#alphasakusa

[lemontsumu]

// omegaverse , mpreg , post-partum

Kiyoomi had just finished tidying up the kitchen after a late brunch when he finds Atsumu napping on the swivel chair in the nursery, the twins tucked nicely in their beds, milk drunk and cooing soft babbles intelligible only to the two of them.

He pauses for a moment to adore his pups, melting in fondness when he notices their knobby fingers touching between the pillowed lattice separating their cribs.

Like clockwork, his gaze shifts to Atsumu on the plush chair and he can’t help falling to his knees before the omega. His omega. His sweet, darling omega basking under the afternoon sun with one arm held up over his head and both feet propped on the ottoman, lips slightly parted with a string of drool on the corner of his mouth.

Kiyoomi lets out a low chuckle, thinks he paints a pretty picture regardless.

Carefully, he closes the distance between them and settles between the omega’s legs, eyes fixated on the softened lines of Atsumu’s face, dark brown hair tousled in an endearing mess of waves above his shoulders, tiger stripes adorning his chest, his stomach.

Kiyoomi slips a thumb under Atsumu’s silk top and rubs gentle circles along the stretch marks on his tummy, nosing along the faded lines on his thighs where he lingers in reverie.

“Omiiii,” Atsumu whines as he wraps his arms around Kiyoomi’s neck, the scent of peaches and honey piercing the air and stirring Kiyoomi from his trance. “Stop, why are ya so kinky?”

“What, can’t I take a moment to recharge and admire my mate’s body?” Kiyoomi rests his chin on Atsumu’s lap, trying his best to pull a puppy face he knows only Atsumu is effortlessly good at.

Atsumu rolls his eyes playfully and giggles. “I wake up to my alpha sniffing me in a questionable position. Not that I mind… but what if I hit ya, or crush yer head in my sleep?”

“Then I’d tell you you’re threatening your alpha with a good time,” Kiyoomi grunts into his ear as he digs into the meat of his thighs, flipping them over so Atsumu is on top of him.

Atsumu squeaks in surprise, eyes blown wide and cheeks tinged wine red—Kiyoomi knows he can get drunk on this sight with one sip.

“What’re ya-!” Atsumu protests poorly, his pheromones betraying him.

“Mhm, you know I can smell you, right?” Kiyoomi smirks, pressing a tender kiss on Atsumu’s temple. “It’s okay. You always make me horny too.”

“Don’t saying the h-word in front of my babies!” Atsumu whisper-shouts, squishing Kiyoomi’s face between his palms.

Kiyoomi shrugs. He tips his head, closes his eyes, and puckers his lips, coaxing Atsumu for a kiss.

Atsumu sighs in defeat but happily obliges.

[lemontsumu]

(This is an AU where Kiyoomi and Issei are brothers)

Kiyoomi fondly watches Atsumu playing with his niece, making silly faces to make her laugh and indulging her silly tricks, light pheromones dancing in the air around them in delight.

“Mama! Puppy, puppy!” she squeals, stuffing her fox plushie under Atsumu’s sweater.

“Yer really excited to become a big sister, aren’tcha, Akari-chan?”

Akari nuzzles her cheeks against Atsumu’s faux baby bump, promptly wincing in distaste when she picks up on the alphan scent—Kiyoomi’s scent—drenching Atsumu’s clothes. “Stinky!” her face contorts with genuine disgust, her tiny nose wriggling adorably still.

“Haha! Uncle Omi reeks, doesn’t he?” Atsumu playfully coos, releasing his pheromones. He hoists Akari in his arms and perches her on his lap, the little girl immediately seizing him in a big, warm hug and burying her nose in Atsumu’s l scent glands, giggly breaths tickling his neck.

From the other end of the couch, Kiyoomi rolls his eyes and scoffs, arms folded over his chest, helplessly endeared but foolishly jealous of Atsumu’s special bond with his brother’s daughter.

“So possessive, Kiyo-chan~” Tooru teases in a singsong, emerging from the kitchen with a whole tray of baked muffins, fresh out of the oven. “They’re just having fun. Don’t get mad at my babies,” he adds, knowing fully well Kiyoomi absolutely hates it when he uses the pet name for his omega.

Kiyoomi lets out a disgruntled groan.

Behind Tooru, Issei chuckles and wraps his arms around his mate, rubbing soothing circles on Tooru’s round, bulging belly. Tooru twists his neck and gives his alpha a kiss on the lips, short and sweet.

“Mommy and Daddy are flirtin’!” Akari gasps as she hides her face in her hands, mindlessly mimicking Atsumu’s accent in excitement.

“Of course we are, darling!” Tooru huffs, utterly shameless. “How do you think did mommy get pregnmrph-!”

“Not flirting, sweetie. Love love!” Issei shoves a muffin into Tooru’s mouth to shut him up.

Akari peeks between her knobby fingers, then she lunges into Atsumu’s arms and tackles him in an embrace. “Love love!”

Atsumu snuggles into the small bundle of joy, holding her tight.

Kiyoomi sighs, defeated yet uncontrollably fond.

When honey eyes meet his own, they share a wordless understanding through fervent gazes, heavy and sultry and /aching/ for each other. Longing for something they’ve always had close, but not quite their own.

They’ve been ready for a while now, so it’s no surprise they’ve reached a tipping point.

Kiyoomi’s inner alpha howls in anticipation.

A silent promise is conveyed in mellowed scents, which doesn’t go unnoticed by the other pair of fated mates in the room. Issei and Tooru turn their heads with matching mischievous looks, snickering, catching the shift in Kiyoomi’s temper.

But Kiyoomi could care less, for his mind is set on one thing alone: whisking Atsumu away and taking him home.

For tonight, Kiyoomi is a man on a mission.