Thread by @morphasia4

Shamelessly NSFW Luckae thread
CW: A/B/O Dynamics, Omegaverse, Mpreg, lactation, Pregnant sex, Overstimulation, General pregnancy things.

Alpha!Diluc / Omega!Kaeya

Please mute accordingly. Thread starts below.

Despite Diluc's best efforts to convince Kaeya to take a break from work while he was carrying their child, Kaeya is not only stubborn, but infamously restless when he can't drink alcohol.

He lasts all of a week in his fourth month of pregnancy before he is back at the Favo HQ.

Jean, at least, is convinced to not let him out on patrols or in the front line of danger, something the smooth-talking Omega despises, but... even paperwork is doing something.

Doing something like stressing him out when he shouldn't be stressed out.

It is... a very forgiving thing that Diluc doesn't say 'I told you so,' when Lisa reports that Kaeya had gone home early, not feeling well--because it couldn't be because he was overworking himself while he was /pregnant/ or anything.

Not at all.

Diluc makes it back to the Winery in record time, where Adelinde had taken him that afternoon. Diluc curses himself for being out on an errand. He should have been the one that they'd called to take him home.

When he makes it through the door, he's all hellfury and fire, less anger at Kaeya for overdoing it and frustration that he hadn't been there for him.

Adelinde catches him at the door and clears her throat, gently.

"He's fine. Just embarrassed."

That alone makes him pause, his brows furrowing a little in evident confusion. "Embarrassed?"

She looks as if she /might/ want to tell him, but... she doesn't, shaking her head and gesturing him on towards the master bedroom. "If you're mean with him right now, I'll burn your bacon for a week, Master Diluc."

Adelinde's threats were rare, but always genuine.

He makes it to their bedroom in record time, shrugging off his jacket to toss it on the back of the small desk chair the minute he got past the door. He had an actual office, but... having the desk in the room let him work nearby if Kaeya needed him for anything.

Kaeya had been dozing, but he was never able to sleep through anything moving in the room that wasn't there when he'd dozed off in the first place, and took a sharp breath as he came back to consciousness the minute Diluc took a step towards the bed.

"...Luc?"

"Kae," he confirmed, letting the other relax back as he moved to sit on the side of the bed. "Jean told me you were feeling under the weather.

"Is that all she said?"

"Mhm."

"... You are not going to /believe/ the day I've had."

Diluc reached out across the covers, and squeezed Kaeya's hand, relieved that he felt well enough to be a bit dramatic about the events leading here. "Try me?"

Kaeya gave him one, long skeptical look that insisted without words that Diluc had better /not/ say 'I told you so.'

It started with the regular complaints; Jean fussing a little too much, as she tended to so--Kaeya was her /one/ Omega friend, and she liked to look out for him.

Particularly stubborn recruits.

"And then, half way through drills, my-" He grimaced, pausing. Was he... blushing?

"You...?" Diluc tries to question, at Kaeya's stubborn pause.

Kaeya exhales sharply and scowls away, before muttering under his breath. "My /chest/ started leaking."

It is like someone has dropped a very horny bomb right in Diluc's subconscious mind. "Your what?"

Kaeya gives him a look that says he /knows/ Diluc heard him, and he's not repeating himself.

"Right, sorry," Diluc answers, unable to help but let his glance fall to the other's open sleep shirt.

He can see the gauze bandages under them, and feels heat creep up his neck.

"Adelinde said it'd help. They're sensitive right now-" Kaeya mutters, not quite aware just how much /that/ turns on Diluc, too, but he could see the other peeling the blanket's back to get a little closer.

He slips between his legs, scooting Kaeya up against the pillows.

"Can I see?" Diluc asks, knowing Kaeya would at least be a little comforted by his closer scent. He presses close enough to pepper a little kiss against Kaeya's mate mark at the curve of his throat, knowing /that/ usually won him over.

Kaeya shifts, the redness to his cheeks growing a little. "What for?"

Diluc's hand starts at his side, before creeping up slowly on the outside of his shirt to cup one pectoral. It... does feel a little heavier than normal.

Kaeya catches the scent of arousal instantly.

"Oh, you pervert," he breathes, but there's no actual bitterness in it. Really, he can't help but be a little relieved that it /does/ turn Diluc on. With the steady, subtle swell of his stomach becoming more obvious each day, maybe he'd had his worries about being able to do so.

His hands say something else, reaching up to his shirt to tug it open, slowly.

Diluc's hands focus somewhere else completely, reaching down to tug Kaeya's legs up carefully, ridding him of the sleep shorts he'd been wearing; he hadn't lying about being more sensitive.

He isn't wearing anything under his pajamas.

Coupled with the sight of Kaeya now only dressed in the white, gauzy square bandages over each nipple, Diluc is already hard.

"Easy," Kaeya murmurs, as Diluc reaches up, peeling off both bandages as if he's unwrapping a gift.

The inside of the gauze is a little wet, sweet smelling though he hardly wastes time with them, setting them aside.

He leans forward, kissing Kaeya's collarbone first.

He makes his way down one pectoral to the dark, pretty nipple that seemed just a little swollen. His tongue flicks across it first, drawing a gasp from Kaeya immediately, and somewhere down near Diluc's wrist, he can feel his Omega's cock stir, too.

It's hardly sugary, but there's something sweet about the taste that lingers there, and Diluc wraps his lips around the pert bud, swirling his tongue there before sucking, once.

Kaeya's gasp is audible, squirming against the pillows. Fingers tangle in Diluc's hair.

The draw is dry, though, and with the softness Diluc can feel against his lips, he /knows/ he's a little pent up.

So he sucks again, harder this time, and Kaeya nearly sobs with something between desire and agony and relief all at once.

Diluc is rewarded with warmth on his tongue. The fresh heat of milk, right from the source, and the slight scorch of having his hair pulled as Kaeya's hips jerk up.

His free hand wanders down between his Omega's thighs, and Kaeya is /wet./

How sensitive must his Omega be, that he's been laying here in misery to the point he'd had to bandage his nipples? This couldn't have just been from Diluc's lips in the last few minutes.

His fingers sink into him easily, and Kaeya squirms on them. Diluc sucks again.

It makes Kaeya squeeze in a way that Diluc thinks is a fully pity that he couldn't feel with his cock, instead.

So he pulls his fingers out, scrambling shamelessly to wipe them /gently/ on Kaeya's already wet thigh, before he reaches down to take care of his pants.

It takes enough focus that he has to pull away from that now-flushed, pretty nipple, to free himself. Kaeya's breath is short, coming in quick little gasps.

He hadn't been joking about being sensitive.

"Gentle," he admonished, because his day had already been dangerously stressful enough.

Diluc didn't need to be reminded twice to go easy on his pregnant mate. Not when he could see the clear bump of his child in the rise of Kaeya's stomach.

He takes just enough time to press forward between his Omega's thighs again, sinking half into him before his lips moved to the unaccosted nipple, wanting it to be just as swollen and shiny as the other, now.

One hand wrapped around Kaeya's cock. The other reached up to gently coax the nipple he'd already been nursing, pinching it at the same time his palm massaged it. Warmth spilled over his fingers, and Kaeya nearly sobbed with relief against his red curls.

Diluc wouldn't say 'I told you so,' but... this would definitely serve as 'punishment' enough for Kaeya overdoing it.

Each brush of teeth, each draw of milk makes Kaeya shiver around him, squeezing him tight as his nails make indents in Diluc's shoulder.

While one hand milks him until the little rivers of white run down Diluc's wrist and arm, other strokes him slowly enough to be maddening. Though he is still early in pregnancy, and wasn't supposed to lactate quite yet, he still produces enough for Diluc to drink almost freely.

Diluc's hips roll almost leisurely against Kaeya's. He doesn't need to fuck him fast, here. He can take it as slowly as he likes--just as he was milking Kaeya, his Omega is practically milking him with the squeezes and roll of his soft folds around him.

There are tears on Kaeya's cheeks, and the way his breathing can't quite even tells Diluc all he needs to know--he's feeling /all/ of it. It's too much to process in that state, tired from the day and so, so tender.

Diluc's thrusts draw half-whimpers, and if he wasn't already bred, Diluc would put money on this being able to put Kaeya right into heat again.

When he can draw no more milk from the nipple between his teeth, he makes a show of cleaning the wasted liquid from his other wrist.

He finishes his 'meal' off by tilting up, kissing away Kaeya's tears as his hand starts to move a little faster. It's salt to the sweet, an apology for driving him to such lengths, but something about Kaeya's crying face is pretty, too.

It makes his hips roll a little deeper.

He loves this. He loves reducing his Omega to tears with pleasure, he loves seeing the small flutter of his eyelashes when he's close, the way Kaeya grasps at his wrist to keep him from stroking his cock too much.

He does anyway. He pushes him to those extremes.

He's deep when he hits his own climax--only seconds after Kaeya is pushed over the edge too, crying out as he squeezes Diluc tight.

One hand still teases a nipple. Kaeya chokes on a soft noise, and Diluc feels another, unexpected side effect of his Omega cumming.

The milk he hadn't nursed dry from him squirts against his palm and down his other pectoral, running free as Kaeya tilts back against the headboard, shaking as he rides out his climax on Diluc's cock.

Diluc hadn't intended to go this deep, but the sight makes him push fully in to that welcoming heat. He knots his Omega on the spot, leaning forward to groan into his chest while his tongue laps up the wasted spill.

Kaeya's wordless and boneless, his fingers stroking his hair.

The knot will keep him in that pleasant haze for half an hour, at least.

And Diluc?

Well, Diluc's going to milk him dry before he can even move again. It's the least he can do for his sweet Omega, to make sure that uncomfortable pressure doesn't build up anymore.

///end!

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