented as, Diluc always kepts his cards close to his chest. Some assume he's an Alpha based on his strength, while others assume he's an Omega based on his gentlemanly nature and fair features.
The truth is that Diluc's an Omega, so any time he's in Kaeya's presence, he can't help inwardly wanting to please him.
"Good to see you. I had no doubt you'd be here after I personally trained you all these months." Kaeya smiles while taking two glasses from the waiter passing through the crowd. He hands one to Diluc who's blush is darkening.
"Well, you did a great job teaching me." Diluc takes a sip of the champagne, finding the taste of it to be nice. He doesn't drink often, but he'll make exceptions for special occasions like this.
"I hope I can continue teaching you even now." There's a playful lilt to Kaeya's tone, a careful touch made to Diluc's upper arm as if to further signal that notion.
"O-Oh yes, I would appreciate that Sir Kaeya."
The title has Kaeya laughing softly before taking a step in closer to speak near Diluc's ear.
"I think we're beyond formalities, or rather, I'll make an exception for you."
It's almost like a secret. There's obviously nothing more to it than Kaeya being his playful, charming self, but the closeness still has Diluc shivering all the same.
"T-Thank you. I won't forget it."
"Good. How about we make the rounds together and talk about your first mission?"
The invitation to spend more time with Kaeya on such a special evening has Diluc filled with such happiness. He nods and quickly follows after him, never leaving his side all night.
Two months after joining the knights, Diluc finds that most of the missions are simple enough, but this one is a little more involved.
They've been tracking down Fatui for the past week, and they're finally close to finding a larger hideout of theirs. It's taken them as far out as approaching the mountains, so needless to say he's had plenty of downtime to talk with others.
It's when they're sitting around the fire during lunch that afternoon when Diluc finds himself drawn into a conversation with one of his friends, Thoma.
"Hey, do you want the rest of mine?"
Diluc looks at Thoma who's sitting next to him, holding out his bowl that has a few strips of fried chicken left and untouched.
"Are you sure?"
"Oh yeah. I made a little extra so everyone had enough, so this is more than I would normally eat already."
"If you're sure." Diluc nods, gratefully taking the bowl to finish off the remaining food.
Afterwards, Thoma takes the bowl back from Diluc to add it to the small pile of dishes he plans to take care of soon. The exchange has their hands brushing, and Diluc tries not to blush from it. He's not used to that type of contact from another person, even accidental.
"I still can't believe we got so lucky to have such a great cook on our team." Diluc says as his way of complimenting Thoma.
"Aw really? Thanks. I've been cooking for years, so it's nice that I can still do it and help out so many people."
Diluc smiles at hearing that, and they fall into a longer conversation for a bit. They talk about how Diluc never really got much of a chance to learn how to cook since his mother passed away shortly after he was born. Thoma naturally offers to show him a few, simple recipes in their free time when they're back in town, and Diluc can't see why he should say no to such an offer.
"That's so nice of you. I can help train with a spar in exchange?" It's really the only thing Diluc can think of, and he sees Thoma smile back at him for it.
"Awesome! I'm good with a polearm, but I'd still like to keep improving my skills with a sword."
Before Diluc can get another reply in, he hears others talking nearby as if to signal they're going to prepare to leave soon. He looks over his shoulder, seeing how Kaeya is talking to some of the other knights and then looking over at Diluc.
Something about how Kaeya looks at him has a shiver running down Diluc's spine.
"Sounds like we're leaving soon. Better get all of this packed up!" Thoma stands up, giving a gentle pat to Diluc's shoulder as he does so.
Diluc feels how the spot where Thoma touched burns, a strange sense of unease filling him from having another Alpha who isn't Kaeya simply touching him again.
"Be ready to go in ten minutes!" Kaeya's voice carries through the area, and everyone is hastily gathering their belongings.
The few hours that follow go smoothly enough. They continue down the path further out past an area of vast plains before they're stumbling across very fresh tracks from their target. However, they still need to gather more intel before making any bold moves.
Diluc is inwardly cursing while rubbing his arms. He didn't realize they'd be going this far out, so he didn't even think to bring anything heavier to wear for snowy conditions.
"You'd think having a Pyro vision would help, huh?" Thoma says by means of cheering Diluc up.
"I'm sure it'd be worse if I didn't have that going for me." Diluc responds, his teeth almost chattering.
The snowy conditions on the outskirts of Dragonspine were still bitterly cold. He's not accustomed to this type of climate. Sure, they trained some in these conditions to have a taste of it, but it's been a while since then, so he's readjusting to it for this mission.
Plus wearing a thin shirt that only covers to his forearms and has most of his neck still showing probably isn't helping matters either.
"Here, take my jacket. You can give it back to me later on."
The way Kaeya's voice is low, almost soothing right near Diluc's ear has Diluc biting back an undignified sound.
"W-What it's freezing out here. I don't want you to catch cold either." He turns to protest, seeing how Kaeya takes how Diluc has too much skin showing.
"I'm used to it." Kaeya shrugs off his jacket, moving forward enough to carefully drape it over Diluc's frame.
"Thanks." Diluc is blushing both from embarrassment and from having something of Kaeya's lent to him.
Most of the day is spent doing reconnaissance, so they return to a nearby settlement to retire in their own inn rooms for the evening.
Diluc finds himself curled up in bed later that night with Kaeya's jacket laid on the bed next to him. He drags his fingers through the soft fur on the collar of it, Kaeya's scent still strong and alluring even after hours of having worn the garment.
He can't help himself. All day he's had to prevent himself from thinking so many terrible things, but now that he's alone he can allow himself this moment of weakness.
It hardly takes long for Diluc to end up pushing off his undergarments, fingering himself open with oil-slick fingers and stroking over his aching cock. He bites back whines, burying his face against Kaeya's jacket to lose himself in the thoughts of how Kaeya could hold him down and fill him up.
Diluc glances at the wall nearby, wondering if Kaeya is close-by, what if he saw and heard him?
As his fingers press over his prostate, Diluc gasps into the sheet, inhaling Kaeya's scent mixed with cologne, and it leaves him dizzy with want. He leaks more over his fingers, stroking his cock faster to match the desperate way he finger-fucks himself open.
God he wishes he could have Kaeya's cock in him.
Diluc's never let anyone fuck him before, and from the first moment he ever saw Kaeya, he's never wanted to be with anyone else but him.
The mere idea of having Kaeya split him open with his cock, how thick it might be, and at the end having his cum filling and marking inside of him-
Having Kaeya bite on his neck to claim him even more, to be insatiable and having to ruin Diluc again and again-
Diluc has to muffle his moans into Kaeya's jacket, his hand stroking over his cock with such desperation, body trembling as he comes all over himself. With shaky movements he presses his fingers inside hard once more, purposefully so, making sure to prolong that intense feeling with Kaeya overwhelming him even when he isn't even truly there.
With cum all over his belly, thighs, and hands, Diluc whimpers softly from being both content and still cursed with longing all at once.
The next morning, Diluc is a flustered mess, dodging Kaeya and his gaze whenever he doesn't immediately return his jacket. He wants to properly wash it before returning it, but selfishly he wants to wear it for a while longer.
"If you're okay with it..." Diluc is about to ask, but Kaeya is already smirking and waving him off.
"It's fine. Like I said, you can give it back to me later."
A month later, Diluc still hasn't given it back to him, and Kaeya's never asked for it back either.
It's Diluc's birthday, so he knows he's going to need a distraction today simply because, it's also the day his father died.
Five years ago today, the knights had showed up too late to help his father who was already in dire straits. It's not that Diluc blames anyone involved other than the Fatui, but it was a pivotal moment that pushed him into seriously considering becoming a knight.
Truthfully, his father had always wanted him to do it, but Diluc made the choice after his death in hopes that he might be able to become strong enough to help someone else who might be in that same need his father was that day.
Diluc already planned out how he's going to keep himself occupied. He heads to the training grounds and spends most of the morning taking out his frustration on training dummies. His thoughts are a muddled mess, one that he always struggles with on this day every year since he envisions how the scenario played out.
All he knows for sure is how his father looked towards the end, bloodied and unmoving. He was carried back in through the city gates in a rush, and he couldn't even make it to the nurses in time before...
A quick thrust of his sword exerts enough force to have the dummy toppling over. It brings Diluc back to reality.
So does the voice behind of him too.
"Want a partner?"
Diluc doesn't even have to turn to know it's Kaeya. His voice sends shivers down Diluc's spine, and the connotation of 'partner' does too regardless of it being used in a different context than that.
"K-Kaeya, I thought you were on a mission?"
With a carefree shrug, Kaeya approaches with his own sword in-hand.
"Got back this morning."
Diluc would never pass up spending time with Kaeya.
"Well, if you're offering, I certainly won't refuse."
The way Kaeya's smile seems to widen upon hearing that has Diluc's heart fluttering, and the proper spar ends up being exactly what he needed to clear his mind.
Well, it cleared his mind in one way, and made it worse in others.
This isn't the first time he's sparred with Kaeya. It happened numerous times during his initial training days, but they haven't done it very often since Diluc properly joined the ranks. Going against his Captain for the first time in a long while has Diluc swept up in that anticipation, remaining quick on his feet for any of Kaeya's swift movements that were always impressive.
"Come on now, I might be a bit older than you, but you don't have to hold back." Kaeya smirks, his gaze dragging down Diluc's body for a split-second in the midst of his parry.
The remembrance of their age difference has Diluc hot all over, and he lets out a shaky breath before making his next move.
Diluc jabs and dodges in quick succession, certainly holding his own, and the dirt clouds up beneath their feet as they continue to spar without interruption. With it getting closer to early evening, most of the others have headed back inside for dinner or into town, leaving them secluded in the training ground behind the castle.
As Kaeya darts around Diluc, he ends up shifting behind of him, and Diluc knows he has to dodge and attempts to do so. He's a second too late though, with Kaeya's blade grazing his shirt to rip a hole in it along his shoulder, barely missing his skin.
The shadow of a touch is enough to have Diluc momentarily forgetting to keep his eye on Kaeya, and so he ends up stumbling with Kaeya instinctually reaching out to help him. Diluc ends up flat on his back, staring up at Kaeya who is breathing hard, having caged him in with his body and staring down at him.
"Sorry about that. You okay?"
"U-Uh yeah." Diluc breathes out in a ragged tone, completely frozen in place at feeling how close Kaeya is to him.
He's hovering just above him, mere inches away from their hips touching, and it takes all Diluc has not to make a complete fool of himself over it.
"No concussion?" Kaeya supports himself with one hand while the other moves to trace over the side of Diluc's head, threading into the locks of his red hair that are hardly tied up anymore from all the commotion.
"I-I think I'm okay." Diluc says in quick reassurance, his cheeks darkening the longer this goes on.
Kaeya's hand continues its search for a few seconds longer, lightly pressing on the side of Diluc's head to silently prompt him to turn enough for Kaeya to feel at the back of his head for any injuries. In doing so, Diluc ends up exposing more of his neck, and he swallows thickly from the realization of what he's doing.
The air grows tense after that.
As Kaeya's fingers make a steady path from the back of Diluc's head to the side of his neck, blue eyes hone in on the fair-skin of his neck that's openly presented to him in such a trusting manner.
"If you start feeling off you'll let me know right?"
Hearing how Kaeya asks this of him in such a low, husky tone has Diluc fending off the urge to whimper. He suddenly feels so small underneath of him, and fuck why is he still underneath of him like this?
"I will." Diluc says quietly, trying to keep his heart calm despite how it races when he stares up at blue eyes that are still darting between looking at him and his neck.
"Good boy."
Kaeya's fingertips lightly graze on the side of Diluc's neck before Kaeya finally withdraws away to stand back up. The suddenness of such loss and that simple praise from an Alpha, from Kaeya, has Diluc torn on making an undignified sound and pulling Kaeya back on top of him.
He suppresses that feeling enough to take Kaeya's hand instead that's offered to him, rising back upright to look up into blue eyes that seem to glaze over with an indiscernible emotion in that moment.
"We should probably head inside, it's getting dark." Diluc quickly suggests, trying not to focus too much of how he knows Kaeya's scent is all over him now.
He'll have to deal with that fact later on in his personal time.
It's during what should've been normal routine of suppressing the Abyss Mage threat at the outskirts of Mondstadt that things get entirely out of hand.
The near-constant full days of work lately have left Diluc more exhausted than usual, not to mention being overly distracted by Kaeya. It's already too late by the time he realizes what's happening. He'd forgotten to take his monthly dose of suppressants, so it's no surprise that he's now left to endure the consequences.
Diluc suddenly staggers, dropping his sword, and he has to brace himself against a tree for support as his breaths growing ragged and he's hot all over. He can immediately feel the wetness dripping down his thighs, and it cripples him to the point of gasping, closing his eyes tight to try and suppress the way his body is betraying him.
It doesn't work though. He attempts to take a step forward, only to falter and fall to one knee. His vision grows blurry, that haze of need suffocating him, and he can't move at all. There's too much happening around him, the sensory overload leaving him helpless.
There are touches on his back and arms then, and he looks up to see Huffman. Diluc isn't in a good enough state to complain on where the help comes from, but he can't help feeling somewhat crestfallen it isn't Kaeya.
"Hey! Diluc are you injured?! Can you stand?!"
What's worse is the second Huffman gets his hands on him to lift him up, Diluc feels how Huffman tightens his hold on him.
"Y-You...Archons Diluc you're a-" Huffman suddenly realizes what the true issue is. His pupils dilate, voice becoming lower as he's clearly attempting to hold back from doing more than helping his comrade. "We should get you back to town." He states, and Diluc lets out a low whine.
Diluc hates how he can't help pressing into Huffman, seeking that comfort needed from an Alpha in the midst of his heat ramping up.
Huffman is about to lift Diluc up into his arms when a sudden flash causes him to stop.
"Let him go."
The voice is commanding, and Diluc opens his eyes to see Kaeya standing there. He's gripping on Huffman's arm, blue eyes intense as Kaeya exerts such authority with his tone and presence.
"Captain, I can handle it." Huffman insists, a low growl to his words.
"This is an order. Let. Him. Go." Kaeya states once more before not even waiting for an amicable response.
He pries Diluc out of Huffman's hold, snarling at him with a fierceness Diluc has never seen Kaeya have before.
Any questioning as to what Diluc is finally being confirmed first-hand has Kaeya even more protective of him than he already had been. Not that he didn't have his own suspicions but seeing Diluc like this and enduring his pheromones has Kaeya left with no choice but to retreat from the battlefield.
Kaeya hoists Diluc up into his arms bridal style, and Diluc instantly grips at the back of Kaeya's neck to press his head in closer to the crook of his neck. Kaeya's scent alone is soothing, and Diluc whimpers from more slick leaking out and soaking beneath his armor.
"I've got you."
After whispering that reassurance, Kaeya heads south towards a mountain path that he knows will be secluded enough from the chaos nearby. He runs a good ten minutes out before stumbling across some ruins which seem like they will be a safe enough option. Kaeya slows his pace, walking inside to peer around the corridors, finding a few make-shift blankets and bed mats which signified someone must've stayed here at some point.
It'll do for now.
Kaeya carefully sets Diluc down onto the mat, and the second he does, Diluc is whining loudly and trying to pry off his armor.
"Too hot - I-I can't-" Diluc tries to speak, his voice breaking off into faint gasps from the way his body is far too sensitive.
"Let me help you." Kaeya's hands are shaking as he reaches out to help Diluc undress, already able to see how soaked he is when the armor is pulled off and only the thin barrier of slacks and an undershirt remain. He tears his gaze away, trying to control himself, his voice becoming rough. "Diluc I should go stand guard and let you-"
Diluc doesn't even let Kaeya finish. He's reacting on instinct, hastily leaning up enough to grab the back of Kaeya's neck and pulling him in close enough to whimper over Kaeya's lips, taking in his scent again that soothes and tempts him all at once.
"D-Don't go, I need you."
Kaeya's hands form into fists at his side, the last thread of his sanity waning.
"No, you don't. I won't do that to you."
"I want you Kaeya please I-" Diluc's voice breaks from that desperation possessing him, and he's about to let Kaeya go after being rejected. "-I-If you really don't want to help me, I'll just get someone else to-"
The words leave his mouth before he even intends for them to, and regardless it has the same effect.
Kaeya growls deeply, shoving Diluc onto his back to all but rip the remaining clothes off his lithe body, leaving him completely bare with slick glistening on his thighs and dripping down between his ass cheeks.
"Like hell you will." He mutters darkly, tugging off his own jacket and shirt before he's grabbing a frost potion from his holster and tossing aside his belt.
Diluc's breathing grows shallow as he watches Kaeya dribble potion on his fingers, pushing on Diluc's thighs to spread his legs open and reveal his hole that's sopping wet. He drags his fingers on the rim, pressing a single finger inside at first to stretch him open, letting the cooling effects of the potion start to soothe that overwhelming heat Diluc feels.
"You have no idea how much I've had to hold myself back from throwing you down and fucking you Diluc."
Hearing his has Diluc whining in need, pushing back onto Kaeya's finger until a second one is added, and then a third.
"I-I didn't know- but I've always wanted you Kaeya - I want you now-"
"How much?"
"Too much. I-I've h-hah - never let anyone else do this."
That confession has Kaeya's intent growing all the more possessive. Star-shaped pupils dilate, and Kaeya withdraws his fingers to grab Diluc's hips and guide him to move onto his hands and knees.
With his ass in the air, Diluc can feel how copious amounts of slick drip down his thighs. The sound of Kaeya undoing his pants to free his cock can be heard from behind him, and Diluc shivers when Kaeya's breath is hot over his neck.
"You know Diluc...I never got my jacket back."
As Kaeya positions himself, he rubs the head of his cock against Diluc's wet hole, listening to the way Diluc's breaths catch and his ass insistently pushes more into Kaeya's grasp out of need.
"I-I'm sorry." Diluc should be embarrassed and ashamed, instead he's even more desperate to have Kaeya wreck him.
Years of pining have him far too eager for it, and Diluc nearly sobs by the time Kaeya starts to push inside of his tight, slick hole. Kaeya groans at the way Diluc fits so perfectly around him, and he's bottoming out before hovering in close to speak near Diluc's neck.
"Were you imagining being a little cock-slut for me?"
Having Kaeya lingering near that spot has something primal clawing its way out of Diluc, that want to be an obedient Omega for his Alpha all too real, and he's practically moaning every single word that leaves his mouth after that.
"Yes, yes. I couldn't help it-"
"You really are a good boy, my good Omega..." Kaeya smiles in the midst of withdrawing to thrust back in hard, digging his nails into Diluc's skin as another way of marking him. "...your hole is so greedy for my cock; I can tell you wanted it."
The praise that Kaeya has often given him now spoken in such a depraved manner has Diluc's hole and thighs dripping wet with even more slick, making it far too easy for Kaeya to fuck him in such a filthy, relentless way.
"Fuck - K-Kaeya yes-! Nggh ah - want more, please give me more-"
Diluc begs as Kaeya mounts him and fucks into his soaked hole, the rough, wet smacks echoing throughout the ruins. Having Kaeya all over him and now inside of him, his scent, his voice, the coldness of his touch against the heat that rakes over Diluc's body - all of it is too much in such an intoxicating way.
"I never knew you'd be this much of a whore Diluc...even after all these years of wanting you, I think I could just stay buried inside of you for days..." Kaeya's voice is raw and intense, his canines grazing over Diluc's neck to tease at his scent gland which has Diluc shivering and choking on a gasp.
The sheer notion that Kaeya has pined him just as much for years, it somehow makes this moment filthier. Diluc is panting as he tries to speak between the pathetic sounds and pleas, his cock seeping pre-cum onto the bed mat, that intense rush already starting to overtake him.
"S-Since I first met you, I wanted you, I wanted this-"
Kaeya gives a hard, deliberate thrust that has Diluc crying out.
"Yeah? Do you want my cum too? Want it so badly you can't live without it?"
"Yes, y-yes, yes please, a-ah - Kaeya mark me, mark me please-"
Diluc's outright sobbing now, tearing at the sheet in his grasp, his head still lulled back to let Kaeya have access to his neck. Kaeya's grinding his cock in harder, his knot swelling, and Diluc comes the second Kaeya shoves inside completely.
"Such a fucking good boy." Kaeya moans deeply, dragging Diluc back in a half-thrust before his knot pops and hot cum smears and fills Diluc to the brim.
The euphoria is so intense Diluc nearly blacks out, especially when Kaeya bites down on his neck, that burn searing into his scent gland. The overwhelming sensations cause Diluc to come even more from Kaeya claiming him as his mate, that realization hitting even harder as more of Kaeya's cum throbs deeply inside of him.
Kaeya licks over the bite mark afterward, kissing up Diluc's neck as his hands rub along Diluc's sides up to his chest. He stays pressed against him for a while longer, their breaths slowly evening out as Diluc still lets out soft whimpers from how much cum has filled him, and the comfort of having Kaeya's knot and mark given just to him.
"I love you.." Diluc says with a shaken voice, feeling how Kaeya kisses up his jawline prompts Diluc to turn his head enough to see him.
At first Kaeya doesn't say anything in response, instead he's kissing Diluc intently, gently licking at his lips to deepen the kiss. This has Diluc whimpering, weaker than he already is for Kaeya, and he's craving Kaeya all over again when Kaeya runs his tongue inside to taste and claim Diluc more.
The kiss is momentarily broken long enough for Kaeya to finally speak again.
"I love you too, I want to show you that many, many more times if you'll let me..."
The insinuation of having Kaeya again has Diluc moaning a gentle 'yes'.
No one else sees them again for three days.
A month later, Diluc is called to Kaeya's office for a meeting before they head out on their next mission.
It's been interesting how things have transpired since the day Diluc's unprecedented heat happened.
Having everyone in Mondstadt suddenly know quite a few things (probably too many) about you was more than Diluc expected. Not to mention the aftereffects that rippled from someone as charming and noteworthy as Kaeya now having a partner were ones that Diluc also had to adjust to.
It's not like he hasn't gotten used to the glares and looks of disbelief from random strangers on the street, but the ones that were harder to adjust to were ones from other men who clearly had taken a liking to Diluc personally at some point in time.
The masses finding out he's an Omega only to be immediately claimed after that knowledge came into fruition was an odd thing to have happen to him.
Diluc raises his hand to knock on the office door, entering seconds later to find Kaeya setting aside a few papers.
"There you are. I was starting to think I'd have to come find you myself."
After Diluc closes the door, he's walking over to the desk, watching how Kaeya remains seated.
"Practice ran longer than expected."
"Oh? Were you sparring with one of the others again?"
Diluc already knows that look, and it has him licking his lips in anticipation.
"I was. I told Thoma I would help him since he showed me how to make your favorite dish."
Kaeya hums lowly, thoughtfully, and he's raising a hand to beckon Diluc over with his finger.
"How nice of him." As Kaeya watches Diluc walk around the desk to approach him, he turns enough in his chair to reach out and grab Diluc by his hips.
"He's a nice person."
"That won't stop me." Kaeya smirks, his hands running down to grope Diluc's ass until Diluc is sliding onto Kaeya's lap.
Diluc runs his arms around Kaeya's neck, settling on his lap to feel how Kaeya's already growing hard under the curve of his ass.
"What about this new secretary of yours? I smell her all over the place you know." As Diluc nuzzles along Kaeya's jawline, Kaeya responds with a low laugh.
"And I smell Thoma all over you. I guess giving you my jacket won't be enough this time, will it?"
Hearing this has Diluc leaning back enough to stare intently at Kaeya.
"You did that on purpose back then?"
"Of course I did, and that's not the only thing I did either." Kaeya firmly gropes on Diluc's ass, silently commanding him to roll his hips forward and Diluc obeys. "Do you really think I was going to let someone else have you?"
Diluc grinds down once more, a soft moan escaping him before Kaeya's claiming his lips in an open-mouthed kiss. The rough make-out session has Diluc growing needy and desperate, and soon he's speaking hotly into those filthy kisses.
"Fuck me on your desk. I want her to know..I want everyone to know."
Kaeya laughs into another kiss, keeping a firm hold on Diluc to hold him close as he rises from his seat to lay Diluc back onto his desk. Papers scatter onto the floor, and Kaeya makes quick work of stripping Diluc down, wanting to see have him bare so that his scent covers him entirely.
"I love that it only took a month for you to become such a cute little cock-slut for me."
Slick is already leaking heavily from Diluc's hole as he leans up to tug at Kaeya's belt, letting it clatter apart before he's undoing Kaeya's pants to free his cock. Diluc strokes over it, dragging pre-cum down from the tip, his fingers caressing on the knot to have Kaeya emitting a low growl in the back of his throat.
"I just like having what's mine. I already had to wait four years for it."
Diluc had long since admitted he'd wanted Kaeya ever since he was fifteen, and that knowledge somehow made Kaeya even more adamant on fucking Diluc to the point of overstimulation every single day to make up for lost time.
"What a good boy you were for waiting...I still have so many places I can bend you over and breed you to your heart's content."
It's not as if they haven't already fucked around various spots in the headquarters and all around Mondstadt, but the notion of having Kaeya ruin him for hours if not days again has Diluc suddenly even more desperate than he was mere seconds ago.
He's pushed back once more, and Kaeya hardly has to prep Diluc at all given they already did this once earlier that morning. Diluc mewls at the way Kaeya curls three fingers inside of him, staring up at him with adoration and want before Kaeya withdraws his fingers and aligns himself to thrust his cock inside instead.
"F-Feels so good, Kaeya, I always miss having your cock in me-" Diluc breaths out between the rough movements, curling his fingers into Kaeya's hair as he's spread out around Kaeya's cock that throbs against his inner walls in the harsh fucking.
"Mmm, I miss marking you with my cum too." Kaeya whispers against Diluc's neck, lovingly nuzzling there before groping onto Diluc's ass and pounding into him without any restraint.
Diluc's arching up from the desk, head thrown back from the way Kaeya fucks into him so deep, commanding his body in every single way to have Diluc a weak, slutty mess all for him. The lewd smacks of their hips grow louder with how wet Diluc is now, Kaeya shoving into that velvety heat until Diluc is delirious.
"B-Bite me Kaeya, please-" After Diluc whimpers this request, he's overwhelmed with that desperation, and Kaeya licks on Diluc's neck before replying.
"Touch yourself, let me see my how desperate my Omega is for me to claim him again."
There's no hesitation in how Diluc obeys, reaching down to start stroking over his own cock that's soaked to the touch. Seeing this ignites that very primal instinct in Kaeya, and he's muttering more praises before biting down hard on Diluc's neck.
The second Diluc feels that bite, he's crying out, not even caring if anyone hears them, his broken moans louder than the harsh sounds of Kaeya fucking into his soaked hole. Cum smears over his hand and between them as he shakily strokes more over his cock, whining Kaeya's name when the feel of his knot swelling reignites that desperation.
Kaeya groans at the sight and feel of how Diluc breaks apart, giving a few more quick thrusts before he's shoved deep inside, his cock throbbing to have hot cum throbbing and filling Diluc in the way he can't help but crave.
It's gratifying how Kaeya kisses on the mark in the moments that follow, making sure Diluc is filled up with all of his cum, and they remain interlocked in that position for quite a while.
Diluc plays with Kaeya's hair, kissing along his cheek until their lips meet again in slow, gentle kisses.
"You'll have to help me clean up." As Diluc says this with a content smile, Kaeya is smiling in return.
"I suppose it's good thing I have a secretary that can fetch us some things then, hm?"
Blue eyes shimmer with mirth knowing that the suggestion alone with have Diluc flustered, which it does.
It only will solidify even more though that Kaeya is his, so Diluc is more than pleased with the suggestion.
"I'll make you dinner tonight with the new recipe I got."
Hearing this has Kaeya humming and kissing Diluc again a little more intensely given their earlier conversation of how Diluc got this recipe.
"I hope that includes you for dessert."
"I'm yours whenever you want me." Diluc says this fondly while blushing.
"Don't tempt me again so soon or neither of us are leaving this room today."