Thread by @pettykawas

#ushioi — nsfw, omegaverse, age difference, “pup” as a term of endearment, slight praise and breeding kink

Tooru has been on the receiving end of a few comments since he started dating Wakatoshi, a younger alpha.

“Will your pup be coming, Tooru?”

Tooru whips his head towards Issei, who is looking at Tooru with his familiar lazy grin. Their friends have yet to arrive at the restaurant, and Tooru supposes that the alpha would be teasing Tooru to pass time.

He huffs. “No, he won’t. And for the last time, he’s only younger by six years.”

Of course, the comments were never really intended to slight Wakatoshi, who they have essentially adopted into their pack.

They were meant to poke fun at Tooru, who’d always been somewhat vain and, as of late, had been feeling quite sore about the deepening of his laugh lines and the few gray hairs he’d found.

It’s a natural part of aging, his friends had pointed out, but their reassurance did little to console Tooru.

He would never say it out loud—although, with how well his friends know him, perhaps he wouldn’t have to—but dating Wakatoshi has given him a bit of an ego boost.

When you’re an unmated, unbonded omega at 35 years old, people start treating you differently. They think remarks about your fertility are warranted, or some bullshit like that.

Make no mistake: Tooru is a fucking catch, and he knows it.

But not even he is a stranger to the occasional stab of insecurity. Worse, not even six months after they broke up, his ex decided to mate and bond with an omega who is ten years his junior. (Tooru had a good cry about that one.)

Wakatoshi is different, and it’s not /just/ because he’s an omega’s wet dream on legs. He also fucks Tooru so thoroughly that Tooru isn’t given any chance to doubt just how desirable Wakatoshi finds him, fine lines and gray hair and all.

So, maybe, when Tooru gets home from his dinner with his friends, he’s still preoccupied by what Issei had said. And maybe he’s thinking about all the ways Wakatoshi’s youth /does/ show, because none of Tooru’s former lovers could compete with Wakatoshi’s virility and stamina.

And maybe that’s why, when Tooru is lost in the feeling of Wakatoshi’s wide cock hitting a spot just shy of his prostate, his mind starts to unravel and his mouth becomes mortifyingly honest.

“Yes, yes, so good,” Tooru babbles, tears staining his cheeks and pillowcase, slick dripping from his ass to his thighs. “Come on, come on, come /on/. Please, pup, fuck me!”

Wakatoshi stills from behind him, and when the haze of pleasure fades just enough for Tooru to realize what he’d said, he fervently wishes for the mattress to swallow him whole.

“Fuck, sorry, Toshi, I didn’t mean—”

Tooru didn’t know what to expect, but he certainly wasn’t prepared to hear the most guttural /alpha/ sound leave Wakatoshi’s lips before pushing his cock as deep as Tooru could take it.

Fuck, Wakatoshi /likes/ this.

“You—you like this?”

Wakatoshi doesn’t say anything. He lets out a groan so pained Tooru would have believed he was hurt, but his cock is pulsing where it’s buried within Tooru, and, oh /god/, his knot has begun to swell, kissing Tooru’s rim.

What else could Tooru have done except close his eyes, lower his head onto the pillow, and spread his legs as wide as he could?

“Fuck me, pup,” Tooru moans. “/Fuck me/.”

Tooru needn’t say it twice.

Wakatoshi fucks him within an inch of his life. Like an animal, like a goddamn beast, like an alpha intent on breeding his omega until Tooru’s stomach swells with cum, grows with life, and for their lives to be forever intertwined in the most tangible way possible.

He bares his neck, a gesture that makes Wakatoshi’s hips stutter, but Tooru’s hands are quick to grab Wakatoshi’s ass, fingers digging into the firm flesh to ensure Wakatoshi is as flush against Tooru as possible.

“No, pup,” Tooru whines, “I want you /deep./”

When Wakatoshi’s knot does sink in, Tooru honest-to-god /wails/, so close to being sent over the edge. The sound bouncing off the walls is indecent, barely the sound of skin on skin with slick and precum in between their hips, and it’s the hottest thing Tooru has ever heard.

“So good for me,” Tooru cries. “You’re doing so good for me.”

The young alpha groans, knot growing from Tooru’s tight heat and shower of praises. God, had Tooru known that Wakatoshi got off on this, they could have been fucking like this from the /beginning/.

Now, Tooru is unraveling again.

There’s one thing on his mind and one thing only: being bred until he’s so full he’s leaking.

“Wakatoshi,” he babbles. “So good for me, pup, please—ah—please fill me up. Please, pup, /please/, want your cum. /Breed me/—”

“Tooru,” Wakatoshi growls into the junction of Tooru’s neck as he grinds his knot into Tooru, hard and dirty and desperate, again, and again, and again. “/Omega/.”

Wakatoshi releases into him, hot and wet, and Tooru is filled to the brim. If the alpha’s knot hadn’t locked in, he’s certain cum would be flowing from where they’re joined.

When Wakatoshi slows the movement of his hips, strokes Tooru’s cock, and bites down on the spot on Tooru’s neck that he had sworn he’d one day put a mating bite, Tooru cums with a cry.

More than a few heartbeats pass before any of them speak.

“I didn’t know you liked being called pup,” Tooru says.

“I felt ambivalent,” Wakatoshi admits sheepishly. “I did not anticipate this.”

“It was hot during sex, huh?”

He feels Wakatoshi nod from behind him, feeling his bashfulness and delight sweeten the edges of his usual bold scent. The alpha adjusts his embrace so that Tooru can comfortably rest his weight against his lover until they are no longer connected.

(And if Tooru’s being honest, it’s /this/ that truly sets Wakatoshi apart. He’s attentive. He’s considerate. He makes Tooru feel like he’s the only omega that Wakatoshi sees, and maybe that isn’t even far from the truth, with the way Wakatoshi looks at him.)

“Wakatoshi?”

“Hmm?”

“I love you.”

The sweetness in the alpha’s scent deepens, and Tooru’s scent begins to sweeten, too.

“I love you too, Tooru.”

/ I wrote this mostly because I was curious about what pet names existed in the omegaverse. If irl we have “kitten”, “baby”, or “daddy”, I suppose “pup” would be something they’d say in an affectionate or sensual manner?

(Also I just needed Older Oikawa + Younger Ushijima + praise and breeding kink lmao.)

Another Ushioi thread fic I wrote with a similar flavor:

https://twitter.com/pettykawas/status/1506082440129163264