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The Naughty List

Summary:

Kaeya is dressed-up as 'Saint Yule' (Mondstadt's discount Santa) for the Yuletide Festival party the Knights arranged in Angel's Share, aaaand that's where all the light-heartedness stops.

Diluc was on the naughty list and Kaeya had to punish him. He didn't know that the night would take to a different route than he had planned.

.

“And whose fault do you think is that?” Diluc curled his lips, glaring defensively.

“Your libido?” Kaeya guessed, blinking innocently.

Notes:

Hi hi, merry (belated) Christmas!

I know I'm late, and it's closer to NY than Christmas but WELP, HERE COMES THE CHRISTMAS SEX FIC ANYWAYS! TAKE IT *throws it at readers*

But since it is late, I decided to use Yuletide Festival instead, which goes on from Dec 21 to Jan 1, afaik.

Oh, who cares, it's free smut! Enjoy! xDD

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

Work Text:

“Happy Yuletide!”

Cheers echoed throughout Angel’s Share, mugs and pints of ciders and booze raised up in celebration by young and old alike. The tavern was decorated with the spirit of the festivities in mind—pretty glowing lanterns placed along the corners of the floor and garlands decorated with colorful Electro lights hung throughout the walls, railings, bar counter, and even the wine and glass shelves behind the bar. At one corner of the tavern, right next to the entrance, a medium-sized fir tree stood proud, enveloped by glittering garlands, glass baubles, more Electro lights, and a snow angel at the very top.

The tavern was filled with warmth, the atmosphere cozy and festive despite being nearly over-crowded, a welcome change from the howling wind and thick snow right outside.

The Knights of Favonius Acting Grand Master along with her usual circle all crowded around a large table specifically requested for the night, while the rest of the knights scattered all across the tavern, even up to the second floor.

Jean smiled at the sight of Lisa trying to coax the Honorary Knight into drinking ‘just a teeny tiny sip’ of dandelion wine, which made Aether ever so slowly scoot away with his hands up and a troubled smile on his face. His little companion was yapping something to Lisa with a scowl, pulling her away from bothering the young man by tugging on her hair—she was distracted by the sight of a sticky honey roast put on the table by Noelle, along with several other dishes by the servers.

Master Diluc was generous enough to have his staff from Dawn Winery to come and prepare the food and beverages for the occasion, and the tavern was already furtively decorated by the time the knight’s group arrived. The nobleman himself seemed to be content to watch the celebration from the side, choosing instead to man the bar area, away from the crowd, and have his staff deliver the drinks and dishes as needed.

Albedo was home, for a change, being tended by Sucrose by the edge of their table. He seemed to be focused on a piece of parchment and a thick tome, uncaring of the loudness of the room while his assistant tried to coax him to eat something before they turn cold.

“Where is big brother Kaeya?” Klee’s adorable voice came from a few seats beside her, and Jean turned. The little girl was seated on her sister’s lap, while Amber was beside them, trying to make the pouting girl cheer up. Barbara threw a questioning look at Jean as if saying ‘how much longer?’ to which the Dandelion Knight could only shrug.

Just before Klee threw an actual tantrum, wanting her big brother Kaeya to come and play with her, the backdoor of the tavern was slammed open, revealing—

“Ho, ho, ho! Happy Yuletide, my dear, sweet little birds!”

There in all his glory was,

“Saint Yule!” Klee screamed, jumping from Barbara’s lap and dashing straight to the arms of the green-decked fellow standing by the backdoor. More cheers erupted in the tavern, whistles and cat-calls echoed at the sight of ‘Saint Yule finally entering the floor.

To most of the occupants, behind the thick green woolen robe and cape, the floppy wide-brimmed hat and gloves, all trimmed with fluffy white fur, and the fake white beard, the distinctive feature of a certain Cavalry Captain Kaeya Alberich was unmistakable.

But to Klee, and surprisingly Amber—and not so surprisingly, Paimon—all they could see was the distinct attributes of a certain mythical old man who came once a year every Yule season bearing gifts to good-behaving children—made obvious with the ridiculously large green sack he carried over his shoulder, filled with presents by the knights for the secret gift exchange they planned beforehand.

Klee immediately forgot about wanting her ‘big brother Kaeya’, her bright-eyed look as she stared at the large sack obvious, and Kaeya let out a rumbling laugh—his throat was going to be sore imitating a nonexistent mythical old man, but seeing how happy it made the little girl, he told himself that it was worth it.

“Now, now, Klee,” he said, patting the little girl’s head, “a good girl should be patient!”

The blonde little girl looked at him with her wide, adorable eyes and nodded excitedly, following him to a chair that had been placed by the bar counter for him to sit on, and climbed onto his lap.

“Are you okay, Saint Yule?” Klee asked in worry when she saw the magical old man winced his eye—which she found weird; she didn’t know that Saint Yule only had one eye!

The costumed knight smiled as best as he could through the long, itchy beard, “yes I am, little Klee. Now, who’s ready for presents?”


Kaeya let out a loud sigh after the last of the knights had left, slumping against the bar with his cheek pressed on the wooden counter, half-ripping the itchy fake beard from his now tender facial skin.

After he had given all the secret gift exchange, Klee and her two childish companions—Amber and Paimon, the damned emergency food—were relentlessly crowding him and asking him for stories about his ‘adventures’ in the cold, cold Northern Pole, making him unable to escape and come back as Kaeya—which meant not even a single drop of alcohol entered his mouth in the supposed party.

“That was torture,” he complained, lazily raising a hand to the bartender, “dandelion wine, if you please. By the bottle.”

“A bottle?” Diluc raised an eyebrow, taking note of the exhausted captain currently nearly dozing on his counter. His staff was just done cleaning up the tavern from scattered wrapping papers, dirty dishes, and spilled food all over the tables and floors, their work efficient. He decided to leave the decorations for now, at least until Yuletide was officially over within the week.

“We’re closing,” he said matter-of-factly with his arms crossed, gesturing to the staff who were waiting for him outside by the open exit, the carriages already set for the trek to Dawn Winery.

“Wha-at,” Kaeya whined, “but it’s not even midnight yet!”

“Since the tavern was booked for the ordo’s party tonight, there will be no customers coming. And since the party is now over, I see no reason in staying here any longer.”

“Stingy,” the younger man muttered under his breath, exerting whatever was left of his stamina to stand up and pout at the redhead. Diluc chose to ignore the half-hearted glare to finish up his own cleaning behind the bar, putting back glasses and pints that were already cleaned, and after one final sweep over the counter to see if he missed any spot, he nodded to himself and got ready to leave, completely ignoring the fuming Kaeya.

And how Kaeya hated to be ignored.

“You haven’t even gotten your present yet~” the bluenette sing-songed, trying to keep the other from leaving just yet—and partly not wanting to trudge down his apartment alone in such horrible weather, let alone in the stupid outfit he was in. And partly because...

“Don’t need it,” the Pyro user scoffed, donning back his black coat and brushing his hair out from the collar. Kaeya wasn’t discouraged, however, as he sauntered behind the bar, making Diluc eye him up suspiciously. Kaeya obviously forgot that whatever seductive charm he had was severely reduced with the silly costume he had on, which only made the usually tantalizing smirk on his pretty face become somewhat of a hilarity instead.

The cavalry captain-turned-‘Saint Yule’ tried his best to ignore the puff of amused breath Diluc let out, and crowded the redhead against the shelves instead. He would not be laughing after he knew—

“Are you sure?” the Cryo user said breathily, grabbing one of Diluc’s warm hands, even through his thin leather gloves. And as the redhead chose to humor the younger for a bit and let him do that, Kaeya slipped his hand inside the slit of the green woolen robe he was wearing and Diluc’s eyes widened in realization at what his hand found under the costume.

“You...” he whispered in disbelief. The smug captain’s smirk widened, letting the pale hand under his robe fondle around his chest before he stepped away, reveling in how disappointed the other looked, torn away from the object of his desire.

“That’s right,” Kaeya said smugly, “the whole ensemble.”

Diluc swallowed, eyes suddenly glazed with lust and his body wanting and Kaeya would gloat if he was any pettier—in the end, he always won.

“You wouldn’t want to miss unwrapping this present, would you, Master Diluc?” he purred, running his hand over his clothed chest, and another down his waist to his thigh, looking at Diluc with his large, silvery lilac eye. And Diluc, now knowing what exactly was hiding under Kaeya’s costume, couldn’t find it in himself to be amused anymore.

So obviously he had to take his present home, right? Preferably his bed, but any even surface was fine, really.


The ride back to the winery was agonizing.

One, Kaeya was still clothed in the ridiculous costume, insisting that it was warmer, and he had no change of clothes—making an excuse that he 'forgot' to bring it from the back room of the tavern where he was getting ready with his costume. 

Two, he also insisted to be in the same carriage as Diluc, away from the other staff, because Diluc’s carriage was much warmer—Pyro user emanated extreme body heat in cold temperature, was his other excuse.

Three, Kaeya had opted to repurpose one of Diluc’s hands as his personal portable heater, now free of its glove for maximum heat transference.

Four, said portable heater was now being used to warm his cold belly, under the green robe—and he could clearly feel each fine grooves and linings of the lacy thing wrapped around the tan knight’s slim waist.

Five, Diluc was having a rather big problem inside his pants, and they were still at least half an hour away to their destination—and he would not resort to doing the unspeakable in a carriage.

At least, that was his thinning resolve talking.

Kaeya, for all his complaints about the cold, was secretly enjoying it all. Toying with Diluc’s high libido was amusing enough, but pushing the buttons of his self-restraint? A whole different world of fun.

“I know what you’re doing, Sir Kaeya,” Diluc grounded out, at last, trying to snatch his unwilling hand away from the delectably smooth belly, “it’s disgraceful.”

“Oh?” Kaeya struggled to contain an undignified snort. Already resorting to petty jibes to conceal his arousal, I see

“I’m not the one who literally hauled another person into a carriage because they got horny.”

He mentally cheered when he saw red tinging the nobleman’s cheeks. “And whose fault do you think is that?” Diluc curled his lips, glaring defensively.

“Your libido?” Kaeya guessed, blinking innocently.

The redhead’s scandalized look was to die for, and before he could finish his sputtered-out response, the coachman knocked on the wooden carriage wall, telling them they were approaching the winery’s gates.

They stopped soon after that, and Kaeya dragged Diluc out, pulling him along quickly because he couldn’t stand the cold wind—so close to Dragonspsine as they were, the winery was one of the coldest areas in Mondstadt.

“Elzer, my good man, happy Yuletide!” Kaeya greeted cheerily at the butler, who looked like he was already expecting them. Kaeya continued as he dragged along Diluc to the stairs, “tell Adelinde and her maids to not disturb the master bedroom until morning, will you? Especially those two.” He gave Elzer a pointed look, to which the older man replied with an ‘understood, master Kaeya.’

Diluc felt betrayed, somewhat. He gave Elzer a disappointed look and a headshake, but the white-haired fellow only shrugged at him with a ‘have fun’ and an infuriating leer.

Damn that bastard.

Of course Diluc was going to have fun.


He was all over Kaeya the moment the clicking sound of the master bedroom’s door lock was heard. Lips devouring lips as greedily as pale hands—both now rid of their leather confinements—roaming over Kaeya’s thick costume, already tugging at the hem of the robe, searching for the buttons to discard it and reveal his present.

“Woah there,” Kaeya pulled away from Diluc’s chasing lips and preying fingers, earning himself a heated glare, to which he only chuckled.

“You said you were my present,” Diluc said, his tone nearly bordering on a petulant whine as he crossed his arms, only barely able to restraint himself from actually stomping his foot.

“I said that?” Kaeya wondered aloud, blinking one innocent eye.

“You did.”

“Well, I guess I change my mind,” Kaeya gave him a toothy grin, and then pursed his lips boyishly, “because you have been a very, very naughty boy, master Diluc.”

“And naughty boys,” he strode, now predatorial as he backed Diluc to the bed until the redhead’s knees touched the edge and were forced to sit down, now looking up at the looming captain. Kaeya’s smile was chillingly sensual and full of dark promises, taking Diluc’s chin in his dainty fingers and making him look up to his starry eye, “naughty boys need to be punished.”

Diluc swallowed whatever small amount of moisture was left in his dry mouth, overactive imagination already concocting varying ‘punishments’ Kaeya had in mind—delicious ones.

Kaeya suppressed an amused laugh at the drool threatening to fall down from the corner of the elder’s lips, knowing what the redhead was thinking. Honestly, the people in Mondstadt didn’t know how much of a closeted pervert their beloved uncrowned king and Darknight Hero actually was. And they said Kaeya was the shameless nympho. Well.

“And how do you plan to punish me, St. Yule?” Diluc croaked, playing along with whatever scene Kaeya had in mind. His pants had been getting tighter and tighter for a while now, and he wished the other would hurry along and get the initial release out of the window first before they do anything lengthier that night.

Kaeya, perceptive as ever, though for all the wrong reasons, noticed his straining erection and huffed. “Not much of a punishment of you’re enjoying it, is it, master Diluc?” he raised a brow and kneed the bulge absently, making Diluc grunt.

“All right. Strip.”

The commanding tone sent shivers down Diluc’s spine like no other—Kaeya was never so assertive during sex, let alone ordering him around. Usually it was him who did it, or most of the time, he simply took what he pleased, making the younger gasp and scream his name into the morning.

He obeyed before he even realized it, movements jerky under the cold stare Kaeya was giving him—in spite of the silly outfit. He really, really wanted that costume gone.

“Everything, master Diluc,” the tone Kaeya used now was impatient—all part of the play—and Diluc obeyed, until he was fully and completely nude like the day he was born. Kaeya reached behind his head, to his surprise, and untied his flaming mane until they flowed free. “I said everything.”

“Sorry,” Diluc said quickly, and his eyes widened after he realized it.

Kaeya was thrilled, Diluc seemed to be getting into the play more than he anticipated. He didn’t show it of course, and instead issued the next command, “get in the middle of the bed, against the headboard.”

Again, Diluc complied silently, scooting further into the gigantic bed—and found something interesting already set up by the headboard.

Handcuffs.

Only then did he finally take in his surrounding—the alterations made in his bedroom. There were warm, glowing lanterns filled with Electro crystals strewn about every corner of the room, complementing the cool light from the bright moon outside his large windows.

His bed, instead of its usual dull beige, was now the purest of white, making his blazing red hair stand out, and his pale skin just a little warmer, added with the warm lights from the lantern. He looked at Kaeya when the bed dipped, and—

Click.

Oh.

He didn’t know there were another set of cuffs under there too.

“So that you won’t thrash about,” Kaeya explained with a little dark smile, securing the other iron cuff around his other ankle. There were chains attached to the posts, giving him a little room to move his legs, but not much else.

Kaeya crawled atop the bed, his ridiculous wide-brimmed hat, thick gloves, and boots gone, leaving his appendages bare. It felt more erotic, somewhat; the barest hint of skin showing through seemed more sensual, even with the large robe still on. And distracted as he was with the show of ankles under the wide hem of the robe, he only belatedly realized that his hands were already secured to either side of the headboard, leaving him spread-eagled on the bed.

“Going all out, are we?” he commented, tugging at the bounds lightly to test it, and found it pretty secure. He wouldn’t be getting out of these easily.

“You are being punished, master Diluc,” Kaeya slapped his cheek lightly, making him snarl at the condescending action. But before he could say anything back, the costumed captain grabbed at his jaw and forcibly tilted his head up, making him look at Kaeya’s shadowed face, “punishments aren’t supposed to be pleasant.”

The dark smile he gave Diluc was too damn sexy, and Diluc’s erection jerked against empty air pitifully, begging for friction—anything.

Kaeya shifted down so he was straddling Diluc’s thighs, studying the straining erection, already so red and big and he couldn’t help but lick his lips at the thought of how hard it must have already been.

“Your little junior is so proud, standing upright like this” he teased, fingers barely ghosting over the tip, making Diluc suck in a sharp breath, “we can’t have it go off too soon, can we?”

The redhead felt something cold and snug slipped around his shaft and just as he suspected—a cock ring.

“Perfect fit!” Kaeya cheered to himself, grinning cheekily, “I guess I know your cock better than I thought.”

“You’ve had countless experiences with it, after all,” Diluc said dryly, feeling the constriction around the base of his shaft alien. They never used toys before. Usually, either one of them would preposition the other and they would go straight into sex without even much foreplay.

Sure, Kaeya liked a little spice here and there, loving to fill his mouth with Diluc or have him finger the bluenette until he was begging for a hard fuck—and Diluc had his fair share of kinks, from hair pulling, leaving deep marks on Kaeya’s skin with his hands and teeth, to eating him out until Kaeya was reduced to nothing but a bumbling mess of pleasure. But they never really ventured out to the more elaborate plays and using tools like this.

This ought to be an interesting night—just as long as he got to fuck the younger, he really had no complaints.

“Well, it’s all thanks to you and your,” Kaeya paused, tapping at his leaking tip, “generous libido.”

The redhead hissed when Kaeya dragged his long nail from the base of his member to rest on his slit. Kaeya chuckled darkly, a promise of what was about to come.

“Let us begin your punishment, shall we?”

Another shiver ran down Diluc’s back.


Oh this...

This was horrible.

He couldn’t even muffle his whines and moans anymore, and at one point, almost sobbed out a plea for Kaeya to stop.

The Cryo user had his perpetual amused smirk on, his tongue out to the side on glee, watching his tan hand working up and down Diluc’s steadily darkening dick, slick with lubricants and his own precome.

This had been going on for at least half an hour.

“Kaeya, ah,” he gritted his teeth, throwing his head back at a particularly harsh twist up his crown, growling out, “fuck, let me come already!”

“Hmm, “Kaeya pretended to think about it, razor-focused eyes watching his messy hand still rapidly jerking Diluc’s throbbing erection, “no.”

Diluc wanted to cry—his cock was so hard that he thought it was going to fall off the ring gripping at his root mercilessly. And Kaeya added his other hand now, palming at his crown, polishing it until he thrashed what he could of his body, keening aloud.

It was supposed to be Kaeya who was screaming and crying right now, not him!

For his part, Kaeya was positively delighted. Diluc’s moans and cries were like music to his ears, a very welcome turnabout from their usual dynamic. He understood now why Diluc liked hearing him cry so much—the power he felt over the redhead at his mercy was simply exhilarating.

He hadn’t even shown Diluc his ‘present’ yet, still securely wrapped under his St. Yule outfit.

“Maybe if you beg, I will consider it,” Kaeya offered cheerfully, the little shit that he was, and Diluc growled in frustration.

Diluc Ragnvindr doesn’t beg for anything.

“Please,” he found himself saying, all sense of pride and shame thrown out the window as he thrust his hips up against Kaeya’s merciless hands, “please, fuck, Kaeya... Kaeya let me come.”

Master Kaeya.”

Please master Kaeya, please let me come,” the redhead grounded out, lips snarling and eyes that of a beast despite his pleading words. Right now, all he wanted to do was break free of his bondage and shove the younger down the sheets, wrecking him until he screamed so loudly, he wouldn’t be able to stand nor speak for weeks.

Instead, all he could do was tightened his fists until his palms bled, watching Kaeya watching him struggle.

“I really like the sound of that,” the bluenette whistled, taking his hands off Diluc’s cock and the redhead almost sighed in relief, thinking that Kaeya would finally take off the ring.

Of course he didn’t. That little, lying minx.

Instead of freeing Diluc’s tortured junior, Kaeya sat back, scooting away from Diluc until he was straddling Diluc’s calves and then stood on his knees. At least his dick and balls were given a reprieve, for now. But that didn’t make his hard-on any less painful.

“You said you’ll let me come if I beg!” he protested.

“Oh master Diluc, stop putting words in my mouth,” Kaeya tutted, “I said I will ‘consider’ it.”

“Oh fuck you—

His throat dried out mid-curse, eyeing the other man fingering the buttons of his robe.

His ‘present’. This was the worst timing ever, and even more so, because Kaeya had been planning for it.

“Don’t you want to see?” Kaeya licked at his soaked palm, his other hand popping the very top buttons of his robe slowly. He didn’t even need to ask, Diluc’s eyes were practically glued to each loosened button, hypnotized.

By the time the last one by the hem of his robe was unbuttoned, the entire thing fell away, revealing his entire middle, from top to thighs, before he shrugged the material off his fine shoulders.

And oh, how gloriously breathtaking Kaeya was.

The lace lingerie looked as if it was melded into one with his skin, thin and delicate as it was. The brassiere hugged his plump breasts, big for a man, yet looking perfectly at home around Kaeya’s full chest. The thong left the sweet curve of his arousal visible, delicately laced on either side of Kaeya’s hips. And right above it was the garter belt that completed the ensemble, straps pulled down his shapely thighs that were covered with sheer stockings, secured by pretty garters with frilly laces.

And it was all blazing, fiery red.

As red as Diluc’s eyes, and his hair, and his vision—as if screaming that Kaeya was Diluc’s.

Something akin to pride bloomed in his chest, and the urge to claim and mate his beautiful lover was getting more and more unbearable.

“Do you like it?” Kaeya asked, almost shy, trailing his fingers down his bra, squeezing his arms together so his chest stood out more.

“I love it,” Diluc breathed, “and this is torture.”

The Cryo user smiled.

“Exactly the point.”


His neck was being attacked by the hungry kitten, licked and nipped and sucked until dark reds blossomed on his pale skin. He could feel the lace of Kaeya’s lingerie dragging against his own chest, the bluenette practically flushed against him, sitting on his lap with his thighs on either side of Diluc’s hips.

Kaeya could keep this up forever, he knew. Despite their almost equal level of horniness, Kaeya’s libido was much more tamed than Diluc—content in pleasing and toying with his partner’s body to get the reactions he wanted, rather than actively seeking his own pleasure.

The Cryo user moaned against Diluc’s collarbone, shaking his hips, knowing the heavy thing resting on the cleft of his ass was pitifully begging for release. His own shaft strained against the lacy panties, and he rubbed himself against Diluc’s hard body like a cat in heat.

Right now, Kaeya seemed satisfied in simply playing and exploring Diluc’s body, reveling in his strained grunts and moans, in capturing Diluc’s lips over and over again until both their lips were red and swollen.

He peppered kisses and bites down Diluc’s chest, paying attention to his nipples, flicking them with his fingers, and biting each one until Diluc hissed. How he wanted to be the one who did it to Kaeya’s delectable chest. To have it all wrapped up in the beautiful brasserie, only to be unable to do anything but watch—it was punishing indeed.

The next thing he knew, Kaeya’s lips were hovering over his member, and he waited with bated breath for what was about to come.

“This doesn’t look too good,” the cavalry captain murmured, tracing a finger along the crown, “is it really that painful, master Diluc?” he peered up with his large, starry eye, looking deceptively innocent even with his mouth so close to Diluc’s filthy desire, dressed in such a salacious fashion.

“It is,” he groaned when a slender tongue poked out of pouty lips to dip into his welling slit, making him shudder, “so take that damned ring off.”

Instead of answering, Kaeya mouthed his crown, suckling around his glans until Diluc’s eyes rolled to the back of his head, gasping out a choked cry with the blinding pleasure.

He thought he passed out.

And Kaeya was just loving his reaction.

So without warning, the younger of the two braced his hands on Diluc’s hips, making sure he wouldn’t thrash about and choked him, and proceeded to go down the large, throbbing organ with practiced ease.

He tightened his hold when the redhead instinctively tried to buck into his mouth, closing his eye and hummed around the girth, already halfway down his throat. Despite his lack of gag-reflex, Diluc’s size was still quite difficult to fit into his mouth with its entirety, since his throat wasn’t as yielding as his ass. So instead of forcing in more, he worked with what he had, hoping Diluc would cooperate so he could use his hands to work on the rest of his unnecessarily large penis.

Popping off the erection when Diluc bucked again, Kaeya glared, “stop struggling!”

“This is your doing!” Diluc retaliated in frustration, nearly sobbing at the pleasure that was slowly turning into pain. “Just please, please please let me come, please! Fuck, I’m begging here!”

Kaeya groused. He had planned for everything to the last, minute detail, darn it. He had expected Diluc to be a sobbing mess, a puddle of pleasure, and to enjoy it. But seeing the redhead now, literally crying for release, he felt himself deflating instead.

“Ugh, fine,” he huffed, unable to take Diluc’s puppy dog teary eyes anymore. He pulled at the ring, now very tight around the base of Diluc’s purpling hard-on, and just as he had it past the thickest part of the stalk—

Diluc gritted his teeth and unconsciously shut his eyes tightly as the most powerful orgasm tore through him, feeling like he had a heart attack as his hips jerked uncontrollably, keening when the flow of semen seemed to not be able to stop forcefully pumping out of his shaft. He didn’t notice it at first but somehow, the cuffs around his wrists and ankles broke apart, and his arms slackened down to his sides uselessly.

When he opened his eyes again, his entire body had melted against the sheets, unable to move even a single finger and Kaeya was...

Kaeya was covered in his seed, and a single lilac-azure eye wide in shock, still as a statue.

The thick white liquid dribbled down his nose and his slightly parted lips, dripping down his chin. Most of them landed on his chest and thighs, soaking his lingerie in the near-opaque liquid.

And damned if Diluc didn’t’ feel his cock twitch again at the stunning sight.

“Are you,” he asked tentatively, clearing his sore throat, “are you okay? ...Kaeya?”

The bluenette seemed to snap out of whatever shock was in his system and stared down at Diluc’s sheepish face. He blinked, wiping at the come sticking to his face and looking at his hand as if he was staring at a piece of alien substance.

“Wow,” was all he could say.

It was Diluc’s turn to gawk. “You’re not... angry?”

Kaeya fixed him an unreadable expression before smiling.

“Because you just came all over the new, expensive lingerie I splurged on just for tonight?” Kaeya asked in an overly sweet tone, “not at all.”

He was definitely angry.

Diluc was always known as the short-tempered one of the two, the scary, grumpy noble that people either stayed away from or admire from afar, that one person whose resting face could make babies cry. While Kaeya was the pleasant one, the friendly one who seemed to lack the ability to get angry at anything, always laughing and brushing things off like they were rain rolling down his back.

Oh, they didn’t know just how much scarier he could get when he was actually ticked off. Kaeya’s anger wasn’t explosive like Diluc’s, no. It was quiet and deceptively calm, hidden away in his smile, promising severe and possibly life-damaging retribution.

The last man who angered him disappeared off the face of the earth without anyone noticing until it was too late—and no one knew it was Kaeya at all.

So Diluc, now faced with the death god’s smile his Kaeya was giving him, felt dread run up and down his body.

“I’ll b-buy you a new one,” he tried, stammering, “anything you want.”

The bluenette begrudgingly perked at that. “Anything?”

He was eyeing on several sets of lingerie and outfits that were sadly out of his current budget.


He mourned the loss of the beautiful lingerie when Kaeya stepped out of the bathroom freshly cleaned, but immediately forgot about it when he realized the knight was wearing Diluc’s shirt. 

And he looked a hundred times better than Diluc wearing it.

It was his plain black, long-sleeved shirt he always wore under his white vest, but on Kaeya, with nothing else on him, it showed off his beautiful long legs and falling down one of his shoulders—it was too wide on him, despite the perfectly fitting length, and the way had the first few buttons loose didn’t help.  

Diluc was always the bulkier one of the two, underneath the many layers of his dark clothing that hid his musculature. Having trained with large claymores since his early teenage years, His shoulders and arms naturally grew broader and larger, although still maintaining his lean form.

Kaeya, on the other hand, had an athletic dancer body. He was all fine, elegant lines and toned muscles, supporting his quick and fluid fighting style—as if he was dancing with his sword. Despite his slender frame, however, his pectorals were layered with soft fat, making them look plump which made it heavenly for Diluc to sink his hands—or his face—on them and...

“Your cock is really excitable isn’t it,” the knight drawled, sitting on the edge of the bed, fixing him a withering look.

Diluc shrugged, absently massaging his now-free wrists. Kaeya noticed this and sighed, taking both of Diluc’s hands in his, his vision surfacing the barest bit to his cooling skin, soothing Diluc’s raw wrists.

They were noticeably bigger than his own, roughen with countless scars and bulging with what he thought were unsightly veins—wielding those ludicrously heavy weapons would do that to someone who insisted on wielding them one-handed most of the time. Compared to Diluc’s, Kaeya’s hands were more elegant, long and slim, his nails trimmed and manicured to perfection.

The difference was arousing to him. He knew how easily Diluc could manhandle him, throwing him around like he weighted nothing—especially when they had sex. The last time Diluc held him up around him as he thrust his cock into Kaeya while standing straight, he had come without much stimulation in record time. The redhead knew this and made sure to display his impressive strength whenever they were together to tease Kaeya’s horny thoughts.

“The cuffs were designed to break in response to Pyro,” Kaeya murmured, massaging Diluc’s wrists with his thumbs, making the redhead sigh at the pleasant cooling sensation, “you must’ve accidentally used your vision when, well, when you decided to explode all over me.”

Diluc flushed at the dry words, looking at anywhere but Kaeya.

“You expected them to break?”

“Well of course,” Kaeya rolled his eyes, “the goal was to make you lose control.”

“What if I accidentally burn down the mansion, hm?”

Kaeya gave him a lopsided smirk and straddled his hips again, “will you?”

The Pyro user gulped. His hands and feet were free. Kaeya was wearing nothing under the oversized shirt. He could literally bend the bluenette over and simply rail him like this.

He placed his hands on the other’s hips, bringing him down until their lips were mere inches apart, “you know I won’t,” before capturing Kaeya’s soft lips in his own. The younger snaked his arms around Diluc’s neck, wounding his fingers on his red locks just as Diluc palmed at his bare bottom greedily—and then his fingers bumped at something hard.

Kaeya pulled away from him, offering a playful look before swinging his legs around, turning his back to Diluc.

Barbatos have mercy.

Kaeya was wearing a plug.

“Since when?” he whispered wide-eyed, leaning forward to spread those sinful cheeks apart. The plug was as red as his previous ensemble, shiny like a smooth rock and warm to the touch.

“The party—ngh,” Kaeya moaned, twitching when Diluc tinkered with the toy that had been nestling inside him for hours.

The revelation made Diluc’s own erection jump. So all this time, in the party, as he was handing over presents to the knights—to Klee, who had been sitting on his lap the entire time—he had the obscene thing inside him.

“Seems like I’m not the only one on the naughty list,” Diluc muttered under his breath, and then suddenly pulled up at Kaeya’s ass, making him lose balance and fell to his elbows. Before Kaeya could manage to turn around and admonish him, the redhead unceremoniously pulled the plug off—it was bigger than he anticipated—earning himself a loud cry that sounded suspiciously like his name.

“Di—luc!” Kaeya bit into his arm when the elder shoved his thick fingers inside him, cruelly digging around, testing the stretch of his hole.

“It’s time for you to receive your punishment, Sir Kaeya,” the threat was whispered to his hot ear before his lobe was bitten. Kaeya shrunk, burying his face into his folded arms when skillful fingers found his sensitive bundle of nerves almost immediately, muffling his loud moans.

How the tables have turned.

The Darknight Hero finger-fucked him mercilessly, despite his hole being more than ready to receive his member inside. And worse, he made his other hand busy too, by slapping on his asscheeks harshly, leaving them red and sore, and him choking on his tears.

“P-please,” Kaeya whined, trying to wiggle away from Diluc’s cruel hands after he was spanked again, “No more—!”

The Pyro user lifted one of Kaeya’s thighs, making the other lie on his side, granting Diluc a view of his sweet Kaeya’s crying face. Kaeya was so pretty like this, he couldn’t help but bully him more.

“I should punish you as long as you did me, it’s only fair,” Diluc tried, jabbing particularly hard against the small bump inside the soft hole.

“No~!” the bluenette protested, looking at Diluc teary-eyed, “I’m sorry—anh, forgive me, master!”

Fuck, he’s good.

He let go of Kaeya’s thigh, lined his dick at the twitching, swollen hole, and pushed in.

A punched-out moan was forcefully torn from Kaeya’s throat, and before he could take a breath, Diluc grabbed him by both elbows, making him arch his back and the redhead’s cock pushed even deeper inside him.

The nobleman’s thrusts were fast and hard, slamming against his prostate with deathly precision. Kaeya could do nothing but take the brutal fucking, tethering on the large organ drilling inside him, unable to muffle his screams and cries.

“Look at you, the great Captain Kaeya Alberich,” Diluc punched every word in, his voice raw and heavy, “reduced to a nobleman’s cockslut. Then again, this is what you are made for, isn’t it?”

Kaeya couldn’t respond, his words lost in the haze of pleasure.

“Can’t even speak when there’s a cock in here, can you?” the redhead goaded, grinding his hips against Kaeya’s quivering butt.

Kaeya would hate to admit that Diluc was right. But the only cock that could reduce him to such a hot, wanton mess belonged only to the redhead—which he wouldn’t admit as well if he wasn’t drowning in an overload of sensations.

Diluc flipped him over so that he was on his back and pulled out until only the tip was pressed against his hole.

Kaeya whined at the lost, feeling empty without something big to fill him up. “Put it in!” he demanded, his spoiled nature showing through, wriggling his hips so the head of Diluc’s member would slip in.

“Only if you beg prettily for me,” Diluc smiled, halting the other’s movements and caressing one soft thigh with his hand.  

“Please fuck me,” the bluenette said in a petulant manner, which only made Diluc laugh.

“Try harder, princess,” he shot back, teasing the younger by circling the quivering hole with his tip, reveling in how greedy it was for him, trying to suck him back in.

Kaeya let out a frustrated noise, biting his lips. Honey-glazed hands grabbed at the back of his own knees, spreading his legs obscenely wide as he looked at Diluc through his long lashes.

“Please, master Diluc, please fuck Kaeya’s needy hole with your big cock until Kaeya screams,” he begged sweetly, the words coming out of him with natural ease, knowing just what to say to please the young master.

And pleased Diluc was. Wounding his arm around the knight’s slim waist, he pulled him to an upright position as he himself laid back down to the pillows that elevated his upper body.

“How about you do it yourself?” he said playfully.

The knight heaved, knowing he had to comply or Diluc wouldn’t be giving what he wanted at all. With one hand he spread his ass, while the other positioned Diluc’s throbbing erection on his wet entrance. Biting the inside of his cheek, Kaeya inserted the tip slowly, easing the sizeable organ into his accepting opening until his butt was pressed flush against Diluc’s hips.

In this position, he really could feel how heavy and big Diluc felt inside him, and he had to stop for a few moments to adjust to the stretch. Being fucked and fucking himself on the other’s member was two very different things.

Diluc was impatient, however, and rolled his hips, making the organ inside Kaeya graze against his sweet spot.

“Just wait for a second!” the younger hissed, bracing his hands on Diluc’s lower abs.

“You’re taking too long,” Diluc complained, “is it too much for you?”

Kaeya glared at the challenging words, lifting himself up and slamming down, squeezing his hole all the while. He had a triumphant smirk on his lips when Diluc choked on a gasp and began fucking himself on the hard rod like it was his sex toy.

His pace was slow and languid, much too mild for Diluc’s preference, but he held himself back from simply fucking up into the honeyed knight’s pretty body, and instead tried to enjoy the view he was given. Kaeya was bouncing on him like a rabbit, the black shirt he was wearing slipping off his shoulders even more, the buttons all but came loose to the middle of his belly.

The knight gritted his teeth, trying to bounce faster but his legs were turning numb on Diluc’s sides, and his motion became increasingly stuttered.

“Fuck me!” he finally wailed in frustration, grinding down on Diluc’s cock with tears in his eyes.

“I guess we have no choice,” Diluc sighed, an act really, before he gripped at Kaeya’s waist and began to fuck into Kaeya’s pliant body in earnest. The knight cried out, Diluc fucking him better than he ever could, and slumped down on the redhead’s chest, letting his body be used. He contented himself with rubbing his own weeping, ignored cock against the other’s hard stomach, hips shaking and ass bouncing with the force of Diluc’s thrusts.

The nobleman pulled at his hair, making him tilt his head up, and then devoured his mouth, tongue exploring and claiming every corner. Kaeya could do nothing but surrender, both his mouth and ass plundered by Diluc’s possessiveness.

Diluc let his beast loose—the sensation of Kaeya’s tight walls around him and his sweet-scented body pressed flush against him, his soft breasts squished against his own, and his pliant mouth that surrendered so beautifully to his domination, all made him edge closer to his climax.

Kaeya shuddered on top of him, moaning brokenly and Diluc felt cool fluid seeping from the fabric of his shirt and onto his stomach, letting him know that Kaeya just came.

“Your body is so lewd, Kaeya,” he whispered to the shuddering knight, “it’s so fucking erotic. Can you hold on for me? Can you come again, just like this?”

Kaeya only sobbed, his hands hugging around Diluc’s head as the overstimulation overtook him. Being merciful, he lifted the honey-glazed, soft caramel beauty from his cock and manhandled him once again, so that Kaeya’s back was turned to his chest instead, releasing his trapped cock from between their skins.  

He hooked his arms under the back of Kaeya’s knees, just like what the bluenette did when he begged to be fucked before, and like this, he plunged back in to chase his own climax.

“Ple—master, ah ah—ohh, master Di—aanhh~!” the bluenette babbled incoherently, not knowing his own words, his brain turning to mush from the pleasure that turned his entire muscles into jelly.

“I’m close Kaeya,” Diluc grunted, snarling like an animal, and bit into the offered neck before him like one too. His movements grew more and more erratic as he approached the edge, his hips slamming so harshly against flawless, milk chocolate skin, and his hands gripping at those hips so strongly that he was sure the knight would be all covered in bruises come morning.

The thought only made him grew more feral, abusing Kaeya’s hole with wild abandon. He felt the knight tightening around him and heard him let out the sweetest wail as he arched his back off Diluc’s body. The redhead felt around the other’s stomach, only to find no traces of cool semen—Kaeya just had a dry orgasm.

That alone sent him over the edge. He bit down on Kaeya’s neck until the skin broke and pumped one last time, the deepest he could get, before shooting his come from his pulsating cock into the greedy cavern.

He released Kaeya’s thighs, his muscles relaxing as he basked in the afterglow of his second orgasm. The younger’s walls shuddered and twitched around his half-hard member, pumped full of his seed.

“If only you can get pregnant,” he mumbled wistfully to himself, easing his dick off the loosened entrance. Only then did he realized that Kaeya wasn’t responding. Shifting the knight to the bed beside him, he found that the other had dozed off, probably fainted after his shocking dry orgasm.

Smiling to himself, he kissed at a damp forehead, before struggling to get up from the bed to grab some rags and warm water from the bathroom.

He cleaned Kaeya as gently as he could, taking the dirtied shirt off his body, wiping at the dried blood on his neck and his cum that was still seeping out of the younger’s ass—trying his best to not get hard again as he did so.

After he was done, he placed the basin of water and rags in one corner of the bathroom to be disposed of the next morning and hopped back into the bed again. He took off Kaeya’s eyepatch with the softness of a feather, kissing the closed lid that held a billion galaxies.

Carefully pulling on the thick covers of the bed, he snuggled close to Kaeya, wrapping his arms around the bluenette’s cool body, lending his Pyro-enhanced body temperature for them both before he, too, drifted off.


Kaeya woke up the next morning feeling sore to his core, but oddly content.

Diluc’s face was pressed against him as if he was trying to suffocate himself on Kaeya’s chest. His pale arms were snaked around his waist, but when he finally noticed one of his hands was lazily massaging at his buttcheeks, he realized Diluc was actually awake.

“G’morning,” the redhead mumbled thickly against his warm chest, kissing the skin softly before nuzzling his cheek on it instead like a kitten.

“Morning,” Kaeya kissed the top of Diluc’s wildly mussed hair, “well it’s actually afternoon, judging by how high the sun is.”

“Wh’tevr,” the redhead grumbled, not unlike a kid despite last night’s activities.

The knight captain chuckled, ruffling Diluc’s hair even more, “well Adelinde will be worried if we don’t show up soon. Since I did tell Elzer that they shouldn’t disturb us until morning. And it’s past morning—”

“Shuddup,” Diluc groaned, pulling Kaeya’s face down to shut him up with a kiss—only to be pushed away.

“No,” was the stern rejection, “morning breath,” was the obvious explanation.

With that, and struggling a bit, Kaeya successfully disentangled himself from the octopus-like Diluc Ragnvindr, taking careful steps to the bathroom—limping and internally cursing while doing so.

The Darknight Hero stifled the urge to whine and complain, and instead turned on his back fully, listening to the sound of Kaeya brushing his teeth and stepping into the bath. He should probably go too... but he suspected Kaeya wouldn’t appreciate him joining at that moment. Not that hearing the bluenette curse his name over and over again behind the door deterred him or anything.

.

Kaeya liked to take long baths, pampering himself with hot water and various products, which was why Diluc took the time to drift back to sleep for a bit.

When he woke up again, the knight was already dressed in his usual billowy white blouse and tight, waist-high breeches, and his eyepatch back on, looking every bit like the sexy pirate that he told the traveler about.

“Go brush your teeth and shower, Luc,” the knight reminded him absently, going about the room in a domestic manner, tidying up their strewn clothes from the night before and, “what’s this?” he said, picking up a brown package that fell from Diluc’s coat.

“Leave that on the table,” Diluc motioned to the bedside table as casually as he could, swinging his feet down to the floor and stretch his arms up like a cat—unabashed with his lack of clothing around the man who had seen his everything.

Kaeya shrugged and put it down where Diluc said and fussed about the bed when Diluc went into the ensuite.

Unlike Kaeya, Diluc took quick showers that did their job cleaning his body and nothing more. His utilitarian approach was often judged by the younger, saying that baths will make him feel more relaxed and make his skin soft yada yada—Diluc would only take long baths when Kaeya joined him, all right? And never beside.

So no more than ten minutes later, he walked out with a fresh breath and a bathrobe over his damp skin.

Kaeya was now sitting by the vanity in one corner of the room—purchased when he demanded it since he also had one in his apartment in Mond—grooming his silky tresses and preening like a peacock through the large mirror.

It was always so strangely fascinating seeing him doing his morning ‘beauty ritual’. He seemed to be at the last leg of the routine, however, combing luxurious oils down his hair with an expensive, jade encrusted boar-bristle brush Diluc gifted him from one of his travels to Liyue.

A smile graced his lips, the peaceful domesticity of the sight made something inside him flutter. He didn’t want moments like these to ever end.

He took the small package on the bedside table, noting in relief that Kaeya hadn’t broken the seal yet out of curiosity. Breaking the scarlet wax himself, he tipped the brown paper until a small, palm-sized velvety indigo box landed on his palm.

Kaeya was Dutch braiding his hair to the side, focusing on the silky strands curled around his deft fingers on the mirror, and then taking the red ribbon pinched between his lips to tie the end of the braid. Looking down at his braid, he tightened the knot of the ribbon and adjusted the bow, not noticing Diluc’s approaching form in the mirror.

He felt more than saw something cool touching the hollow between his collarbone and he looked up, only to see Diluc standing behind him in the reflection, his expression charmingly tender. His gaze shifted down to his own neck and his small smile blossomed into one so happy that his cheeks flushed red.

Resting innocently between his collarbones was the most exquisite shivada jade gemstone, crafted beautifully with the Ragnvindr family crest engraved on its surface. He touched the thumb-sized gem with his finger, appreciating the craftsmanship of the engraving and its golden frame that twisted around the pear cut gemstone, like delicate wires, before joining the chain of the necklace like a flowering ivy.

Diluc fastened the precious jewelry on the back of Kaeya’s swan-like neck, before his hands slid down, one to rest on his shoulder, and the other taking Kaeya’s hand in his and as he leaned down to kiss it.

“Happy Yuletide,” he murmured softly, shifting his lips to Kaeya’s ears and peppering kisses down his neck, before tilting the younger’s head so he could claim those sweet lips again.

.

To another year surrounded by loved ones—

 

—and amazing sex.

Notes:

I like that Kaeya can't stand seeing Diluc's suffering during his 'punishment', but Diluc had no problem making him cry, even enjoying it more lmao