Ladies and gentlemen, I present to you: kiribakumina.

Two Birds, One Stone

CW: poly ship kiribakumina, omega Kirishima, alpha Ashido, beta Bakugou, abo, intersex omega, intersex alpha, light bondage, breeding kink, face sitting (cunnilingus)

Happy birthday to my dear @/Erato9420 as well as our sweet gremlin boy Bakugou.

Bakugou, as a teenager, never gave two shits about secondary sexes. He was a beta, and he never understood what the hype was all about. To him, Kirishima had always seemed knot obsessed, even when they started dating in third year.

That was before they introduced Mina into their relationship, long before they opened their hero agency with Deku.

As much as people expected Bakugou to always be stubborn and obstinate, he really changed when Mina came into their lives.

Seeing how happy she made Kirishima during his heats set off a spark. He felt intimately tied to both, and they let him participate in both heats and ruts.

Neither of those cycles could've prepared him for the way he woke up on his 30th birthday.

Deku had insisted he take off for the day, considering he hadn't had a day off in literally a year (his 29th birthday). What he didn't know was that his partners were also taking the day off.

So, he'd been expecting to wake up alone, work out, shower, maybe make a nice breakfast for himself... but when he awoke, he found he couldn't move his arms or legs.

"The fuck..." he muttered blearily, blinking hard in lieu of rubbing the sleep out of his eyes.

"He's awake~" Mina purred, a soothing growl that imitated the omegan purr.

"Happy birthday, Katsuki," Eijirou rumbled from the other side of him, rubbing their scent glands together. He smelled sweet, content, yet... Katsuki knew that heady layer of need underneath it all too well. He didn't need a sharp alpha nose to pick it up.

"The fuck is this all about?" He glared Mina's way; this had to have been her idea. She was Momma in the relationship.

"Now, Katsuki baby, that's no way to talk to momma. We wanted to surprise you and give you something really nice, but if you're going to be a brat..."

Katsuki let out a huff, and he had to force himself not to pout at her. "Fine. Fill me in?"

"Nope. It's a surprise," she giggled, leaning close and kissing him all too sweetly.

When she moved, Katsuki took in a few details he hadn't noticed yet. The motion put her breasts right against his shoulder, making him aware that she was nude. Actually, it seemed they all were. Hadn't he gone to bed in boxers? How the hell had they stripped him?

Normally he was too light a sleeper. If one of them got out of bed, Katsuki was awake.

Perhaps they'd given him sleeping pills?

The thought quickly became irrelevant. A hot, wet tongue laved over the tip of his dick, and he groaned against Mina's lips.

He'd been half hard to begin with thanks to predictable morning wood, so it really didn't take much coaxing from Eijirou to draw his dick to full attention. Despite the teeth, Eijirou knew just how to suck a dick, and he paid special attention to the spots he knew Katsuki liked.

"He smells like preheat," Katsuki muttered when Mina pulled back for a breath. "Thought he wasn't due for two weeks."

"That's the first part of your surprise," Mina giggled, running her fingers through Ei's unstyled locks. "You're all ready for us, aren't you, baby?"

"Mhmm...." he hummed around a mouthful of dick. Katsuki couldn't help but groan in response.

"Can you guess what the second part of your surprise is, Kats?" Mina mouthed at Katsuki's throat as she spoke, teeth settling heavy at his throat.

Katsuki's nose twitched at the closeness, and he turned to look Mina over more fully. Her pupils were dilated, and she had a similar heady scent underneath her usual pink bubblegum. It was too distinct to miss.

"You two... synced up..."

"Mhmm. Remember how we were talking about pups, kitten?"

Katsuki blinked, eyes widening comically. Mina couldn't help but giggle at him.

"What? You know, I can put pups in him myself, if you don't want to help."

"No," he growled, chest puffing as far as the bindings would allow.

"Then be a good boy for us. You'll get a nice reward at the end of all this if you behave."

He clicked his tongue, yet didn't argue. It was hard to argue with a mouth on his dick.

Instead, he focused on keeping his hips still. He knew Eijirou had probably been told to back off if he tried to thrust up too much. It became harder to do the more Ei worked, though. He made his way down, taking more and more until he was swallowing around the tip at the back

of his throat. It was one of those things Katsuki loved, and he let out a little breathy moan as his thighs shook in strain.

"Look at that... he's so well behaved," Mina crooned, still stroking red hair. "You better not lose it down his throat, Katsuki."

"Close..." he hissed, hips bucking once unintentionally when Eijirou groaned around him.

"Then we better put that thing where it belongs, hmm?" Mina gave Eijirou a purposeful look, and he drew back slowly, gasping softly for air.

Katsuki was expecting he might get a bit of a break here. Eijirou needed to stretch, and this early into his heat, hormones barely coming to life, he probably wasn't ready yet.

It took his breath away fully when instead, Ei crouched over his dick right away and sat down on it.

The alignment hadn't been perfect, but he slid inside like Eijirou was in full on heat, slicked to hell and loose from several rounds already.

"F-fuck! Ei, so fucking wet, what the hell..."

"I may have done some prep work..." the alpha beside him giggled.

She was in a similar situation: it was too early for her dick to come fully out of its sheathe, but it was sure as hell trying. The head was swollen, and the whole area was flushed red. Katsuki could tell the pouches of her testicles were full by the way she was crouched.

Far too quickly, Eijirou was moving, whimpering as he rode Katsuki's dick with vigor that couldn't be mistaken for anything but heat. He was quick to set a steady pace with no regard for Katsuki's hisses and needy groans.

"So noisy..." Mina huffed, one hand over the swell of her dick that was exposed. "I'm gonna shut him up. You okay with that, Ei baby?"

Eijirou whined and nodded, already lost in his own world.

Mina threw one leg over Katsuki's chest and shifted up, positioning herself to perfectly sit on the blond's face. She grinned and carded her fingers through his hair, and the look held more love than it had any right holding.

"Give me your color, baby."

"Green," he growled past a scowl.

"Good boy. You know the rules."

He did know the rules. He loved this more than he would ever admit to Mina.

Slowly, she sunk down, taking care to position herself just right. Her largely engorged clit slotted perfectly in Katsuki's mouth, and his chin pressed just enough against her cunt to make her shudder.

Katsuki went to work right away, knowing better than to keep momma waiting. He sucked the tip of her dick into his mouth, rolled his tongue over it expertly.

"Mmm, good boy..." she growled, hips rolling in rhythm with the motion of his tongue.

"M-momma, m'close..." Eijirou gasped from behind her, bouncing harder and faster than before.

"Go ahead and cum, baby. You've earned it."

Just how long had they been up for??

He couldn't see the look on Kirishima's face, but he could picture the beautiful arc of his spine as he came, and he could feel wetness on his abdomen. The mental image alone was enough to make Katsuki groan. He was close himself, ready to topple over the edge from all this.

"Oh no, Katsuki, not you," Mina soothed with a teasing tone. "You have to make momma cum first. Can you do that, baby?"

Katsuki growled in an irritated response, but he picked up his pace intensely, sucking hard and angling his head further back.

He knew that pressure put his chin right at Mina's entrance, knew it drove her crazy. She gasped and gripped his hair tighter, riding his face with purpose now. As much as she loved putting Katsuki in his place, today was about treating him, not punishing him.

The closer Mina got, the further Katsuki was able to coax her dick from its hiding place. When her thighs started twitching, one of her tell-tale signs that she was about to cum, he could actually feel her knot trying to form against his lips.

It never fully formed; Katsuki nearly choked, but he did his best to swallow the tip as it hit the back of his throat. Mina's breath hitched on a groan as she came, leaving Katsuki's mouth a wet mess.

As soon as Mina came, Eijirou started bouncing his hips again. He'd been rocking slowly, giving himself a moment to recover, but now he moved with force. Katsuki could feel his muscles restricting, tightening around his cock purposely.

"Kats was a good boy..." Ei sighed almost dreamily. "Now he can fill me up, right Meens?"

"Of course," Mina purred, drawing her hips back. Her dick was retracting quickly, but she still wanted to let Katsuki breathe. He coughed slightly, then swallowed all she had given him.

"Katsukiiii..." the redhead moaned, "please, I need it... wanna be full of pups..."

"Gonna..." Katsuki grunted, turning his head involuntarily. He might not have realized what he was doing, but Mina absolutely did. She knew by now when Katsuki was presenting.

Quickly, she shifted back further and leaned down. It was an awkward arch, but it was worth it for the high keening noise Katsuki let out when she bit down on his tiny scent gland.

He had no time to warn either of his mates; the moment her teeth in his neck registered, he was cumming, hips spasming frantically against Eijirou's.

It all happened so fast, his vision went starry.

"There he is..." Mina soothed, "there's our good boy." She licked the fresh wound on Katsuki's neck and ran her fingers through his hair, gently bringing him back down from his orgasm.

For a few precious moments, Katsuki was in a haze, eyes fucked out and head rolled back. Mina lived for those moments when he gave up the tough guy facade and let himself relax.

Shortly after, though, he was back, panting softly and eyeing her suspiciously.

"Pinky..."

"Yes, dear?"

"Let me out."

"Oh? But we're not done yet."

"I am. Get off me."

"Not a chance, Bakubro," Eijirou laughed, still plugging himself full with Katsuki's dick.

"I told you to stop calling me that."

"Baby, we're gonna call you whatever we want today. We've got a whole thing planned, and all you have to do is let us take care of you. You really can't do that?"

"Not a chance in hell."

Mina pouted for a second, then raised her eyebrows. "Color?"

Katsuki was silent for a while before muttering, "Green."

"Ahahh... there's our baby boy."

《END》