6/13/22, archived from Twitter
A/B/O with minor NSFW mention, as usual
Luckae - omega Kaeya, alpha Diluc, lots of scenting
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Lck (also fits with klc if dynamics are switched) with omega kae going into heat
Except during his heat for the first many cycles, he's deathly afraid Diluc is going to leave. Abandon him. It's happened once and he's convinced the rug will be pulled from beneath him again
He clings to Diluc with a death grip, and he shakes, so distressed that it's physically nauseating for them both.
Diluc doesn't know how to soothe him at first. He's caught by surprise - the once confident and untouchable Kaeya decimated in the wake of his heat.
He curls Kaeya so close in the middle of their nest, grip just as tight as Kaeya's clinging to him, and whispers. He tries to solve it logically - talk it out - but Kaeya's mind is stuck in… scared animal mode. It's mush, and he's terrified and can't think beyond it.
Kaeya's eye is so big looking up at him. His body shakes like a leaf despite the raging fever on his skin and all the nesting blankets around them.
Diluc's heart breaks. None of this is normal, and he doesn't know how to make Kaeya feel better. How much of a useless alpha can he be?
It's a long couple of days. Kaeya is only calm when he's sleeping or in the midst of conflicted orgasm. Sleep doesn't come easy.
He panics whenever Diluc needs to get up for the bathroom or getting their food/drink. He panics whenever Diluc shifts the slightest bit.
"Kaeya, my love, shhh… I promise I'll be back," Diluc hushes, petting through a delirious and whimpering Kaeya's hair. "If I let you go any longer without water, you'll get sick."
His nails dig into Diluc's skin and eye alight with fear and tears. Diluc's heart shatters.
"I'm not leaving you." Diluc kisses Kaeya's forehead ever so gently, rubbing his sides and back. His insides twist and he wants to cry at how miserable his omega is.
"That's--" Kaeya sniffles, and hiccups through all his words, "that's what you said-- years ago 'n you left and I was alone and no one wanted me and I-- I can't--"
The more he spoke, the more hysterical he became.
"An'-- An' tha's what y'said yesterday 'n--"
Diluc really does think he's going to cry at the end of all this. There's nothing but pain in Kaeya's voice and guilt radiates through him suffocatingly.
"Kaeya, sweetie, I'm--" Diluc swallows thickly and buries his face into Kaeya's hair. "I'm so sorry."
Is that all he can say? That he's sorry?
"Yesterday I took a shower, and I came back to you."
Kaeya had slipped beneath the covers and curled up, disturbingly like an animal giving up on life when faced with a predator. When Diluc didn't come back immediately, he was convinced that Diluc had left him for good.
It took an hour and a half to bring Kaeya down from that.
"What if I brought you with me?" Diluc asks after a long moment to breathe. "I carry you downstairs with me."
Kaeya latches onto that and agrees.
Diluc ends up bringing Kaeya everywhere with him from that point forward.
When Kaeya's heat ends, the daze he was caught in fades and he's… Strangely the same.
He's out of it, tired, and sore, but in the next day or two, he's right back to normal.
Diluc intends to talk to Kaeya about what happened, but the omega dodges the question.
Until it's too close to Kaeya's next heat and Diluc catches him in the midst of nesting in his bed.
"Kaeya," he sighs, closing the door, "we need to talk."
"About what?" Kaeya asks, pressing a pillow into place. He's skittish again as his heat creeps closer. Diluc needs to be careful.
"Your heat."
Kaeya stills. He tenses warily. "What about it?"
Diluc frowns. "It worries me. I don't know if you remember, but you were… Petrified the entire time." He watches Kaeya carefully, noting how his shoulders sink. "Would barely eat or sleep, and I could barely mate you."
Not that Diluc is thinking of himself, but an omega begs to be bred in heat.
Kaeya was so paralyzed he could hardly do that. Diluc feels like an awful alpha not being able to even satisfy his omega in that way.
Kaeya works his jaw, gripping a blanket tight in his fingers. He refuses to look at him. "I'm sorry my heat was so unenjoyable."
Diluc blinks, dumbfounded.
"Unenjoyable?" he repeats. "Kae, that's not--" He rubs a hand over his face. "That's not why I'm here."
Kaeya keeps his head down. "What is there to talk about, Diluc?"
"Plenty. You were--" Diluc bites the inside of his lips. "You were so scared."
Kaeya swallows.
Diluc doesn't want to ask the question on his tongue. He doesn't want to know the answer and the consequences that came with it; they're trying so hard to mend things and it's worked so far, but if he's the reason their relationship crashes and burns…
"Are you scared of me?"
Kaeya's head snaps up, eye wide. "No! Not… Not normally."
Not normally. Something inside Diluc wilts. Kaeya has every right to be cautious, Diluc has no business being upset.
"Then what can I do?" He's practically begging. "It's cruel to let you suffer convinced I'm going to leave." He approaches Kaeya and grabs his hands, holding them to his chest. "I love you, Kaeya. I meant it when… When I said I'd do everything possible to mend this."
Kaeya's eye stays wide, twinkling. Surprised, maybe, or wordless.
There's so much unsaid between them it hurts - even the good things, of how they're so enamored with each other. Thoughts kept out of reach, locked in safety until… Until when? Neither of them know.
Kaeya's next heat is rough again.
Diluc, from experience, brings Kaeya everywhere with him straight off the bat. He brought more clothes over for the nest to surround his omega, stockpiles food and water in the bedroom, and nocks Kaeya into the orgasmic delirium sooner than fear's. There's only so much someone can focus on when their alpha is between their legs, eating them out like his life depended on it.
Still, the fear inevitably settles in and Kaeya is back to laying on top of Diluc, as if it will weigh him down and keep him there.
"Alpha, alpha," he whispers shakily, wrapped completely around his mate.
Diluc never thought such a long and lanky man could ever feel as small as he does now.
"I'm here, love, I'm here," he croons, placing a hand on the back of Kaeya's head and guides him to the crook of his neck. There, Diluc puffs a dizzying amount of calming pheromones.
"And I'm never leaving you. You're mine, mine, mine. My beautiful, lovely omega."
Over the coming cycles, Diluc learns one thing that makes or breaks Kaeya's heat.
Scenting.
It's a natural part of their dynamics, to scent, but Diluc finds that he has to scent /everything/ possible in order to keep Kaeya calm.
Two days before Kaeya's heat is supposed to show, Diluc slips into Kaeya's apartment.
It's how it usually is - on the cleaner side and a mix of their scents.
Diluc first grabs the throw pillow on the couch and rubs his cheek against it until he can only smell himself.
He goes to the armrests and rubs the insides of his wrists, and the edges of the walls, the tables, lamps. When he makes it inside of the bedroom, not one item is spared.
Pillows, blankets, bedframe, nightstand, dresser, window-- hell, even the trinkets on the shelves.
Diluc is vaguely nauseated smelling so much of himself in one place. But he got the job done, and if it lets his mate enjoy a /proper/ heat, then so be it.
The next day he does it again, and the day that Kaeya falls into heat, he drenches the nest in pheromones.
That is the single greatest heat Diluc's ever seen Kaeya have. The realization and joy bubbles in Diluc so hard he actually does start to tear up, and a purring-- oh so /loudly/ purring, and he wouldn't have it any other way-- Kaeya rolls on top of him, asking what's wrong.
Kaeya is warm, and so are his cheeks, rosy and happy and that /smile./ Gods, Barbatos above, that smile is the brightest thing Diluc has ever known.
Kaeya's hazed and out of it, but the alpha's scent surrounding him like a barrier comforts him.
Diluc liberally applies more as the hours go on.
Kaeya sleeps less, and enjoys getting bred more, and even /begs/ for it more. He's dripping full of Diluc's cum, trilling so happily about being pupped.
When Kaeya naps on Diluc's chest, Diluc swells with a kind of warmth he cannot describe. He lets relieved tears out. A weight has been lifted off of both of their shoulders, and all Diluc wants to do is worship his mate.
Make him happy. Make him feel /safe./
“How are you feeling?" Diluc asks Kaeya once he's waking up, rumbling deep purrs to his omega.
"Mmm…" Kaeya buries his face into Diluc's neck and takes a deep, slow breath. "Warm… Comfy… Safe." He angles his head and whispers, "Pup me, alpha?"