Chapter Text
An Omega is allowed certain levels of leeway in the school system.
An adult Omega needed to be responsible for handling their life issues in regards to their bi-yearly estrus cycle, known more colloquially as heat. Arranging time off, handling any missing work or home obligations, or maintaining continuous use of suppressants until a more suitable time for their heat are all issues they would face in their lives.
For a teen Omega, there was some wiggle room. Most teachers would be willing to let a week’s worth of classwork be postponed until a more suitable time, and let them stay home or in a dorm room for a week until they could find some form of ‘release’. This was not purely for the Omega’s sake, but also to prevent… Incidents. Like classrooms being scent-bombed, inciting a fight between all the Alphas in a given class. Or worse.
It made perfect sense then, for someone to be in charge of bringing one of the two Omegas in class 2-A their school work for Saturday, mostly notes and homework from the ‘optional’ heroics classes available. While it would make more sense to bring them earlier in the evening, such as when the optional classes let out for the day or even before dinner, handing them before Iida went to bed was better than waiting until the morning.
Iida and Midoriya were both in the same group chat, and Iida knew how late Midoriya could stay up posting HeroTube videos or rambling essays about hero analysis that caught his eye. Surely, as guilty as he felt standing outside of Midoriya’s door at 10 PM with a docket of notes, it wasn’t that unreasonable to assume he could accept them. No need to even get the work done tonight, although it would be proper for a Hero Student to achieve his work well before it was due even with certain… Circumstances.
If only he could ask someone else to take this docket down. If only Yaoyorozu hadn’t turned in early tonight, after wiping herself out with their Rescue exercise. If only Asui and Uraraka hadn’t gone out together for the evening to a movie with a group, and weren’t due back for another hour.
If only Todoroki wasn’t an Alpha as well, and therefore dealing with the same issue he was currently dealing with now.
Iida tried to steady his breathing. The scent wasn’t too strong outside the doorway, just the almost grass-and-petrichor scent that Midoriya carried on average, with just the vaguest hint of something that would be inappropriate to consider. For his very dear friend, who had much more to worry about given the time of year. It would be as rude if someone made a big deal about his rut, even if ruts didn’t take an unattached Alpha completely out of commission for several days. But it was rude nevertheless.
Instead, he was here, docket of notes firmly, tightly in hand, face red with embarrassment, standing outside of Midoriya’s door. Well into the evening.
He really should have settled this before dinner.
Iida knocked on the door, “M-” No, he was not going to stammer, even with catching his breath and noticing how thick Midoriya’s scent was, so close to him. He was proper. He could handle this. “Midoriya! Pardon my intrusion, but as my role as Class Representative, I was tasked with bringing your first docket of school notes in regards to Heroic lessons for the day. I will leave them at your doorway, so you may receive them-”
The click of a lock cut through Iida’s speech.
“Ah.” That broke his concentration entirely. “You have. Unlocked your door.” That was not what was supposed to happen. He was still an Alpha. Midoriya was still an Omega! Didn’t he fear what could happen with having the only barrier between them an unlocked door?! Iida worked through his dumbfounded silence. “It’s only me, Midoriya, I can’t send a Beta classmate or Yaoyorozu in, in my steed, so it’s safest for me to leave.”
“Really, it’s fine,” He could hear Midoriya mumble on the other side, his voice twinged with a slightly strained tinge to it. “I know you won’t hurt me, Iida.”
The vote of confidence was appreciated, but this seemed like a highly suspect time for an act of trust instead of precautions.
“E-Even so, you should practice diligence! You never know when there might be multiple Alphas in an area, and until your estrus cycle eases, it’s still a critical point for you.” Iida said, giving a strong chop of emphasis to the doorway. Where no one could see him, but the emphasis and concern were both there.
“I know, don’t worry… I’ve been here all day,” Midoriya said, much closer to the door than Iida would have anticipated, “And all Hero course Omegas are given birth control shots every month, as part of school requirements… I don’t think Alphas or Beta girls are given the same level of concern, but then again monthly ruts are easier to control and there’s the option for anyone to take birth control in the Hero course, as a general safety feature and to ensure a higher graduation rate for all students involved…”
At least he was in his mind enough to mutter as usual. It was honestly a relief to hear, even if it was one more distraction in regards to the docket. “Well, I’m glad you’re keeping in your normal spirits, despite the circumstances Midoriya!” Iida said, giving a slight salute to the ramble. “I will leave the docket here, and make my way out, so you won’t have any concerns-”
“Actually,” Midoriya’s ramble broke in half, “D-Do you want to come in?”
… This was a mistake, this was a massively poor idea. What was Midoriya thinking, what was Iida himself thinking? For a moment, Iida froze, the docket of paperwork and notes dropping to the floor with a scattered thud followed by multiple smaller ‘thwips’. He opened and closed his mouth, neither an admonishment nor a poorly-decided agreement coming out.
“… Ah-” He could hear Midoriya on the other side, starting to panic, “What on earth am I saying?! No, wait, nevermind- I mean, I would like you to come in- But wait, I’m not trying to cause you more stress- man, this would be a bad idea- I’m so sorry, Iida, don’t even think about-”
“I need a moment,” Iida finally said, his brain kicking back after fizzling out for a second from hormones. “I dropped all of your work.” Midoriya’s panicked ramble on the other side of the door stopped, the hallway back to silence besides the sound of the papers Iida gathered back into the folder. Such an unorganized mess, but Midoriya would have the time to decipher the mess tomorrow thankfully. He would organize them himself, but an expedient answer was necessary here.
As soon as he gathered the work, Iida gathered his courage, taking a second to smooth out wrinkles along his school track suit and adjust his glasses. Not much he could do about the blush he was sure was staining his cheeks, his face had been red since he realized he’d have to drop off the docket himself and the offer to enter Midoriya’s room while he was in heat did not reduce the redness.
… Oh, this was a poor decision. This was a very poor decision. He should just leave the paperwork behind and apologize, and deal with the fallout later, even if Midoriya wanted… Him… In his room.
“I’m going to enter now,” Iida’s voice didn’t carry the same volume as before, closer to a whisper. Last thing he wanted was to stir Shinsou or Aoyama’s attention, as he entered.
The door was indeed unlocked.
Immediately, Iida’s attention was drawn to the wall of All Might posters and the veritable shrine of All Might figmas and All Might merchandise lining Midoriya’s desk. Yes, this was appropriate. A facsimile of Midoriya’s father figure staring down at him in decaduplicate, judging him for this indiscretion. The blush remained firmly on his face.
“Um-” He looked from the wall down to Midoriya. Oh dear. Estrus caused a physical spike in temperature in the majority of Omegas, hence the colloquial term ‘heat’, but he didn’t expect Midoriya to be down to… An open button-down shirt. And shorts. Perhaps. It was hard to gauge, considering the pillow Midoriya held at his waist, an attempt of maintaining some level of modesty between the two. His face was equally red as Iida’s, going right down to his visible collarbone.
… Midoriya’s neck looked so smooth, throat and chest exposed. Iida’s hands balled into fists, his shoulders tensing. No, he was not going to think of that, he was not going to linger in the heady scent of petrichor and cut grass and skin, Midoriya’s scent, just blanketing this room and soaking into Iida’s pores and bones. He was proper. He was on a mission and he was going to be a good friend who would not take advantage of his vulnerable Omega friend, with his six-pack and strong thighs visible behind his courtesy pillow.
“Yours!” Iida belted out, immediately bowing with the docket extended as far as his arms could reach, “This is yours! For you!”
“Ah… Thank you,” He could feel the docket gingerly picked from his hands, “The notes from today, right? O-Of course my heat would come, just as we’re starting up on building-based rescue operations, I was really looking forward to that lesson.” Midoriya sounded more aware than he expected, thankfully. He could hear him thumbing through the papers, “Are these your notes?” Midoriya asked.
“A copy.” Iida said, voice strained. He kept the bow going, especially when he felt himself growing hard. No, self-control. Maintain self-control, keep that under lock, he would relieve himse- take a cold shower, and not think of Midoriya as he did so. “You don’t have to worry about returning them,” he said, reflexively chopping even while still bent 90 degrees.
“… You don’t have to stay like that, you know,” Midoriya said. He could feel the heat of a hand coming close, a centimeter away from stroking his cheek but thinking better of it. Still, the hand hovered, Iida holding to reflexively not draw himself against Midoriya’s warm palm.
Normally, his pants felt this painfully tight around his shins. That shower would be such a good idea right now. Or any sort of relief- no, proper mind goddamnit, he had to hold himself to higher standards.
Iida pulled himself back up, still bending a little to try and hide his hardness in any sort of way. Why did all the rooms need to be so brightly lit, anyone with working eyes could see his reaction. He almost shut his eyes in shame, would have done so if not for the warm touch of Midoriya’s hand along his cheek.
“I’m really sorry,” Midoriya said. There was a look of deep-seated worry in his eyes, just the slightest of tears. This had to be Iida’s fault, he knew it, and his hands betraying him to go from firmly at his sides to bent and reaching for Midoriya’s waist was not helping. “I don’t mean to make you this upset, I really don’t. I just can’t handle the week alone, like this.”
“It’s not you-” Iida squeaked out, a tremble along his spine. Midoriya felt so warm to the touch, the heat of his hand pouring into Iida’s cheek, the faint fingertip touches of Midoriya’s hips pouring into his hands. He could feel the power thrumming under Midoriya’s skin, smell his scent so deeply and richly, resolve breaking with each centimeter of contact. “It’s not your fault. I’m… I’m scared. I don’t want to hurt you.”
“I know, Iida-kun,” Midoriya smiled, a sense of ease coming up with each touch. Midoriya got up on his tip-toes, leaning up to Iida’s face. His lips ghosted over Iida’s, “I know you would never hurt me. I know you’re safe, and I can trust you to treat me well.” Midoriya’s lips brushed against his, his voice a whisper, “Please… Stay the night, with me.”
… There was not enough resolve in the world to say no to this.
Their first kiss was cautious, gentle and tender. This was happening. This was going to happen. Dear god, he was going to… Even the mere thought of Midoriya on his back, gasping and crying out his name, those thighs wrapped tightly around Iida’s waist was almost too much to bear. Those tender kisses deepened, Iida’s tongue darting into Midoriya’s mouth eagerly.
The pillow fell, Midoriya wrapping both arms around Iida’s shoulders to pull him close. He mirrored the action, gripping Midoriya’s hips tight and pulling him flush against his body. God, even through his tracksuit, he could feel Midoriya’s own hardness as the contact of their hips drew a shuddering gasp from both. “B-Bed,” Iida stuttered out, breaking their kiss enough to speak, “It’ll be easier if we’re on the bed.”
Midoriya’s eyes looked hazy, lips slick with their saliva as he nodded. The open shirt slipped off his shoulders as he scrambled up, legs spread in anticipation of Iida. From here, he could see more clearly what Midoriya was hiding behind his pillow. Not merely shorts, but dark boxer-briefs, soaked through with slick and pre-cum. Iida wanted to just tear them off and sink down to his hips, hard and fast enough to draw cries of pleasure from Midoriya.
No. Caution. This was Midoriya’s first time, this was Iida’s first time, and he wanted to make it worthwhile for Midoriya.
Any other time, he would have carefully folded his track suit and placed it away properly. Tonight though, with Midoriya watching him intensely, practically naked save for a thin layer of cloth? It was a haphazard toss, the jacket and pants barely making it onto the desk chair while the shirt and boxers went god knows where. It didn’t matter, not with scent and heat and Midoriya flooding his mind at this rate.
The glasses stayed on. He wanted to see everything clearly.
Iida climbed up, gripping Midoriya’s legs to straddle against him. Every inch of hot skin made his blood race, his mind overloaded with thoughts, claim him, mark him, breed him, just unyielding thirst at the very sight and feel of his body against his own.
As he bent down for Midoriya’s neck, Midoriya’s hand blocked him. Oh. That got a cringe from Midoriya, a look of concern drawn across his face. “Oh- Sorry, too far,” Iida mumbled, pulling back to get a better view of Midoriya’s face.
“I’m sorry. I’m just not ready to be m-marked,” Midoriya said, voice laden with guilt. “I mean, I know I’m asking for a lot… What kind of person am I, asking for s… For this, when I’m not ready to be yours-”
How could he blame him? Marking was a commitment, a promise to be together for as long as possible, and meanwhile they were rushing into having sex! Iida… Wasn’t going to lie and say he didn’t want to bite down on Midoriya’s virgin neck, leaving an impression for anyone else to know exactly who he was with, but he also wanted to make this better for Midoriya.
He didn’t want to hurt Midoriya. Not during this.
“It’s alright,” Iida said, sympathetic and gentle in his tone. He leaned up, kissing Midoriya’s cheek before an errant tear could run down. “Really, it’s alright. You need this,” At this point, even Iida needed this, he didn’t ever remember being this hard in his life, “We can stop with whatever makes you comfortable.”
“T-Thank you,” Midoriya smiled, shutting his eyes as he pressed his forehead against Iida’s, “I knew I could trust you with me…”
… If this is how the night would end, this was acceptable. The feeling of Midoriya’s heated body against his, Midoriya’s face pressed against his, sharing the same breath and scent. As much as Iida’s own veins were throbbing, just being able to give relief via physical contact felt amazing, as much as kissing those warm lips.
“I mean,” Midoriya added, voice barely more than a whisper, “I… Really do want you to fuck me, even if marking is too much...”
He’d be horrified at the language, if he wasn’t so relieved at the chance to fuck Midoriya.
Iida thumbed at Midoriya’s boxer-briefs, a slow drag down Midoriya’s legs. “You’re wearing too much,” He whispered into Midoriya’s lips, a gentle kiss as he started to drag lower along his body. He left his neck alone, avoiding the temptation of just one bite, but the expanse of his chest, his inner thighs and abdomen were still open to his touch.
A nibble along Midoriya’s pecs drew a whimper from his lips. Glancing touches along his inner thighs, barely brushing close to his cock and slit drew out a shuddering gasp, an arch of the back. Even these gentle, ghostly touches were leaving him wanton in Iida’s grasp, hips twitching and trying his best to hold back moans of pleasure. The image of how hard he’d gasp and pant when Iida finally entered, begging for his knot, just lingered in Iida’s mind.
He leaned against Midoriya’s lower torso, watching his face carefully. Even at this angle, he could see the beads of pre-cum running down Midoriya's shaft, the wetness dripping along his slit. “Have you…” Iida asked, the question punctuated by a stroke along the lips of the slit.
Midoriya gasped, a tremble running along his spine, “Oh-” He tried to steady his words, eyes screwed shut from just the overwhelming sensation. It was cruel, but Iida found himself tracing along the edge of the opening as Midoriya tried to speak, running from the very back of Midoriya’s testes to the very end of the slit and back upwards again, slick and hot from just the heat already. “Only… Only with my f-fing-Ngh-”
That wouldn’t do, not for his first time. It could hurt without proper foreplay, and the last thing he wanted to do was give Midoriya a bad time now.
“Hah-” The press of two careful fingers inside sent a shock along Midoriya’s body, his eyes flying open at the insertion, “-Ah, Tenya!”
Tenya. That drew a grin from Iida, being able to get Midoriya to cry out his name in such need. The fingers curled upwards, pressing against the tightness within. His motions were careful, focused and firm. Of course, his cock would be too big on it’s own, so he had to prepare Midoriya for it. And if that preparation was enough to make his hips twitch in the rhythm of each motion in and out, to get Midoriya to clamp a hand over his mouth to try and muffle the desperate moans each flex and stroke drew out, that was more for Iida to savor.
“You feel amazing, you know,” Iida said, thrusting deep and twisting. Midoriya’s head fell back on the bed, a sharp gasp of pleasure only muffled by his hands tearing from his throat, “You feel as good as you look, in fact…”
“P-Please… Tenya- Please!” Midoriya pulled his hand away just enough to beg, only for a stroke against a particular point drawing out a cry and a roll of his eyes. Ah, that’s where he’s going to want to aim for, especially when he begins to knot.
“You’ll need to ask properly,” It was clear what Midoriya was asking for, but there was something satisfying leaving him begging like this. Especially stroking along that spot within, leaving Midoriya bucking back into his hand. “I don’t know what you mean by please.”
“Please- Ah, please fuck me-” His hips twitched in the air, cock twitching with each touch within. Iida was tempted to lean over and take the head in his mouth, but he was worried about finishing Midoriya too quickly. No… He wanted to draw out his orgasm, get him coming beneath him.
And Midoriya was asking so nicely too.
Iida withdrew his fingers, one last stroke along the edge of the slit to draw a little last shiver from Midoriya. Gripping his legs, he pulled back up to be face to face with him, staring Midoriya right in his flushed face. His pupils were blown out with wanton lust, a line of saliva running from his mouth. Images he desperately wanted to memorize, keep in his mind for the rest of his life. Moving one hand from Midoriya’s muscular thighs, he adjusted his cock, pressing the tip against the slit.
Even with pressing the head in, it was almost too much. The heat soaked through Iida’s entire body, that glorious heat and tightness. He bit his lip to hold back a gasp, catching Midoriya’s hands flying back to his mouth to suppress a wanton moan. Every centimeter forward left him seeing stars, his grip on Midoriya’s thighs tightening. In the back of his mind, he worried about leaving bruises and marks, but he could barely keep it together to not sink his teeth into his neck or buck his hips flush against Midoriya in need.
Time, cautious, careful time was needed, drawing out every little twitch and shudder from Midoriya with each motion. God, how could he last doing this? The pleasure was burning down his core.
“Mmmnh-Tenya-ah-” Even with as barely coherent as Midoriya was, he still cried out his name from behind his hands, eyes clamped shut with overwhelming sensation. Damn, why did he have to be surrounded by other dorms, he just wanted to pull Midoriya’s hands away and enjoy every octave that spilled from his lips.
Their hips pressed together, both shivering at the full contact. The tightness surrounding Iida left him reeling, panting over Midoriya. The scent, the heat, the tightness, everything of this felt like too much of a dream if it wasn’t for how overwhelming the sensations were. “You’re… Amazing, Izuku…” He gasped out, “I’m… I’m going to move now…”
Midoriya’s back arched hard as he thrust, deep and earnest in every motion. The squeal of pleasure was only suppressed by his hands, his watery eyes rolling back with each motion. The pleasure was pooling up fast, drawing harder, quicker thrusts from Iida. He wanted to be more careful, but seeing Midoriya so wrecked, so desperate, knowing it was his fingers and his cock that left him shivering with intense need made Iida want to fuck him even harder.
There was no way either of them were going to last long like this. Even if Midoriya wasn’t completely unraveling from his heat already, the intensity was too much, too soon.
Still, he had to hold on, get Midoriya to finish first, and finish hard beneath him. With a shift of his hips, Iida angled upwards at that point that left him begging and moaning his name, rewarded with tight gripping surrounding him and Midoriya’s legs wrapping around his waist to pull him in deeper.
“I- I can’t-” Midoriya whimpered, hands moving ever so slightly away from his mouth, “S-So close, I can’t-” His cock was dripping against Iida’s abdomen, gripping so tightly inside even as Iida’s cock swole and started to knot up.
“It’s… It’s alright-” Iida felt like he was unraveling, leaning in to kiss Midoriya’s mouth, a hand wrapping around Midoriya' cock. His words were punctuated by sloppy wet kisses, more tongue and lips than anything proper, “Let go, Izuku- I’ve got you-”
The rush of hot come along his hand and against both of their chests, Midoriya’s mouth clamping against Iida’s to suffocate one scream of pleasure was enough. He was drowning in sensations, his own orgasm smashing hard into his brain, draining hard within Midoriya’s slit. He was flush tight to him, hip to hip, knot deep within and drawing overstimulated shivers from Midoriya with each touch. Iida could feel Midoriya’s arms wrapping around his shoulders, gasping hard at every new sensation.
His veins felt like sparks, like a train that slammed into a wall. Their lurid kiss kept up as hard as the knotting, gasps and moans muffled between their tongues.
As the sparks ebbed down into embers, Iida carefully pulled back. His glasses were streaked and knocked askew, but he could see the mess he made of Midoriya. Streaked with semen, face a mess of tears and saliva, still shivering in his own afterglow, panting from sheer overwhelming exhaustion. Every inch perfect, especially Iida knowing he did this, and brought him to that brink of pleasure.
Iida wiped Midoriya’s cheek affectionately. The smile Midoriya gave, eyes focusing again to look back up at him, just added to that delight. “T-Thank you,” Midoriya whispered.
“I should say the same thing,” Iida said, smiling right back, “I meant it before… You’re amazing, and you feel incredible.”
“You… You too, T- Iida,” Midoriya said, quickly correcting himself. That… Really felt like a conversation they should have.
Later. After a shower and some sleep, and certainly after getting to cling to each other, still feeling the ebbing pleasure of the knot loosening from within Midoriya.
******
It wasn’t the morning dawn that startled Iida, as he woke up.
Rather, there were two factors: one, it was much brighter than his preferred wake-up time of 6 AM, and two, there was a lack of a morning alarm ringing.
He looked up, wondering if he had forgot to reset his alarm, or perhaps knocked it off his bed’s shelving frame while he slept, considering how… Incredibly rigorous and lewd last night’s dream had seemed to him.
Looking up, his curtain looked… Wrong. Instead of light blue, it was more of a mash of blue, red and… Possibly white? It was hard to tell without his glasses or contacts, especially in the blurriness of the morning sun. Iida reached up, grabbing his glasses from the bed shelf.
The first thing that caught his eye was the ever-joyous face of four All Mights.
That was. Not a shelf of extra pairs of glasses. Or books. Or a computer desk. That was a small flotilla of All Might merchandise and vivid candy-colored posters, staring right back at him, grinning at him, judging him. It felt wrong to see All Might and feel a sense of dread, but the sight was enough to know that his lewd dream was very much real.
Midoriya rolled over, pressing against his bare chest. Ah. He was naked. He was naked, and Midoriya was also very much naked, considering the warmth of his skin pressing against Iida’s. A tiny part of his mind relished the feeling, even as the rest of his mind was screaming in panic, at the realization of what happened last night.
“Oh,” Iida said, “Oh hell.”