Thread by @izukusbones

#BKDK #NSFW A/B/O, Public Sex AU, ql o!Izuku, ph a!Katsuki, Support Omega Izuku

"M'not... weak." Kacchan finished through gritted teeth. "I don't need it. I don't need to pop a knot!"

"I'm not saying you're weak!" Izuku interjected sharply. "Let me sit on your cock, damnit!"

Part 9 of Support Omega Izuku!

Summary: Alphas need to knot omegas and omegas need to be knotted for their wellbeing. As a support omega, Izuku helps meet the needs of alpha heroes. He's pretty good at it, but his new assignment isn't so easy.

First:

https://twitter.com/izukusbones/status/1491435689464180739

Kacchan's fangs were bared, his nails threatening to puncture the cushion of the chair. His scent screamed OMEGA. NEED. HELP. Yet his demeanor was that of a cornered animal, liable to lash out at the slightest threat. Any other omega would've run out of the room with their tail—

between their legs, but Izuku new better. Kacchan wouldn't hurt him. Even inside of a spiral, alphas were hardwired to protect omegas. Once Kacchan entered a feral state however, all bets were off. Izuku would be mince meat in seconds.

"I don't—" Kacchan tried again, but—

stopped when Izuku's wrist rubbed gently over his scent gland. A shudder ran through the alpha and he bared his neck to allow for more of Izuku's scent to be spread over him. A sheen of his own scent oil made it harder to get Izuku's pheromones absorbed into his skin. Using a

tissue, Izuku wiped it away before climbing into Kacchan's lap.

Kacchan tried to growl, but it came out a pitiful whine.

"You're not weak." Izuku murmured, resting a hand over Kacchan's cheek. "You're just stressed. I know we've had a rough start, but it hurts me to see you—

like this, especially when I know I can help. Please, let me help?"

"I don't need it." Kacchan croaked, leaning into Izuku's hand. His skin was feverish to the touch, scent still soaked in pain.

Izuku could feel his body slicking up in response to Kacchan's need. It was—

soaking Kacchan's pants already. He couldn't help but notice the way Kacchan's nostrils flared when he smelled Izuku's slick in the air.

"You're not weak, nobody thinks you're weak." Izuku reminded him. "You just saved me from that weirdo."

Maybe it wasn't a good idea to—

stroke Kacchan's ego, but if it got his dick inside Izuku, then fine. He'd fluff it up until it fell off.

"No." Kacchan murmured, so soft that Izuku nearly brushed it off as an accidental whine, but when his eyelids cracked open, reveal twin rubies tendered to melting point.

Izuku rested his hands against Kacchan's chest, studying him for a moment. He felt his gaze, but it wasn't as harsh and scorching as it had been before. It was warming him from the inside out. Izuku wanted to lean into it, to croon and submit. Never before had he experienced—

this kind of reaction when he was so close to an alpha. None of his boyfriends he'd shared his heats with or the heroes he'd serviced. Not once had this felt so intimate.

Izuku couldn't believe it.

"No?" He asked, raising an eyebrow.

Kacchan shook his head, then groaned."

"Omega... please. H-help."

Izuku wanted to press more, but the strain in Kacchan's voice was almost grating to him. Alpha needed him. Alpha needed omega to feel better. The rot in his scent was almost unbearable now, and if Izuku didn't act now they were all in trouble.

So, he let it go, for now, even though he knew there was no way Kacchan would explain himself after this. He'd be back to his snarling, bitter, omegaphobic self. For now, Izuku needed to savor this, so he could make all the trouble worth it.

He knew he was being stupid, just—

one nice moment wasn't enough to make up for whatever this job was going to put him through, but Izuku wasn't Izuku if he wasn't giving people who really didn't deserve it a second chance.

Any hesitations he had though fell away as he sank down on Kacchan's cock. The sound of—

relief Kacchan made was incredible. He slumped back in his chair, his hands settling gently at Izuku's hips. Thankfully, he didn't try to force Izuku down any faster, allowing him to go at his own rate. It wouldn't have mattered if he had since Izuku was still fairly stretched—

from earlier, but it was the polite thing to do and Izuku appreciated it.

Once he had bottomed out, he leaned against Kacchan's chest, petting against the scruff of his neck to keep him calm. Kacchan chuffed and chirped, rubbing his face all over the top of Izuku's head.

Izuku let him, chuckling softly to himself. Kacchan was so docile like this. Unlike other alphas, he wasn't trying to thrust up or get Izuku to ride him completely. He was just letting it be, his knot slowly inflating inside the tight cunt clenching around him in a steady rhythm.

If this was what servicing Kacchan was going to be like, he might get through this job after all.
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TBC! Be sure to follow me for updates!

And while you're here, make sure to check out my other horny threads:
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