Work Text:
They knew. They all fucking knew it was going to happen. The teachers. Their fellow classmates. Even fucking Deku knew.
Things had been going… well not exactly smoothly, but for a pregnancy revolving around a rare male omega things had gone pretty decent so far.
And that’s the thing.
Deku had terrible luck. The worst possible luck.
He’s a god damn trouble magnet for fucks sake.
They all know this.
And trust him, they had tried to stop this, but the higherups refused to budge. It was either Deku participate in the exam, or risk failing and therefore not graduating.
And Deku had worked way to hard not to graduate. Had been through way too much shit to just give it all up.
Especially, within the past year.
He doesn’t fault the school for this situation though. Principal Nezu and the rest of their teachers had been very intent on keeping Deku in school. Most schools would have just kicked the omega out at even that faintest hint of pregnancy.
Not U.A.
U.A. stood its ground against the media and omega haters who from day one had, had shit to say about letting a male omega into the Hero course. Maybe it was because U.A is a progressive school. Maybe it was because Deku (though the teachers would deny it) was a favorite amongst the staff.
Maybe it was because Deku had been raped while under the school’s care.
And that was another thing that bothered Katsuki.
Well… more like a major thing… because Deku refused to tell them who did it. He also refused to press charges, because given the fact he’d gone into heat, and it was an alpha that had done the deed, the alpha would probably receive nothing more than a stern talking to.
Which was true, and if anything made the situation even more fucked to shit.
Luckily, he knew the guys scent. From the moment Deku had stepped into the dorms one morning after being missing still slightly flushed from heat, and smelling of fear and some other alpha, Katsuki had made sure to lock that scent away. He hadn’t found the dude yet, but the day he did he was going to teach that fucker a lesson, and he was sure given how protective their classmates/packmates had become of Deku they would gladly help him out.
Unfortunately, that did nothing to help them at the moment, because Deku was still very much heavily pregnant, very much mateless, very much in labor, and very much alone with two alphas who had very little idea on how to handle the situation.
It had been a relatively simple exam given the fact it was mandatory for their graduation. A capture the flag/stealth/recovery group thing type test. He’d been placed with Deku and Shitty Hair, which was honestly a great decision on the teacher’s part.
He himself was the firepower. That if shit hit the fan, he could keep the other fuckers, the ‘enemy’ away. Plus, he was probably one of the few people that could actually get Deku to listen to reason and keep the omega from doing stupid things. Deku, who obviously was forbidden from fighting, was their strategist. He came up with the plans. Kirishima was their second fighter/Deku’s shield, so in case one of their classmate’s attacks went a little haywire he could protect Deku.
It was perfect. Things had been going perfect.
But Deku was still nine months pregnant. Due date less than a week away, looking like he was ready to pop any day, and with the worst luck any single person could possibly have.
They all knew that as soon as Deku set foot into forest their exam was taking place in he was going to go into labor. Aizawa had even had a class discussion about it (Deku had been mortified, understanding, but mortified).
Katsuki was still not prepared for the first noticeable wince.
“Deku?”
Deku waves him off, smiles as he says it’s nothing more than some Braxton Hicks, false labor. He encourages them to keep going.
“Please, Kacchan.”
And even though he knows Deku is lying though his teeth. All three of them know that it’s not ‘false labor. It’s the real god damn deal.
Kirishima and he agree and they keep going.
They manage to avoid their classmates. They only had to stop like fifty times for Deku to pee, which was way better than the hundred times he was predicting. They manage to capture their chosen flag. They have literally passed the exam. All they have to do is take the short walk (because Deku all but refuses to run anymore and like hell are he and Kirishima fighting him on that) back to where they know Aizawa and the rest of the staff is waiting for them.
It’s really just that simple. That close to finishing without any problems.
And then, just as everyone predicted, shit hits the fan.
“Oh.”
He turns. He knows exactly what he’s going to see before he even sees it.
“Please, please tell me you pissed yourself.”
“Um,” Deku shift himself. The adrenaline rush from the exam is long gone, and all that’s left is exhaustion and fear filling the Omega’s bright green eyes as he stares down at the wet spot forming along the lower half of his hero costume. “I think my water just broke.”
“You think?”
Deku makes a displeased noise at him then lets out a loud groan as he doubles over. Both hands coming to rest on his swollen stomach. Him and Kirishima both shift forward on instinct, before immediately taking another step back.
A big thing that had been drilled within their heads about pregnant omegas was that they did not like to be crowded. You needed to wait for them to come to you. Especially, pregnant omegas in labor. In fact, most omegas giving birth didn’t even let their mates near them. It was the reason most omegas delivered at home, unless told otherwise due to risks, and even then, the doctors and staff usually watched from another room, or watched from the corner, and only came close when absolutely necessary.
Though Deku was literally the sweetest little fucker to ever exist, and would never outright hurt them, he was still a mateless omega stuck in the middle of an open forest about to give birth with a quirk that could literally crush their skulls in.
“Midoriya?”
Kirishima tries moving closer to the distressed omega, but smartly stops when said omega lets out a loud growl.
A literal growl.
Great.
Kirishima looks back to him and gesture vaguely in Deku’s direction as to say “you try.”
Double great.
“Deku… what do you want us to do? We can’t read your mind. You need to tell as what you want us to do.”
Deku makes another displeased noise. He looks back and forth between the two of them, before reaching out towards Katsuki.
“Kacchan. Help.”
He moves slowly. Makes sure Deku can see every one of his moments as he steps closer to the omega. Once he’s close enough though, Deku grabs him and presses in close. Katsuki lets his hands come to rest on the omega’s lower back and belly, keeps them there when the omega doesn’t disapprove, and tries to keep his scent calming as Deku braces some of his weight against him and breaths in his scent.
“Hmm. Kacchan.”
He glances over to Kirishima. For a guy who was literally just growled at by the sweetest motherfucker to ever exist he looks rather pleased.
The fuck?
“Oooooh no, not again.”
He focuses back on the omega in his arms as another contraction seems to take hold of the shorter male. It only lasts a few seconds but by the end of it Deku is panting and sweating against him.
“Kacchan need… need to keep walking. Can’t… not here.” The omega whines at him and shakes his head.
Right. Plan. Yes. Right. He can do this.
“Shitty Hair! You go ahead. See if you can find a teacher or someone who can help. Keep an eye out to for … I hate to say but just in case a safe place. Somewhere where Deku can get a little privacy… just in case.”
Kirishima literally salutes at him of all things before turning tail and dashing off before Katsuki can give him any shit about it.
Fucker.
He readjusts his grip on Deku. Part of him just wants to lift the other boy into his arms and run until they reach someone much more qualified to handle this shit, but he knows Deku, and the nerd wouldn’t appreciate that type of treatment at all.
And again, the idea was not to piss the omega off. He preferred to have all of his bones not broken, thank you.
“Alright, Deku. You set the pace. You need to stop, we stop. You need to sit down, we stop. You feel any changes with the baby, you speak up. Anything feeling off. Say it. Got it?”
The omega makes a noise that sounds to be a perfect mixture of an affirmative yes and a pained groan.
He’ll take it.
He shifts them both forward, and slowly but surely Deku begins to lead them.
Their progress is slow, but it’s something. It seems like every other minute their having to stop so Deku pant his way through another contraction. Every time the omega leans his weight against him and clings onto the front of his costume. Every time he shushes and praises the omega, rubs gently at the others back in what he hopes is a comforting manner. And then the contraction ends, they shuffle forward a few steps, and the process repeats.
It’s probably not even ten minutes before Kirishima comes crashing back into view. There’s nobody with him. Deku let’s out another low growl.
‘I… I think I found a place,” he breaths in a gasp of air and makes eye contact with the displeased omega. “It’s not I mean… It’s probably not what you were hoping, but … it’s a little alcove next to a lake. It’s not too deep, but it’s got walls and a roof and the only way anybody would be able to see you is from the front. It isn’t to big either, but there should be enough room for you to stretch out comfortable. There’s also some long grass nearby that looks pretty comfy. We could line the floor with it if you want to…”
Deku stares at him critically. One hand on his belly while the other grips almost a little too tightly to Katsuki’s arm.
“Is… do you think it’s good enough for my pup?”
“I,” Kirishima sighs and runs his hands through his shitty locks messing his precious spikes up even more. “Midoriya I… I wish we could do so much more for your pup and you. I… I’d do anything for you to feel safe and comfortable right now. If you feel that you can make it back, great. If not then… I really think this place can work, and if it’s not then I’ll do whatever it takes to make it to your standards. I just want you and your pup safe and comfortable.”
Deku shifts more of his weight to lean against Katsuki and sniffles.
“Kirishima I… thank you… I’m sorry for growling at you.”
Shitty Hair laughs.
“It’s fine dude. Knowing me it probably won’t be the last.”
The moments broken by another contraction wracking its way through the poor Omega’s frame. It would have sent the shorter male to his knees if not for the strong grip Katsuki has on him.
They’re running out of time.
“Deku, I know you’ve got a lot going on right now, but you need to tell us what you want. Do we go to the alcove, or do we keep walking?”
Deku hisses softly before the tension in his body eases slightly as the contraction finally ends.
“Deku?”
“Alcove… let’s oh, alcove please. I trust Kirishima. It… I want to go there, please.”
He nods and looks to Shitty Hair.
“How far?”
“Eight minutes … maybe fifteen max if Midoriya needs to rest a lot.”
“Alright, lead the way.
They move slow. Kirishima keeps his distance the entire time. Only speaking to warn them of low branches, or possible sticks and roots that Deku may trip on. Whenever a contraction hits Kirishima wisely keeps a good ten-foot radius, and looks at everything but the suffering omega. They both know that even though the nerd had apologized for growling he still wasn’t very comfortable being around the red-haired alpha at the moment.
Which honestly raised a lot of questions as to why he was clinging to the blonde so tightly.
Katsuki could admit that Deku and him had formed some sort of relationship similar to a friendship since their big smack down during their first year at U.A. Their second year had been spent with the two of them trying to figure out how to properly speak to one another, challenge one another, and bring out the best in each other.
And then their third year Deku got pregnant and their entire dynamic began to change again.
Deku usually never really … acted much on his omega instincts. The nerd didn’t take shit from alphas, and no longer cowered when being bossed around. That wasn’t to say that he didn’t have ‘omegay’ moments, but typically a hug from a pack member or a quick little class cuddle puddle and the omega was fine. Even heats, though Katsuki knew tired the nerd out, didn’t keep the omega down for long.
But then Deku became pregnant.
It wasn’t to say that he wasn’t the same hard-headed idiot. He still pushed himself a little too hard. Still needed to be reminded to function and eat and not spend all his time on hero training, but … it was like a switch had gone off in the green-haired male. Like, suddenly all the omeganess he’d been surpassing was just suddenly set free. He was needier and clingier. His emotions everywhere. He was stressed. Sick. Nothing about the pregnancy had been easy.
And without an alpha, a mate, the father of his pup around he’d been missing a major piece that helped ease these problems for omegas.
So, Katsuki and their classmates, their pack, had tried to fill that space.
Katsuki especially had spent a lot of time with the pregnant omega, and not just because he was the lead alpha of their weird hodgepodge pack, but because Deku had made it very clear that Katsuki’s scent calmed him. Had literally said it out loud to said blonde in one of his rare moments of boldness. So, Katsuki let Deku close because it was something that nerd needed, and though Katsuki was an asshole he wasn’t going to leave the greenette hanging over something as simple as scenting.
And okay, so yea it had slowly evolved into them spending far too much time together, and yea maybe they’d done something that resembled cuddling a few times, and Katsuki had also been the one to take Deku to his medical checkups and delivery classes because the nerd had been too nervous to go by himself and like hell was Katsuki trusting the anxious nerd with anyone else but…
It still didn’t explain Deku’s sudden clinginess to him now. Deku should be shoving him away. Growling at him. Doing anything other than clinging onto Katsuki, and letting the alpha so close during such a vulnerable time in his life. Most omegas would have long since pushed their mates away this far into labor, but Deku seemed to just be clinging to him tighter and tighter.
Maybe he was afraid of being alone in such a wide, unfamiliar area. Maybe he just needed to use the alpha as a walking stick? Maybe once they got the omega settled Deku would get testy with his proximity, and shove him away.
Katsuki wasn’t sure. For now, he’d just follow whatever Deku needed and wanted him to do. Play it all by ear and hope he doesn’t get his face smashed in by an unhinged omega.
“Kacchan.”
He stops walking and peers back down at the omega in his arms. Deku’s face is pinched tight and pale. He’s scent is a mess of different emotions and feelings that it’s hard to pin down exactly how the other is feeling at the moment.
“Feel sick.”
“Sick? Like you’re going to throw up?”
That’s another thing too. He can’t even remember how many mornings, afternoons, and nights camped out in the bathroom as said omega lost whatever bit of food, he’d managed to eat that day. The term morning sickness was a damn lie.
Deku gives a low groan and nods very slowly, while reaching out to grip onto a nearby tree. Katsuki moves with him, helping lower the other boy to the ground just as Deku loses the little bit of food he’d managed to eat this morning. Katsuki helps balance the omega, and rubs his back in more of a muscle memory at this point than anything.
“Easy Deku, remember to breath. You’re okay.”
The omega in his arms whimpers then chokes and gasps. He dry heaves as big fat tears begin to drip down pale speckled cheeks.
At this point they’re not going to make it.
He turns to make eye contact with Kirishima who seems appears to be watching them from a safe distance.
“Go on ahead. Start gathering grass. I’ll follow your scent to the alcove. If we don’t show in ten minutes then go back to trying to find help.”
The red head nods and gives him a thumbs up before taking off in the direction of the alcove.
“K-kacchan.”
“I know, Deku. I know. Do you trust me?”
Deku makes a soft gasping sound and whimpers.
“A-always Kacchan.”
“Good. Then please don’t smash my face in for doing this.”
He doesn’t give the other time to respond. Just grabs the suffering omega and lifts him bridal style, which is honestly no easy task given the fact that Deku is almost all solid muscle with a baby in his belly, and just the cutest bit of fat sticking to his body that Katsuki really tries hard not to think about late at night. He manages though, and takes chase after Kirishima. The omega in his arms makes a soft displeased growl that’s less “get the fuck away” and more “I’m displeased by this turn of events.”
Katsuki takes this as he gets to keep is face intact for another day.
---
Just as Shitty Hair promised the alcove isn’t far.
They can’t stand up in it, but it’s wide enough for Deku to lay out and get comfortable. It’d shielded too making the omega only visible to someone standing directly at the entrance.
By the time they arrive Kirishima has already piled quite a bit of grass on the floor. He also has seemed to find help in the form of Pony-tail who has apparently made blankets that she’s spread out over the grass, and IcyHot who appears to be boiling a tub of water.
Pony-tail is the one that greets them.
“I tried to make the softest blankets I could for him to nest in. They probably smell a bit too much like me though, I’m not sure how to make them smell different. Todoroki is boiling some water. I left a clamp and some scissors next to the nest we put together too for when the baby comes out. We sterilized them as best we could given the situation.”
She’s telling him these things he realizes. Eyeing him like she knows something.
He grunts at her and moves to set Deku down, while making a mental note to question her about this shit later.
Right now, he’s still on Deku duty.
So, he keeps his eyes focused on the unsteady omega who’s giving his new surroundings a very, very critical eye. Watches as the omega leans down and sniffs at the quickly put together nest with a displeased look on his face. Watches as the omega snarls when Half n’ half steps just a little too close with his tub of heated water, which the ugly alpha quickly sets down and hurries away.
Now, it’s just them he realizes. The others getting the hint to give Deku his much-needed privacy. He should leave too.
“K-kacchan can you?”
He shifts his focus back to the omega who’s sat back up in his nest looking exhausted and red faced, as one hand tugs at the mask of his hero costume.
“Can you help me get this off. I can’t… I need,” the omega makes a distressed noise, pleading eyes staring up at him before slipping shut, as both hands move to grip at his swollen belly. Katsuki kneels down next to the other and waits for the contraction to end and the omega to peer up at him again with tired eyes. “Kacchan.”
“I’ve got you, Deku.”
He helps take off the other’s outer gear. Keeps his focus on the gloves, belt buckle, pads, shoes, mask, and not the panting omega before him. Deku goes for the zipper stretched tight against his back, but nerves appear to make it almost impossible for the tinier male to get a good grip.
“Kacchan, please.”
He takes a deep breath and grips onto the zipper, and tugs down. He tries his best not to touch any bare skin, and adverts his eyes.
He wants to look. He wants to see. He wants touch.
But Deku isn’t his. Deku is vulnerable right now. He refuses to take advantage.
He needs to leave. He shouldn’t be here.
“Kacchan.”
He helps Deku with the rest. He catches glimpses of pale flesh dotted with endless amounts of freckles, a hint or two of green hair he isn’t privileged to see, and one lickable heavily swollen dusty-pink nipple. He works to keep his focus of folding Deku’s hero costume to not focus on the pale beauty lying completely naked before him.
He can hear Deku shifting, blankets, pillows, and grass being pushed around as the omega no doubt fixes the nest to his liking, and from the way Deku’s scent grows heavier in the air, rubbing his scent on every available surface he can.
He’s always loved Deku’s scent. It reminds him of apples. Of comfort, home, and something else that he can’t quite name, but makes him feel warm inside in just the most perfect way. Lately though, it’s altered slightly. An almost milky and honey like scent mixing in with the apples to somehow make the lovely scent even more irresistible.
He defiantly needs to leave.
He wants to stay. How badly he wants to stay and help, be there, but…
This isn’t his child. Deku isn’t his.
He needs… he needs…
“Kacchan.”
“Sorry Deku, I’m going.”
“Katsuki?”
He freezes.
“Kacchan …. Katsuki I …. I want to ask you something, before you leave. I… it feels weird saying this with your back to me. Can you look at me please I… I want to ask you something.”
He turns. Deku’s sitting up in the nest facing him. A thin blanket hiding his sex. His chest is on display though. Heavy and swollen, heaving slightly as he breathes. He stares a tad too long before finally forcing his eyes away to focus on Deku’s sweaty face.
Instead of anger or disgust Deku gives him a sweet smile in return. His cheeks pinking up a bit.
“You… you can look if you want. I… I don’t mind if it’s you.”
“Oh?”
“I,” Deku squirms a bit. One hand coming to rest on his belly. “I know this isn’t the best time. I actually was hoping to talk to you about this before well,” he gestures to himself. “But… things happened a bit quicker than planned. I just… a few of our friends pointed out to me that … that you may like me. like, like like me. At first, I didn’t agree, because I’m… well I’m me… and pregnant, but… the more I thought about it I just… you’ve been my greatest support these past couple months, and you always try so hard to make sure I’m okay and just…”
“I wanted to ask you… I meant to ask you before but…. I wanted to know if you’ll stay. I… if you don’t like me like that, or if …. If you don’t want to stay, I won’t be upset. I don’t want you to force yourself to do something you’re not comfortable with, but … I thought I’d at least ask.”
“You…. You want me to stay?”
Deku nods.
“You want me to stay for the birth? With you? In here?”
Deku nods again.
He stares. He stares long enough to watch Deku suffer through another contraction, because this… this is a lot. This is more than just helping.
This is an omega asking somebody to join them during their most vulnerable moment. Deku’s pup catching his scent along with Deku’s.
“The pup will be able to smell me. He might bond… he might think I’m his sir.”
“I’m aware.”
He isn’t even the pup’s biological father but he…
“Where do you want me?”
He wants this so bad.
Deku gives a sigh of what could only be described as relief and gestures for Katsuki to join him in the nest. He tugs off the bulkier and deadlier parts of his costume, before moving to join Deku.
He lets Deku braces his weight against him once more. Nose coming to rest against Katsuki scent gland and greedily breathes in his scent.
“We’re going to need to talk about this. Maybe not now, but defiantly after.”
Deku gives a breathy little laugh. Body tensing as another contraction takes hold of his frame. “After sounds good.”
“I can’t believe you used the terminology ‘like like’… what are you five?”
Deku giggles like the little troublesome nerd he is.
“You wouldn’t have me any other way, Kacchan.” He scuffs and buries his own nose into the Omega’s unruly locks. He lets one of his hands wander to cradle and rub against the other’s belly. The skin there tight and slick with sweat.
It won’t be long now.
“Yea. Yea, I wouldn’t.”
He kisses the other’s forehead as Deku once more groans and tenses up in his arms. He reminds the other to breathe and whispers words of praise with a constant smile on his face. For the first time since Deku showed up in the dorms looking beaten and smelling of a another alpha Katsuki feels hope. He lets himself feel the emotions he’s been trying to surpass for so long now.
He hadn’t lost his chance.
In that moment he vows to be the best alpha there ever is. He vows to love Deku… Izuku, and to love this pup with everything he’s got.
He cradles the love of his life in his arms and promises to never let go.
