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‘I want beef jerky’ is the message that chimes on Bakugou’s phone as he walks into the grocery store, rolling his eyes as soon as he reads it while he grabs a cart to start his journey walking up and down each aisle.
Maybe if it was still early on in their relationship he’d give in, not knowing better, and get the Omega whatever he wanted when his heat came on. Beef jerky, bacon, sports drinks dyed unnaturally bright colors, anything and everything he wanted to alleviate some of the ache of going through a heat, but Bakugou is older and wiser now. He’s grown tired of waking up to Kirishima’s nest smelling of processed meat sticks that he’d gnawed on and then forgotten ages ago.
So, it’s easy to respond back ‘no,’ and even easier to ignore the rapid fire pings of whining that immediately follow. Easy to turn his phone on silent so he can finish the shopping quickly and without distraction, knowing that no matter what his Mate thought he wanted, he’d be grateful and happier when he came out of his heat days later hydrated, healthy, and body not filled with enough sodium to kill a cow.
Bakugou picks up bottled water, yogurt drinks, and plenty of fruits and vegetables to make smoothies for easy digestible meals. He gets chicken broth and eggs for protein, but is still nice enough to pick up a carton of ice cream and a few popsicles for Kirishima to soothe his aching teeth.
Over the years, Bakugou has figured out how to be a good Mate, a proper Mate, even if other people might not think so.
Two Omegas don’t go well together, they like to say. There will always be some instinctual need deep down that they can’t help each other with. The urges of the pack, of being knotted, of having a dominating Alpha or Beta to make sure they are steered in the right direction.
Growing up, Bakugou always heard he had the right looks for an Omega and as soon as he found a good Alpha that could put him in his place, he’d have the right temperament too. He’d be a note-worth Omega, a perfect Mate, if he only accepted the right offer.
And Kirishima, well, Kirishima was a little too big, his quirk a little too rough, his looks not exactly ‘Omega’ enough, but he had the right personality. He was nice, friendly, and loyal. He’d make some Beta or Alpha incredibly happy one day.
They both heard it all, over and over, how one day they’d find their perfect match. They’d get bitten, be Mated, and have a few kids. All in good time.
Bakugou would rather bite his own tongue off.
He never wanted to settle down. He never wanted to know what it felt like to be under some Alpha– slobbered over, dripping with sweat and pheromones that made him want to gag. All that traditional classic romance, all that Hollywood fairy tale bullshit, Bakugou never wanted it and didn’t understand why anyone would ever want something like that.
And then he met Kirishima.
Not that their relationship was some love-at-first sight sorta thing, no. It was gradual, a friendship he didn’t even know he needed until suddenly he found himself looking over his shoulder to make sure Kirishima was close behind him. They weren’t dates until they were. Until every time Kirishima dragged him out to go to the movies or arcade or festivals with their friends it became less ‘class’ and more ‘us’.
It became Kirishima not letting go of his hand after he grabbed it. It became Bakugou forgetting to return Kirishima’s towels or shirts when they got mixed up in his laundry. It became Kirishima, creating a nest in Bakugou’s bed and Bakugou not minding.
And now, here’s Bakugou, shopping for Kirishima’s heat that arrived only hours ago and is still settling in. Here he is at the check out of the grocery store telling the cashier to give him a moment to run back and grab a pack of thick cut bacon for when Kirishima’s heat finally broke and Bakugou could cook them a celebratory breakfast, no matter the time of day or night.
He is weak to that shitty haired idiot and, by now, he wasn’t too stubborn to deny his love.
When he arrives home to their apartment, all groceries balanced in one arm while the other struggles to get the door unlocked, he knows Kirishima is still coherent. At the door, he can’t smell Kirishima coming through into the hallway just yet, but as soon as it swings open he becomes very aware of the Omega tucked away in the bedroom down the hall.
If he was an Alpha or Beta, Bakugou might have dropped the bags at the door, breaking the eggs he just bought in the process. He’d stalk down the hall to go scent the heat stricken Omega. He’d shove him onto whatever hard surface was closest to suffocate them both in the overwhelming smell of pheromones, to hell if Kirishima’s nest was properly done or not.
But he doesn’t. Because he knows better, regardless of his stomach tightening and the little voice in the back of his head calling out ‘go’ , he’s controlled. Bakugou sets down the groceries, putting away anything that needs to be in the fridge or freezer before calmly walking down the hallway to check on his Mate.
In the time since Bakugou last saw him, Kirishima has dragged all of the sheets, blankets, and pillows from their bed onto the floor. The mattress is half off its frame awkwardly leaning on the ground, acting as a make-shift wall of sorts to close off the corner of the room Kirishima has dedicated to his nest.
Bakugou never understood his desire to make nests on the floor when there’s a perfectly good bed to use, but then again, Bakugou has never understood the desire of nests in the first place. It’s one of the ‘bad’ traits people would always brand him with, claiming he’d develop the need and urge to make one when he finally had a kid, which has only ever made him more resentful of the idea.
Kirishima, on the other hand, is good at nest building. He takes everything soft from around the house to cushion the floor, builds up walls with various furniture he rearranges and throws sheets over top like a child’s fort to keep the nest dim and all their scents inside. He pads every wall with their clothing, dirty or clean, tucked into crevices so no matter which way he rolls he’d always be able to smell both of them mingled together.
Kirishima is good at nests, so Bakugou figures he didn’t have to be. Kirishima could take care of his lacking.
“Hey,” Bakugou calls out while standing in the doorway. He catches his Mate’s attention as he’s focused on beating a pillow into the perfect comfortable shape. “How’re you doing?”
When Kirishima finally looks back at him, Bakugou can tell his cheeks are flushed red and his eyes aren’t entirely focused. He’s still looking at him, smiling where he kneels instead of jumping towards him. He’s still sinking into it, still has a little more time to go until he’s fully enwrapped in his heat.
“Okay,” Kirishima answers, sounding more tired than strained. He still has his clothes on, boxers and a light cotton shirt, neither of which slick or sweat stained yet. “Did you get my beef jerky?”
Bakugou rolls his eyes, walking over to squat down beside Kirishima. He pushes his hair out of his eyes to feel the warmth of his forehead. “You know I didn’t, bought you bacon for after instead.”
“Bacon?” Kirishima’s attention easily shifts. “For dinner?”
Present, but not listening.
Bakugou moves his hand down to caress Kirishima’s throat; He strokes slowly downward until he gets to the swollen gland right at the crook of neck and shoulder, pressing against it gently to feel how tender it has grown. Oil seeps out over his fingers. Kirishima groans, letting his neck fall to expose the gland further, a small whine leaving his lips as Bakugou strokes and presses.
Bakugou pulls his hand away, resisting the urge to suck his fingers into his mouth. “Finish your nest. I’ll be back in an hour to take care of you.”
There’s a small whimper that nearly calls him back, but Bakugou manages to escape the bedroom before both of them get distracted and succumb to the need of Kirishima’s heat.
Just to be sure, Bakugou closes the door behind him, ear pressed to the wood for a second to make sure he hears the rustling of pillows again to know Kirishima’s gone back to his nesting, before he too heads back into the kitchen to prepare their meals for the next week.
It’s mostly simple grab-and-go thrown into tupperware he can pull from the fridge and feed them both without much effort. He gets a pot on the stove to start simmering chicken broth with veggies thrown in, something easy for Kirishima to sip in between waves that’ll keep his energy up and body temperature level. He makes hard boiled eggs and peels them, washes fruit to slice and put into containers.
He makes sure everything is easily accessible, put away, and the kitchen is clean before letting his nose lift up to scent the air. He lets his head turn toward the smell seeping into the kitchen from the hallway, the smell of pine trees and bark and wet earth that he’s heard so many others describe as ‘unappealing’ when all he could ever imagine is a cool night in the woods laying out among the stars.
He finds it so comforting and has never understood the desire to have someone smell like cotton candy. The very idea makes Bakugou’s teeth itch, makes him think of cavities and his tongue hurting after so many sweets. Kirishima’s scent is deep and fresh, it leaves him wanting to hug him from behind and push his nose right into his neck to keep it close at all times.
It’s perfect, rich, and Bakugou easily follows it out of the kitchen, back down the hallway to their bedroom, slowly opening the door to hear the Omega cry out before he can even see him.
In the hour it took for Bakugou to finish their meals, Kirishima had finished his nest. He’s also stripped out of his underwear and shirt, now sprawled naked on the floor where Bakugou can only see his feet sticking out of the makeshift fort where he’s panting and calling for relief.
Bakugou uses the last bit of will power he has to keep calm enough to set aside the water and snacks he’s brought with him before pulling off his own clothes, listening to his Mate grow louder and louder as each article falls to the floor, letting the full force of his own pheromones leak out into the room.
He falls onto his hands and knees to crawl forward into Kirishima’s nest, making sure to not disturb any placements of clothing too much. “Ready for me?”
Kirishima is laying out with his back against the corner of the mattress he’d pulled down, giving himself a sturdy place to rest as he now holds out his arms for Bakugou to fall into. “Missed you, missed you,” he says. “Thought you were bringing bacon.”
“For later,” Bakugou reminds him, knowing that it won't matter as Kirishima will forget about his desire for bacon very soon. He lays next to Kirishima, the other Omega turning to hold him, pressing their naked bodies together which already felt warm and tacky with sweat.
With Bakugou now right next to him, Kirishima purrs softly, leaning in to practically smash their faces together, ever the brute even during a heat. He’s not delicate in his scenting, headbutting Bakugou in his haste, grabbing his face, rubbing their cheeks together, back and forth until Bakugou is sure their skin is both irritated red.
There are times after heats when people wonder if they had called on an Alpha to assist them because of all the aggressive bruises and marks left behind. Clearly, the idea of an Omega being so rough never crossed their minds. Bakugou always liked how Kirishima couldn't contain himself. How he’s rough and aggressive while still being so caring. How he wants so badly to scent he ends up marking Bakugou in awkward manners, unaware of the weight he throws or the force at which he rubs their noses together. Even when he comes out of it apologizing for the bruised skin under Bakugou’s eye or for his ears being covered in little bites.
He doesn’t object in the slightest, instead turning his head to let Kirishima gain better access, hearing his Mate chirp in appreciation as he shoves his nose into his neck, rubbing while holding him a little too tightly so he can smear his scent everywhere and lick across Bakugou’s scent glands. He makes sure they smell entirely like each other before finally pulling away to breathe again.
“How are you feeling?” Bakugou asks as soon as he gets the chance, trying to push the hazy arousal brewing in his gut away as Kirishima continues to paw at him.
“Warm,” Kirishima pants out the word. His hands move to Bakugou’s, grabbing at him, pulling until Bakugou’s palm cups his crotch. Kirishima’s dick hardens against the heel, whining softly as he grinds against him. “Touch me, touch me, Katsuki–”
Bakugou hushes him, wiping the sweat from Kirishima’s brow with his free hand. He cups his cheek gently. “You know I’ll always take care of you. Hold on to me.”
Kirishima is shaking as he nods, holding tightly to Bakugou’s shoulders, listening to his Mate. He finds it easier to do exactly as he’s told then think about its validity, knowing full well Bakugou will do exactly as he’s said– take care of him.
Two fingers slide down, parting his slick-covered folds. With just those movements, Bakugou can feel how wet Kirishima already is. It clings to his thighs, wetting his pubes, making every little move glide and sound perverse. Kirishima’s grip tightens as both fingers find his hole and slide in.
Bakugou purrs at how easy it is, sinking into his Mate. “Could you not wait for me? Had to play with yourself before I could get my hands on you?”
There is no attempt to hide it, no attempt to lie as Kirishima nods again, frantic, open and honest, wanting nothing more than his Mate to stuff another finger inside him. “Yes, yes, couldn’t…couldn’t help…I was so hot. Wanted…”
“Yes?”
Kirishima jumps, the two fingers inside his cunt spreading out wide. His cock drools, Bakugou presses against it harder. “Wanted to be ready for you!”
“Liar.” Bakugou moves down to bite gently at Kirishima’s cheek, mouth moving across his skin, nipping to leave patches of red in his wake. “You’re just greedy. Couldn’t help yourself.”
His Mate simply whines, hips thrusting, trying to get Bakugou’s fingers deeper. “You’re being mean.”
Bakugou bites down a little bit harder this time, feeling how Kirishima’s entire body jolts under his. “You like it when I’m mean.” He shoves his fingers in harder, just how Kirishima wants, fucking him with them harsh and rough until he’s shaking and shaking and–
He pulls away, sits back. Kirishima tries to chase after him, pouting, crying out how he was so close, how he needs it, his body burns, aches, but Bakugou simply pushes him back down as he crawls into a new position.
Even if Bakugou is mean, he’s not cruel. He’d never leave his Mate wanting too much, but at the same time he’s also getting hard and wet; he wants a little bit more himself. Plus, he’s been with Kirishima long enough– he knows what the other Omega really needs.
It’s a little bit awkward in the confined space of the nest to get on his belly in between Kirishima’s legs, trying his hardest to not knock any precariously placed items loose. His feet dangle just outside of the nest as he curls his arms around Kirishima’s thighs and hoists him closer.
Kirishima instantly stops crying.
“Still gonna complain?”
He quietly shakes his head.
Bakugou smiles, breath puffing against the slick, swollen, lips of Kirishima’s cunt. “Good.”
He dives in without hesitation, mouth sucking at Kirishima’s cock for three pulls before Kirishima’s chirping frantically, hands shoving at his head to go down to the true prize. Bakugou follows his guiding hands without making a fuss, slurping up every drop of slick that coats Kirishima’s pussy. His tongue follows the trail down to his leaking hole, thrusting inside to hear how the Omega above him moans, always unable to contain any noise with Bakugou slobbering all over him. His thick thighs squeeze at Bakugou’s head, crushing him under solid muscle as he crosses his legs, not wanting him to move.
It’s not the first time Bakugou’s thought suffocating in his Mate’s pussy would be the perfect way to go, not when Kirishima sounds so good and looks so pretty with his head thrown back and his hands tangled in Bakugou’s hair.
Thankfully, that’s not the case just yet as Kirishima comes only moments later, strung out from his heat and Bakugou’s fingers. His back bows as he shouts his pleasure, squirting messily across Bakugou’s tongue. He drinks it up like a man starved, slurping until Kirishima’s entire body goes limp and he’s free from his thigh prison.
He makes sure to clean up Kirishima’s cock too, tongue dragging over his sensitive skin to collect the little spurts of cum that spilled out, feeling every little twitch of his Mate’s body. He massages Kirishima’s legs, working out any cramps he might have given himself with how tightly his body coiled, fingers digging into muscle before smoothing down to the scent glands at his inner thigh. He smears the pheromone infused oil all over his skin as it oozes out.
“Ready for a second?” Bakugou asks, kissing Kirishima’s pussy that pulses hot and needy under his mouth.
Above him, Kirishima simply nods, still trying to catch his breath. Bakugou gives him one more kiss before rolling onto his knees and crawling to their closet to retrieve round two.
Kirishima never thinks about preparation beyond building his nest, so Bakugou makes sure all their toys are properly cleaned a day or two before Kirishima’s heat hits. He takes his time going through them all, pulling out each and every dildo and vibrator they have for inspection, rolling them over in his hands while, behind him, the whining grows louder when Kirishima comes to the realization that his Mate is no longer beside him.
Bakugou crawls back in as soon as he’s chosen a toy and pulls the harness up onto his hips, groaning softly as he tugs the straps to adjust and feels the well-worn leather squeeze him. Whereas Kirishima’s always enjoyed the strapless toys for both of them to enjoy at the same time, Bakugou’s always appreciated the harness that allowed him to remain level-headed while Kirishima falls apart under him.
He settles in on his knees, staring down at his Mate who wriggles around among his mess of fabrics, legs spread out to display his need with slicked thighs, hard little cock, and his cunt flushed red. If they were having a normal date night, Bakugou would slap it just to hear Kirishima keen, but in heat Kirishima needs more kindness. So, Bakugou simply admires and imagines for a moment longer before guiding Kirishima, flipping him onto his belly.
“Be a good boy for me, Eijirou, and present.”
Even as he turns over, there’s a whine of disagreement that comes from Kirishima, knowing he’s unhappy with having to face away from Bakugou. To appease him, Bakugou looks around the nest to find an article of clothing that wasn’t load-bearing for the integrity of the walls. It takes him a moment to find an old pair of gym shorts that are easily tugged free and shoves them under Kirishima's nose. Instantly, the Omega is pleased, hands grabbing at the fabric to rub his Mate’s dirty scent all over his face.
“There you go,” Bakugou smiles, shaking his head as he watches Kirishima instantly relax and raise his hips, legs spread just enough that his lips part, giving Bakugou the perfect little peak at his sticky hole. “What a good little Omega for me…”
He purrs, giving Kirishima the praise he needs as he slides his fingers back and forth between his dripping folds, gathering as much slick as possible to lubricate the dildo standing proud and held firm by the harness. It’s thick and long, curving upward at the end. He rubs it until the smooth silicone is shiny and shuffles forward behind Kirishima to get in position. He pushes the tip of the cock between his legs, slowly rubbing it back and forth, watching it part his lips, watching it grow wetter and wetter until slick is dripping from it and Kirishima’s patience is growing thin. He wiggles his hips and rolls his ass back, trying to get Bakugou inside.
“Desperate.” He gives a short laugh as if he’s not just as wet between his own legs. “All you want is my cock, huh?” Kirishima’s body trembles as Bakugou grasps onto his hips, massaging his skin, watching as his ass bounces under his hands. “Beg me. Come on, Ei, tell me how badly you want this Omega to ram your pussy.”
The look that Kirishima gives him when he turns back is comical and pathetic. His eyes are blown dark with tears collecting between thick lashes, cheeks flushed, dirty gym shorts hanging out of his mouth, damp with drool. They fall when he finally manages to speak, voice cracked. “P-please…Katsuki…Omega, Mate…”
A shiver runs up his spine as Bakugou takes hold and, with a growl, slams his hips forward until he hears Kirishima squeal.
It makes Bakugou snap, the sound of his Mate coming undone because of him, having him beg for him, wanting him and only him instead of some knot-headed Alpha that would never be able to make him feel this good.
The dildo makes a rhythmic ‘shlick’ sound over and over as Bakugou pounds into him, listening to how wet Kirishima’s body is for it, being stretched open on a fake cock that drives him wild. Bakugou can feel the heat building between them. He smells the desperation in Kirishima’s pheromones as he claws against the crooked mattress and presses back, trying to make Bakugou go deeper. Even as his hips meet Kirishima’s ass in a harsh, flushed, press, there is no room to give.
It’s how Bakugou knows Kirishima is about to come, watching his body start to crave even more, so when Bakugou pulls back and doesn’t return right away, Kirishima whips around with a snarl that Bakugou’s prepared for.
He bends over to give those pouting lips a wet kiss, feeling him soften as he pulls away again. “I’m just gonna grab your favorite inflatable knot–”
“NO!” Kirishima cries out. He grabs him, pulling him back harshly before Bakugou can get a toe outside of the nest. “Your knot, need your–”
Bakugou feels his heart flutter. His core throbs. “You sure?”
Kirishima nods frantically. “Yours, yours, need yours, only yours, please, Mate!”
“Okay, okay.” Bakugou doesn’t ask again as he scrambles to undo the harness and throw the used dildo to the side, getting right up behind Kirishima before taking one thigh tightly in his hand and pressing the other to Kirishima’s cunt. “I’ll give you my knot, baby.”
It’s a steady press of his fingers at first, narrowed as they sink into his gaping hole. He’s stretched nicely and dripping with slick, so it’s easy to keep moving until the width of Bakugou’s hand makes Kirishima gasp. Still, it’s not enough and after just a second of pause, Kirishima is pushing back on his own, forcing Bakugou’s hand deeper into his core until his cunt expands over the widest part of his hand to close around his wrist.
Inside, Kirishima is burning up. He’s soft and hot and wet. Bakugou can feel his heartbeat thumping rapidly like a rabbit’s, his channel squeezing his hand tightly wanting, begging for it, so Bakugou gives him exactly what he wants.
He takes it slow, but doesn’t stop, folding his fingers in while Kirishima’s moan gets louder with his fist a perfect ball inside of him. Bakugou’s ‘knot’ pops, sitting heavy in his stomach.
Bakugou is glad he’s not touching himself right now, otherwise he would come right here and now at the sight of Kirishima’s cunt stretched perfectly around his fist.
“Ready?”
“ Please. ”
The first thrust takes Kirishima’s breath away. The second has him screaming as he finally comes on Bakugou’s knot.
Everything is wetter, easier, as Kirishima squirts around his fist. He drenches them both in slick and cum as Bakugou pushes harder and further until his arm sinks a little deeper and he very quickly hits Kirishima’s limit with nowhere else to go. Still, he fucks him, pumping his fist back and forth until Kirishima cries out again from another orgasm that has his entire body falling to the floor of his nest, shaking.
It’s only then that Bakugou leans over him and sinks his teeth into the nape of his neck, clenching his jaw until he feels the skin break and tastes the coppery-sweet hormone filled blood on his tongue. Kirishima does little more than moan, too weak and fucked-out to fully react beyond the vocalization and pulsing of his walls squeezing Bakugou’s knot, trying to milk him dry.
Leaning back as he licks the blood from his lips, Bakugou puts his free hand on the small of Kirishima’s back to keep him pinned and steady before continuing. He resumes punching Kirishima’s guts, hammering his pussy until he’s sobbing through one more orgasm that leaves his throat raw. It’s only then that Bakugou finally gives him a break, letting his hand sit inside him for a time, feeling how his insides flutter and pulse around him, scenting the air to smell just how satisfied Kirishima is.
After a few minutes, Bakugou eases his hand out, listening to the poor heat-drunk Omega whimper as his ruined pussy has to stretch a little bit more to pull his knot free. Bakugou stares after him, looking at his gaping hole that pushes out globes of slick and Omega cum. Bakugou licks his lips, wanting a taste, but knowing it would be too much. Instead, he rolls Kirishima back over and crowds around him, rubbing against him so their scents are fully incorporated, the blood slowly oozing from Kirishima's neck getting on Bakugou’s skin as well.
Knowing that Kirishima has been sated, that Bakugou’s been a good Mate, a good Omega, and taken care of Kirishima’s heat, he finally gives in to the ache of his own body.
“Ei…Ei, can I? Can I–”
He shouldn’t ask, but he wants to. That small press of instinct that drives him to want approval beforehand, the small little grace that he gives himself, asking his Mate for the chance to get off.
With a small nod, all that Kirishima can manage right now, Bakugou dives in with a groan, finally able to roll his hips properly and rub their cunts together, cocks pressed and squished, mess sticky between them.
Bakugou’s not even in him, his cock keeps sliding up and down Kirishima’s pussy, catching at his hole, but everything’s too slick and open for him to stay anywhere for very long.
‘I did that, I did that,’ he thinks, pressing down hard against Kirishima, growling loud as he frots against him, their sloppy cunts making them sticky, wet, and dripping in pleasure between them. Bakugou drives towards his own release after giving his Mate everything he wanted. His head is swimming in their pheromones, smelling just how satisfied Kirishima is from being stuffed full of Bakugou’s fist, wrist, his fucking forearm –
“Perfect,” he snaps, feeling his stomach tighten. “So damn perfect for me, Ei. The best fucking Mate–”
Somehow, Kirishima finds just enough energy to lean up and wrap his lips around one of Bakugou’s nipples, sucking hard with the scrape of his teeth. That's the last straw for Bakugou.
He shouts as he comes, thrusting with such force against his Mate he’s sure both of them will be bruised come morning. His pussy gushes slick and his cock spills out cum that only gets smeared into the mess already between them. Bakugou holds Kirishima through it, one hand tangled in his hair to keep his mouth against his chest, the other digging indents into his shoulder where the skin is hardened so there won’t be any lasting damage as Bakugou shakes with little pops of explosions.
He collapses right on top of Kirishima, panting heavily as his Mate rearranges their limbs so they’re mostly cuddling with Bakugou still on top, keeping Kirishima warm and weighed down with the first major wave of his heat over. His warmth is ebbing, they have a moment before the next crash.
Below him, Kirishima is purring. The sound of it is loud, deep, vibrating through them both with the knowledge that he’s a very pleased Omega. Bakugou follows suit, humming softly as he pets his Mate, tired in his own right but knowing he’ll be more than awake when needed.
Somehow, Kirishima finds his lips, kissing him with too much tongue and teeth that only lasts for a few seconds before Kirishima is simply licking his face, following his scent down to his scent gland, perfectly content to lick and kiss that instead of Bakugou himself.
“I’ll forgive you just until your heat breaks,” Bakugou huffs, bending his neck so Kirishima can have more access to explore, feeling how his heart flutters when he hears that happy little chirp in return. “Then, I want a real kiss.”