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cw: pills, smut, a/b/o, o!bkg/a!dk
Katsuki and Izuku have desperately been trying to conceive, and Izuku especially is ready to try ever gimmick he can.
Including pills that will make his knot stay popped for longer.
Katsuki and Izuku have desperately been trying to conceive, and Izuku especially is ready to try ever gimmick he can.
Including pills that will make his knot stay popped for longer.
He finds them at his local convenience store. In a little box with big, flashy letters that claim he's gonna last "ALL NIGHT LONG!" and that his mate is gonna "STAY STUFFED FULL UNTIL CONCEPTION."
He's a sucker, so he buys three packs.
He's a sucker, so he buys three packs.
Deku is practically buzzing with excitement when he gets home, the packages weighing heavy in his pocket.
"The fuck are you so happy for?" Katsuki scoffs when he sees him, suspicious of the way Izuku bounces on the balls of his feet in the kitchen.
"The fuck are you so happy for?" Katsuki scoffs when he sees him, suspicious of the way Izuku bounces on the balls of his feet in the kitchen.
"Nothing! It's a surprise!" He chirps, pecking Katsuki on the cheek.
"Stop it, I'm trying to make dinner," he grumbles, nodding towards the hot pan full of curry.
"Sorry! Just excited, I'll get out of your way," he hums. Katsuki eyes him suspiciously, but doesn't press it.
"Stop it, I'm trying to make dinner," he grumbles, nodding towards the hot pan full of curry.
"Sorry! Just excited, I'll get out of your way," he hums. Katsuki eyes him suspiciously, but doesn't press it.
By some miracle, Deku makes it through dinner, and through a bit of TV-watching after.
But then he just can't handle it anymore. When he gets a moment alone, he downs a double dose of the pills and is ready to /go/.
Okay maybe just one more for good measure.
But then he just can't handle it anymore. When he gets a moment alone, he downs a double dose of the pills and is ready to /go/.
Okay maybe just one more for good measure.
He is a pro-hero, after all, and he's afraid his size and strength might impact the effect of the pills. And he /really/ wants to stuff Katsuki full of pups.
So. Three pills.
And then he pounces.
So. Three pills.
And then he pounces.
"Hey, Kacchan," he purrs, moving over his mate on the couch and straddling him. The omega frowns at him, cleaning his neck around him to see the TV.
"What are you- oh," he smirks, eyes catching the massive tent in his shorts. Katsuki gets it now.
"What are you- oh," he smirks, eyes catching the massive tent in his shorts. Katsuki gets it now.
Deku dips down and kisses Katsuki's lips, nipping the bottom one as he goes. Katsuki lets out a low moan and Deku can't help but roll his hips forward, grinding their erections together.
"Shit, someone's horny today," Katsuki chuckles. "Is this your surprise?"
"Shit, someone's horny today," Katsuki chuckles. "Is this your surprise?"
Katsuki's breath tickles Deku's chin as his lips graze along his jaw.
"Yeah, got these pills," he says, rutting his hips again. Katsuki stops.
"Pills? What the fuck?"
"Yeah, got these pills," he says, rutting his hips again. Katsuki stops.
"Pills? What the fuck?"
"Oh um, not like that," he assures him. "Like pills so my knot will last longer."
"Yeah? Fuck, thats hot," he moans, going back to kissing along Deku's neck. "How long is it gonna last?"
"Don't know. Guess we'll find out."
"Yeah? Fuck, thats hot," he moans, going back to kissing along Deku's neck. "How long is it gonna last?"
"Don't know. Guess we'll find out."
Oh fuck I forgot to mention this might have like mpreg/breeding crap in it
BTW ill add more to this tomorrow
Katsuki grins and lays back on the couch, pulling his alpha with him. Excited, Izuku pulls his shirt off over his head before he dives back down and latches his lips against Katsuki's neck, licking and sucking and no doubt leaving hickies.
Katsuki can already feel slick sliding between his thighs in the wide legs of his sweatpants.
"You smell so good," Izuku pants, and Katsuki's omega purrs.
"Yeah? Take off your pants."
"You smell so good," Izuku pants, and Katsuki's omega purrs.
"Yeah? Take off your pants."
Izuku whines against Katsuki's neck, not wanting to leave, but also desperate to be freed. Finally, he nods and gets up, slipping out of his pants as Katsuki does the same.
They've had sex so many times, yet Izuku suddenly seems desperate. Like he's never smelled slick before.
They've had sex so many times, yet Izuku suddenly seems desperate. Like he's never smelled slick before.
Sometimes when they have sex, they fuck. Hard and rough. Other times they make love- where it's sweet and slow and sensual.
Katsuki can tell by Deku's dilated pupils that they are definitely about to fuck.
Katsuki can tell by Deku's dilated pupils that they are definitely about to fuck.
He rolls over onto his stomach, gripping the arm of the couch as he presents himself to the alpha. Izuku follows suite and grips his hips, letting his hard cock rub against Katsuki's ass cheeks while he leans down to pepper kisses along his spine.
"Fucking perfect," Izuku growls. Katsuki chokes. He loves it when Izuku swears during sex. Makes him sound more dominant, more aggressive.
He moans in response and grinds his ass backwards against Izuku's length.
He moans in response and grinds his ass backwards against Izuku's length.
Katsuki sputters as Izuku thrusts in without warning, his cock filling him up and spreading his inner walls.
"Fucking /fuck/," he chokes, slipping against the arm of the couch as he tries to keep his balance. "No fucking prep?"
"S-sorry, you're just . . .so wet," he moans.
"Fucking /fuck/," he chokes, slipping against the arm of the couch as he tries to keep his balance. "No fucking prep?"
"S-sorry, you're just . . .so wet," he moans.
Katsuki gasps as Izuku starts to move, too tempted by the way Katsuki clenches around him to resist doing so.
"Oh, god, it feels so good," Izuku groans, thrusting in and out, quickening his pace. It's gradual at first, but soon he's fucking into him as hard as he can.
"Oh, god, it feels so good," Izuku groans, thrusting in and out, quickening his pace. It's gradual at first, but soon he's fucking into him as hard as he can.
Katsuki can barely keep up. He knows those pills must be sending Izuku's libido through the roof, but even this is a lot. He sticks with it though, even as his mate's dick rams against his prostate hard enough for him to see stars.
"Shit, I'm gonna cum," he rasps.
"Shit, I'm gonna cum," he rasps.
"Yeah? Cum for me," Izuku encourages. He reaches under Katsuki and flips them over so that Katsuki is sitting in his lap with his back against Izuku's chest.
Even as they move, Izuku continues to fuck up into him, then, he pumps Katsuki's cock until the omega is spent.
Even as they move, Izuku continues to fuck up into him, then, he pumps Katsuki's cock until the omega is spent.
Thick, hot cum spurts out and over Izuku's hand. He keeps stroking until he's emptied.
"Holy shit," Katsuki gasps, shuddering before he drops backwards against his alpha.
Izuku squeezes Katsuki's thighs in his big hands as he continues.
"Holy shit," Katsuki gasps, shuddering before he drops backwards against his alpha.
Izuku squeezes Katsuki's thighs in his big hands as he continues.
He drives himself to the edge, slamming Katsuki down over his cock like he weighs nothing as his knot expands.
He locks into him, cursing and sputtering as he shoots his load up into his mate, filling him with cum (and hopefully pups).
He locks into him, cursing and sputtering as he shoots his load up into his mate, filling him with cum (and hopefully pups).
"You horny fuck," Katsuki chuckles, leaning into Izuku as he wraps his arms around Katsuki from behind and moves them slowly into a more comfortable position.
"It's probably the pills. I really hope I pupped you," he sighs, adjusting again so that they're spooning in the couch.
"It's probably the pills. I really hope I pupped you," he sighs, adjusting again so that they're spooning in the couch.
"Yeah, same," he sighs, slowly.
They drift off into a lazy, post-sex nap, cuddling and lightly scenting. About an hour later, Katsuki wakes up and moves to get up.
But he can't.
They drift off into a lazy, post-sex nap, cuddling and lightly scenting. About an hour later, Katsuki wakes up and moves to get up.
But he can't.
He moves his hips to wiggle himself off of Izuku's cock, only to find that his knot is still fully formed.
"Oh, Kacchan," Izuku murmurs, barely stirring from his sleep and rutting into Katsuki slowly.
Katsuki winces, still sensitive and still full of his alpha's seed.
"Oh, Kacchan," Izuku murmurs, barely stirring from his sleep and rutting into Katsuki slowly.
Katsuki winces, still sensitive and still full of his alpha's seed.
"Fuck, Izuku," he grits, his dick twitching even through the sensitivity.
"What?" Izuku yawns. Strong hands find Katsuki's hips as he starts grinding into him more. He moves slow, like he's milking every sensation he can get out of Katsuki.
"What?" Izuku yawns. Strong hands find Katsuki's hips as he starts grinding into him more. He moves slow, like he's milking every sensation he can get out of Katsuki.
"I'm sensitive," he hisses, cursing his own damn cock for being into it.
"Kacchan," he gasps, fully awake. He moans again and presses his face into Katsuki's gland, drinking in his scent. "You feel so good, Kacchan."
"Kacchan," he gasps, fully awake. He moans again and presses his face into Katsuki's gland, drinking in his scent. "You feel so good, Kacchan."
"Ahh," Katsuki pants, gripping the edge of the couch. Izuku can't pull out enough to really be fucking into him, but the way he rolls his hips is just enough to hit Katsuki's sweet spot over and over again.
Katsuki whimpers as he fists his own length, pumping and stroking.
Katsuki whimpers as he fists his own length, pumping and stroking.
"I don't know what it is Kacchan," Izuku mumbles against the smooth, hot skin of Katsuki's shoulder. "I just can't stop fucking you."
"Idiot," Katsuki chokes. "It's the damn pills."
"Idiot," Katsuki chokes. "It's the damn pills."
"Oh yeah," Izuku says, dazed as he continues to rut. Katsuki squeezes his eyes shut as he comes for the second time, shooting over his hand and dripping onto the carpet.
Izuku moans as Katsuki's walls clench and pulse around him.
Izuku moans as Katsuki's walls clench and pulse around him.
Still sensitive from the first time, Izuku climaxes again, filling Katsuki even more.
"Ah, fuck, Deku, so full," Katsuki grunts, wincing at the sensation.
This time, after they're both done, Katsuki stays awake.
"Ah, fuck, Deku, so full," Katsuki grunts, wincing at the sensation.
This time, after they're both done, Katsuki stays awake.
He waits and waits for Izuku's knot to go down. It doesn't usually take this long.
The most he's ever stayed popped was maybe thirty minutes. And they had definitely been sleeping longer than that.
Another hour passes.
The most he's ever stayed popped was maybe thirty minutes. And they had definitely been sleeping longer than that.
Another hour passes.
"I think something is wrong," Katsuki says, reaching back and elbowing a sleeping Izuku in the ribs.
"Huh? What?" He mumbles.
"You've still got me knotted," he says.
"That's what the pills are for."
"Huh? What?" He mumbles.
"You've still got me knotted," he says.
"That's what the pills are for."
"What? To last for over two fucking hours?" He scoffs.
"Maybe. I took extra," he sighs. "Ah, maybe I didn't need to take them."
"No shit," he shouts. "My ass is on fucking fire."
"Hell yeah it is!"
"Maybe. I took extra," he sighs. "Ah, maybe I didn't need to take them."
"No shit," he shouts. "My ass is on fucking fire."
"Hell yeah it is!"
"What- no, Deku, come on," he grunts. "You gotta get out."
Deku whines, like he's still horned up. Still ready for another round.
Katsuki isn't ready. Deku holds his hips and tries to move.
"Shit, it's still stuck."
Deku whines, like he's still horned up. Still ready for another round.
Katsuki isn't ready. Deku holds his hips and tries to move.
"Shit, it's still stuck."
"Fuck, Deku, what the hell?!" Katsukis says, a little more hostility to his voice. "Where did you get this shit?"
"Uh, the corner store?" He mumbles, sheepishly. "The box said it would help with conception."
"God, Deku," he groans. "What are we going to do?"
"Uh, the corner store?" He mumbles, sheepishly. "The box said it would help with conception."
"God, Deku," he groans. "What are we going to do?"
"Wait? What else can we do?" He mumbles. Katsuki shivers as Dekus lips find his neck again.
"Deku, come on, not again," he whines. His hole throbs. It's not used to being stretched open for so long.
"Sorry, I can't help it," he whines. "You're too sexy."
"Deku, come on, not again," he whines. His hole throbs. It's not used to being stretched open for so long.
"Sorry, I can't help it," he whines. "You're too sexy."
"Just- let's sit up," he urges, and they move together so that they're sitting again.
Which is a mistake.
Because as soon as Katsuki sits up, he slides further down over Izuku's knot, stretching deeper somehow.
"O-oh," Katsuki shudders.
Which is a mistake.
Because as soon as Katsuki sits up, he slides further down over Izuku's knot, stretching deeper somehow.
"O-oh," Katsuki shudders.
"That's good," Izuku murmurs.
"No! No, it's not, quit that," he groans. "I can't believe you went and overdosed on sketchy knot pills. What were you thinking?"
"That I wanted to put a baby in you," he replies, without missing a beat.
"No! No, it's not, quit that," he groans. "I can't believe you went and overdosed on sketchy knot pills. What were you thinking?"
"That I wanted to put a baby in you," he replies, without missing a beat.
Katsuki's chest flutters at the way that Deku speaks about impregnating him. His mind drifts briefly to the obscene amount of his alpha's seed still flooding his womb.
"Fuck, don't distract me," he rasps. His dick is getting a little too interested in Izuku's words.
"Fuck, don't distract me," he rasps. His dick is getting a little too interested in Izuku's words.
They wait it out another hour.
"Deku this can't be fucking good," Katsuki insists. "We gotta go see a doctor or some shit."
"How are we supposed to see a doctor like this?!" Izuku chirps,noting the fact that they could barely stand upright.
They would have to get creative.
"Deku this can't be fucking good," Katsuki insists. "We gotta go see a doctor or some shit."
"How are we supposed to see a doctor like this?!" Izuku chirps,noting the fact that they could barely stand upright.
They would have to get creative.
"Alright, so you can stand and pick me up," Katsuki says, trying to think through their situation.
"Like this?" Izuku asks, scooping his arms up under his knees. Katsuki hisses as he does that, still stretched too wide.
"Y-yeah."
"Like this?" Izuku asks, scooping his arms up under his knees. Katsuki hisses as he does that, still stretched too wide.
"Y-yeah."
"Oh, this is a nice angle," Izuku chuckles as soon as he's upright. Katsuki groans.
"Not now, you dumb knothead," he grunts.
"Nnnnnng, fine," Deku whines. "What now?"
"Gotta . . . Go to the ER probably."
"Not now, you dumb knothead," he grunts.
"Nnnnnng, fine," Deku whines. "What now?"
"Gotta . . . Go to the ER probably."
"What! Kacchan, how?" Izuku shrieks, a little more coherent upon hearing that they might have to leave the house like this. "I can't drive like this."
"Well, we might have to suck it up and call someone," he grits. "I'm not about to have my ass destroyed because of this shit."
"Well, we might have to suck it up and call someone," he grits. "I'm not about to have my ass destroyed because of this shit."
"Who would be able to help?" Deku asks.
"I don't know, Kirishima maybe?" He sighs. "Go to the kitchen, my phone is on the table."
Izuku nods and carries him over to the kitchen table. When Izuku lets go of his legs, his feet barely touch the ground.
"I don't know, Kirishima maybe?" He sighs. "Go to the kitchen, my phone is on the table."
Izuku nods and carries him over to the kitchen table. When Izuku lets go of his legs, his feet barely touch the ground.
Katsuki leans over the table for support while Deku stays standing. He picks up his phone and dials their friend's number.
Surely he's done something stupid like this before and won't judge them too harshly.
Surely he's done something stupid like this before and won't judge them too harshly.
"Hello?"
"Hey I'm gonna tell you what's going on and you're not allowed to ask questions," he grits. The alpha on the other line pauses.
"Uh okay? You're not in a hostage situation are you?" He asks. "Blink once if you are - wait no!"
"Hey I'm gonna tell you what's going on and you're not allowed to ask questions," he grits. The alpha on the other line pauses.
"Uh okay? You're not in a hostage situation are you?" He asks. "Blink once if you are - wait no!"
"I'm not in a hostage situation," he groans. "I'm stuck on Deku's knot."
Izuku whimpers in shame.
"You're stuck on his . . Huh. Okay," he mumbles. "How-"
"No. Questions."
Izuku whimpers in shame.
"You're stuck on his . . Huh. Okay," he mumbles. "How-"
"No. Questions."
"Sorry man! What do you need from me though?"
"I need you to um, drive us to the ER," He mumbles.
"You need me to drive you. While you're still stuck on your alpha's- whew, okay," he chuckles. Katsuki can practically hear him shaking his head in disbelief.
"I need you to um, drive us to the ER," He mumbles.
"You need me to drive you. While you're still stuck on your alpha's- whew, okay," he chuckles. Katsuki can practically hear him shaking his head in disbelief.
"Listen. I'll fuckin' pay you if you want me to," he insists.
"Sure thing, bro! Just ah, make sure you cover up!" He chirps and Katsuki rolls his eyes. Kirishima says something about being there right away.
He hangs up the phone and groans.
"Sure thing, bro! Just ah, make sure you cover up!" He chirps and Katsuki rolls his eyes. Kirishima says something about being there right away.
He hangs up the phone and groans.
"Mm, this is a nice angle," Izuku hums. Katsuki winces as Izuku rocks his hips slowly.
"Please, Deku," Katsuki whines. "I love you, you have to at least try to control yourself."
"But Kacchan, it's hard! You just feel so good," he explains.
"Please, Deku," Katsuki whines. "I love you, you have to at least try to control yourself."
"But Kacchan, it's hard! You just feel so good," he explains.
He likes the praise. He loves his mate.
But he's had his swollen knot stuck in his ass for way too long.
By the time Kirishima arrives outside, Katsuki has manage to (painstakingly) turn himself so that he can wrap his legs around Izuku's waist.
But he's had his swollen knot stuck in his ass for way too long.
By the time Kirishima arrives outside, Katsuki has manage to (painstakingly) turn himself so that he can wrap his legs around Izuku's waist.
Izuku hoists them up like that so they can put shirts on and most of his pants on.
Then he pulls the duvet from their bed to cover Katsuki with.
It's ridiculous, but it works.
Then he pulls the duvet from their bed to cover Katsuki with.
It's ridiculous, but it works.
Kirishima hardly stops laughing the entire way to the hospital. Katsuki is embarrassed, but its better than waiting around and finding out if things get worse.
What's more embarrassing is walking into the hospital like this.
What's more embarrassing is walking into the hospital like this.
Deku covers Katsuki's face and wears a hat and sunglasses. Better to not have people recognizing them as Pro Heroes.
The receptionist hides a giggle when Deku tells her what happens, and lets them sit in a more private waiting area.
The receptionist hides a giggle when Deku tells her what happens, and lets them sit in a more private waiting area.
In the entire hour that it takes to be seen, Deku's damn knot still hasn't gone down.
So they need to somehow be medically separated.
So they need to somehow be medically separated.
Izuku feels awkward laying in a hospital bed with Katsuki still stuck on top of him.
His dick is still hard and he's still tempted to keep fucking his omega. But the urge isn't as persistent as it was before.
His dick is still hard and he's still tempted to keep fucking his omega. But the urge isn't as persistent as it was before.
"Ahh, so we've got a knot pill overdose?" The doctor says as he enters.
Katsukis face burns red and Izuku nods.
"Not to worry, it happens."
Katsukis face burns red and Izuku nods.
"Not to worry, it happens."
"It does?" Izuku asks.
"Of course. People get carried away. You never know how powerful these things might be because they aren't strictly regulated," he explains.
"Just get him off me already!"
"Of course. People get carried away. You never know how powerful these things might be because they aren't strictly regulated," he explains.
"Just get him off me already!"
"Of course," he says. He has something in a syringe that he administers to Izuku through IV. After several moments of waiting, Izuku's knot finally starts to deflate enough that Katsuki can wriggle himself free.
"Fuck, that was a nightmare," Katsuki scoffs, scrambling to cover himself with the hospital gown he had been given. He shivers as cum leaks down his thighs.
"Alright, well, we're gonna check both of you out to make sure everything is okay. I'll be back."
"Alright, well, we're gonna check both of you out to make sure everything is okay. I'll be back."
Disclaimer: all the medical stuff is just made up a/b/o au nonsense don't take it too seriously.
Katsuki lays next to Izuku as they both get blood drawn and checked for infection.
Everything ends up fine.
Until the doctor says he noticed something on one of Katsuki's tests.
Everything ends up fine.
Until the doctor says he noticed something on one of Katsuki's tests.
"Is everything okay?" Izuku asks, wrapping his arms around Katsuki protectively.
"Yes absolutely. Katsuki, were you aware that you're pregnant?"
Katsuki's eyes go wide and he shakes his head. Because /no/ if he had known they could have avoided this whole damn thing!
"Yes absolutely. Katsuki, were you aware that you're pregnant?"
Katsuki's eyes go wide and he shakes his head. Because /no/ if he had known they could have avoided this whole damn thing!
"Well... congratulations! I'd say you're about four weeks along."
-END-
-END-
