Archive of Our Own ^beta

The button is inches from the hole and the two will not come together no matter how hard Katsuki tries. He huffs in frustration, the fury rapidly rising as he tries to bend over his swollen pregnant belly to yank and tear off the third pair of pants he’s tried to fit into today. It takes him far too long and he has to brace one hand on the dresser just to steady himself so that he can get the damn things off. This fucking pair fit him perfectly a week ago. He grabs the next pair and tries again. And again.

Hot angry tears suddenly crash down over his cheeks as he loses control over his temper and explodes the last pair of pants to charred shreds. “Fuck!” he screams in frustration, giving up entirely and throwing on one of Eijirou’s oversized t-shirts from the dirty clothes hamper instead. It hangs to his thighs even with the ever-growing bump of his belly. He huffs in deep breaths of Eijirou’s clinging residual scent that saturates the fabric, trying to calm himself  as the tears stream down to drip from his chin. Ugh…why is he such a fucking cry baby these days?! He scrubs angrily at his cheeks and kicks at the nearby nightstand, needing to take out his frustration at the rapid changes to his body on something…forgetting entirely that he doesn’t have his boots on. Promptly, a new wave of fresh tears burst from his eyes as he cries out from the pain to his foot as it violently collides with the sturdy wood. “DAMN IT! Fuck this shit!” he hollers between wet distressed sniffles.

And because life fucking hates him, a sudden strong kick within his belly has him promptly forgetting the radiating ache in his foot and has him hurriedly hobbling to the bedroom’s attached bathroom to relieve himself before his abused bladder bursts. He curses his omega as he’s later washing his hands and looking at himself in the mirror. He has dark circles under his eyes from a lack of restful sleep as he’s constantly tossing and turning, trying to get comfortable while the triplets wrestle for space within his belly and like to stick their feet right up under his ribs. He loves them dearly, but he can already tell that the brats take after him with their incessant energy. 

His cheeks are ruddy from crying and he rubs over his belly where the skin has stretched tight. When Eijirou had promised to fuck him full of a litter, Katsuki had all but begged for it. He doesn’t regret it, but the stories about the joys of pregnancy are a bunch of bullshit he’s decided.

“Rough day, baby?” The sudden deep rumble of his mate’s voice startles Katsuki from where he’d been focused on his reflection, ruminating about the changes to the body he’d worked so hard to achieve as a hero. He glances towards the doorway to find Eijirou leaning against the frame and giving him a soft look. Katsuki is torn between growling at the alpha for doing this to him and running into his arms so that he can get closer to that comforting scent that is rolling off of his alpha in waves.

Before he can make a decision, Eijirou leans up from where he practically fills the entire doorway with his stupidly massive body and strides forward to wrap Katsuki up in big strong arms, lifting his pregnant weight with ease. All of the tension suddenly bleeds from Katsuki in a rush as he’s enveloped in his mate’s scent and Eijirou’s neck notches into his so that their glands can glide together, mixing their pheromonic oils. Relief rushes through Katsuki and suddenly the aches that plague him seem to melt away and his fury dissolves. A soft purr starts to vibrate in his chest as the world suddenly rights itself and his kilter stabilizes.

“What’s wrong, omega?” Eijirou murmurs the words in his low gravelly voice that never fails to soothe over Katsuki’s jagged edges.

“Pregnancy sucks,” Katsuki hiccups, tempted to burst into happy tears that his alpha is holding him. “None of my pants fucking fit anymore,” he whines in a pitiful voice that irritates him even though he can’t help it. More tears threaten to fall. Fucking hormones.

“Awwww, baby. We’ll get you some new ones, ok?” Eijirou placates like it’s the easiest thing in the world, running his hands through Katsuki’s messy blonde strands and scraping his nails over his scalp in just the way Katsuki likes. Unable to resist, Katsuki leans into it, eager for more of the comfort that his alpha is offering.

“Although…” Eijirou purrs. “Love seeing my sexy mate in my t-shirt. Tempted to buy more shirts instead just so that he can steal them.” Eijirou shifts Katsuki in his arms and starts to walk back towards the bedroom, carrying him like he’s precious cargo. Katsuki used to get annoyed, being carried like some damsel in a fairytale, but today the thought is waylaid when his alpha’s scent morphs into arousal. “Fuck, baby…look so hot with my litter in you,” his alpha growls into Katsuki’s hair.

Suddenly, Katsuki’s omega is wide awake and he promptly forgets he was even sad to begin with when he slicks into his boxers at the heat in his alpha’s tone. He likes where this is going and his insides clench over nothing in excitement.

Eijirou leads them to their nest and moves to set Katsuki down. “Now let’s get you all comfortable, baby, so you can take a nap and relax while I get ready for patrol.”  

Before he can stop it a snarl slips past Katsuki’s lips. “What the fuck do you mean nap ?” he hisses.

Eijirou takes a step back with a confused look after setting Katsuki down. “Would you rather read or watch tv, Kats?” he asks in a genuine caring voice. Irritation flares brightly in Katsuki’s gut despite knowing that his dumb himbo mate is trying to console him before he has to leave for work. The slick between his legs and the heat in his core demands something else now that his alpha has unintentionally teased his arousal to the surface.

“Call off today,” Katsuki demands.

Eijirou’s eyes widen in surprise. Katsuki can’t fault him…Katsuki is normally the one who has a steadfast rule against “hooky” days and enforces it ruthlessly.

“Babe–” 

Katsuki clucks his tongue, unable to stop now that he’s on a roll. He wants his alpha’s thick cock in him and now. “Call Fat right now. You’re not going into work today,” he snips out, brooking no room for argument from his mate. Eijirou has more important things to do today…like wrecking Katsuki’s pussy.

“Katsuki, I can’t just–”

“Eijirou.”

Eijirou sighs and rubs the back of his neck like he’s thinking, giving Katsuki an assessing look that just makes more slick drip from Katsuki’s hole. The scent must finally reach his alpha because Eijirou’s nostrils flare as he scents the air and his pupils suddenly dilate. Katsuki glares at him, letting out his full aroused scent and waiting for his alpha to get the fucking hint that he’s not letting him leave this fucking bedroom until Katsuki gets what he wants.

Eijirou’s face suddenly twists into a smirk that never fails to make Katsuki’s boxers wet. Just to hurry his alpha along in his decision, Katsuki silently flops back onto the cushions in their nest and reaches beneath his alpha’s t-shirt. He already knows it’s going to be a struggle to shimmy his boxers down, so he bunches the fabric together on both sides impatiently and lets off small pops of his palms against it. Instantly, the fabric scorches and he’s able to pull the tatters away from himself. He grabs at the hem of the shirt and runches it upwards over his thighs while he bends his knees, planting his feet wide and spreading his legs wide to put his slick pussy on display for his debating alpha.

Eijirou’s eyes narrow on his blatant display and Katsuki can feel that gluttonous gaze scorching over his exposed pussy like a physical caress. He resists the urge to grin, knowing that he now has his alpha’s full attention. “Call in,” Katsuki commands through a growl, wanting to reach down and run his fingers through his folds to really give his alpha a show, but currently the swell of his belly is in the way.

Not breaking his stare, Eijirou pulls his cell from his pocket and makes the call, claiming that a family matter had come up. Of course, Fat gave him the day off. Eijirou never calls in, Katsuki doesn’t allow it unless he’s sick. When the call is ended, Eijirou hastily sheds his clothes, eyes hungry and dark. “Fuck, omega,” he growls crawling into the nest and situating himself between Katsuki’s legs. Katsuki sighs and throws his head back with a groan when the alpha doesn’t tease, two fingers shoving instantly past Katsuki’s dripping pussy lips and into his pulsing hole. His alpha gives a couple of slow pumps to wet his fingers in Katsuki’s juices. “Already so sloppy and wet, aren’t you? Is your pretty pussy needy, baby?” he teases, curling his fingers directly into the spot that makes Katsuki grunt and arch in pleasure. “You need your alpha to stuff your cunt and make you squirt?”

“Fuck yessssss,” Katsuki moans when Eijirou’s finger starts to move faster with practiced motions. He loves his sunshine incarnate mate, but it gets him so fucking hot when that little switch flips in his alpha…turning him into a feral sex god that makes Katsuki cum like a fountain. Eijirou is fucking filthy in bed and Katsuki lives to provoke it.

Eijirou’s eyes are intense as they catalogue Katsuki’s reactions when he crams another finger inside, making Katsuki bow and tense, pussy clamping down over the digits. It feels so fucking good and Katsuki wants more. “Harder, alpha,” he rasps, breaths already strained. He needs his alpha to own him, wants his pussy to ache with the beating it takes.

“Bossy,” Eijirou scolds, but proceeds to clamp a hand on Katsuki’s thigh to keep it spread open while he starts drilling his fingers against Katsuki’s sweet spot and rips a squeal from Katsuki’s chest.

“Fuck, Ei, right there!” Katsuki shouts through his panting breaths.

Eijirou’s lips curl up into an almost mean grin. “Yeah? Right there? Is that the fucking spot that’s gonna make this pretty cunt spray? C’mon, baby, soak the fucking nest for your alpha,” Eijirou goads through sharp fangs. Another finger worms past Katsuki’s entrance and he curses at the stretch as he starts to squirm and tremble at the swiftly building tension. 

“Shit, Ei…p-p-please,” Katsuki gasps between moans and the slick sounds of his pussy. He grits his teeth, head pressing back against the pillow below him as he teeters on the precipice. “Shit. Shit. Shit.” he grunts breathlessly, legs shaking.

“I know it’s in there and you’re gonna fucking give it to me, Kats. Fucking cum for me,” Eijirou snarls and the grit to his voice has Katsuki crying out when it drags through him and pushes him over the edge. He arches under his heavy belly, heels digging into the cushions, but Eijirou slides his palm down to the crease of Katsuki’s leg and shoves him back down as his fingers pummel Katsuki’s squirting hole mercilessly. Katsuki squirms helplessly as his orgasm makes every muscle in his body tense tightly and release all at once, his core vibrating and shooting euphoria through his blood. His eyes are closed as he sucks air desperately into his lungs when Eijirou pulls his soaking fingers free and grips Katsuki’s other leg, shifting his grip to grab both of them and tug them over his shoulders. Katsuki is still lost to the hazy glow when Eijirou slams his cock into his still spasming pussy.

Katsuki squawks at the sudden stretch of Eijirou’s stupidly massive cock that presses in so deep that Katsuki wheezes out a stuttered breath. The moment he’s sunk in until his already formed knot bumps against Katsuki’s pussy lips, Eijirou’s hands are pushing Katsuki’s shirt up over his belly so that he can rub over the stretched skin. Katsuki is due in a week and when Eijirou rubs over the tight skin as if he’s worshiping it, Katsuki groans and clenches down on the cock inside him. “Wish I could keep you pregnant all the time,” Eijirou suddenly mutters, sounding winded.

Katsuki clenches down as Eijirou scratches his nails lightly over the tight skin. Eijirou pulls his hips back and rocks back in with teasing strokes. “So fucking hot…love seeing you fat with my fucking pups, baby,” he purrs, meeting Katsuki’s half-lidded gaze with a predatory expression…one that Katsuki recognizes. It’s the look Eijirou gets right before he fucks Katsuki like rut toy and Katsuki’s cunt drools around his alpha’s cock in response. “If I could, I’d fuck you full of even more right here and now,” he growls as his hips change rhythm, fucking into Katsuki with sharp deep thrusts. “My omega is irresistible all the time, but something about this round fucking belly makes me so fucking hard…makes me want to pop your pussy with so many fucking knots that you’re a dumb drooling mess by the time I’m done with you. My pretty baby can’t be sad when he’s a fucked out mess, can he?”

Eijirou doesn’t even give Katsuki a chance to clip out something snarky when he starts to piston his hips hard and fast. Wet squelches and the sounds of clapping skin are drowned out by Katsuki’s slutty moan. His eyes roll back a little as Eijirou pounds into him and he’s forced to cling to the cushions with white knuckles to keep from sliding upwards from the impacts. His belly jiggles from their movements and he clenches down when Eijirou changes the angle just slightly and his cockhead rams against Katsuki’s sweet spots, immediately tightening the coil. 

Like he can sense it, Eijirou fucks into him like an animal, nails digging in when he grabs the tops of Katsuki’s thighs. “E-Ei,” Katsuki stammers on a drawn out whine, overwhelmed as he’s impaled on that massive cock over and over. “Oh, my god,” he prays, holding on for dear life as he’s railed like he isn’t in the final stages of his pregnancy. This is just what he fucking needed.

Katsuki convulses like he’s been electrocuted when the coil finally snaps and his release sprays around Eijirou’s thrusting cock. “Good fucking boy,” Eijirou grits out between clenched teeth. “God, you feel so goddamn good. Gonna knot this fucking pussy so hard, stuff you with a hot load.”

Katsuki mewls as he’s fucked through his release, but he nearly comes off the bed when Eijirou’s fingers suddenly find their way to his clit and start thrumming over it with firm fast motions, instantly taking him higher in a different way. Oh shit! He’s gonna cum again. It takes only moments for Katsuki to writhe as another release blows through him hot on the heels of the previous one. His eyes cross and tears spring to his eyes just as Eijirou starts to lose rhythm and his hips stutter.

“Knot, alpha!” Katsuki cries out, desperate to feel it while in the throes of ecstasy that is lighting up every nerve in his body and making him vibrate with the intensity. Eijirou’s fingers pull away just before his knot rams against Katsuki’s pussy and forces the opening wide as it’s shoved through the resistance. When it pops in, Katsuki wails as it instantly inflates, blowing his walls outward and presses hard over all of his sensitive spots. Eijirou’s groan is loud and guttural as Katsuki bucks from the pressure inside him, jiggling the knot deeper in him while his walls constrict over it. 

“Fuck, Kats, squeezing so fucking hard. God, clench on it just like that. Milk my fucking knot,” Eijirou hisses and Katsuki feels out of his mind as a gush of warmth starts to splash inside him. Eijirou’s cock rocks with small short jabs, moving the knot and making Katsuki toss his head with whimpers and whines through the overwhelming sensitivity of cumming back to back and then being stuffed with the massive knot. For several moments, they stay there, panting heavy breaths and floating in the pleasure of being joined as Eijirou’s cum bathes Katsuki’s womb.

“Fuck, babe, haven’t cum that hard in forever,” Eijirou murmurs after awhile and all Katsuki can do is grunt in agreement, every limb in his body feeling like jello and his mind floating in cotton clouds. He feels high in that space, so fucking loose and wrung out that a purr of happiness rumbles from his chest. 

Eijirou gives an amused rumble and carefully leans forward, mindful of the knot tying them together and presses a gentle kiss to Katsuki’s belly before he carefully maneuvers Katsuki’s leg over him. It’s more difficult with how large Katsuki is, but he manages and then shifts them both with minimal fuss until he’s able to put them on their sides. Katsuki instantly tilts his neck to the side the moment Eijirou is settled behind him so that his alpha can nuzzle and suck over Katsuki’s gland as per their usual routine. They’ve had years to get this right and everything is quiet and comfortable as they rest. Katsuki feels deliciously full and used, languishing in being held by his alpha who is stroking over his belly tenderly. 

Eijirou suddenly gasps when one of the pups kicks against his hand and Katsuki smirks at the reaction, knowing that his alpha is probably grinning like a fool behind him. Katsuki sighs in happiness. Eijirou is such a good mate and he’s going to be an amazing dad. The man is an overgrown puppy and Katsuki already knows that he’s going to have to put his foot down, because Eijirou is going to dote and spoil their kids rotten. The first sign of a pout or tantrum, Eijirou is going to do whatever it takes to make their pup smile again. Katsuki is looking forward to it. He can’t wait to see their family all snuggled into one big nest where he can keep them all safe and enjoy their little family. He hopes that he’s a good parent. He had his doubts when he first got pregnant, but he thinks that as long as he has Eijirou at his side, everything is going to work out.

Katsuki sucks in a breath when Eijirou’s knot deflates and his cock slips free. Already Katsuki can feel the flow of cum follow and trickle down over his thigh below. He whines a little at the emptiness, but Eijirou just gently shushes him and licks over his gland to distract him. Katsuki relaxes back into him, content to let his alpha dote on him. After the stress of the morning, it feels good to just lie here and enjoy this brief moment of peace.

Suddenly, Katsuki feels a weird little sensation that he can’t describe in his navel area. He can’t pinpoint the sensation and his eyes crack open in confusion. Suddenly, his thighs are being bathed in warm liquid that he knows isn’t slick. He sucks in a sharp breath and suddenly Eijirou is hovering above him, probably sensing the alarm in Katsuki’s scent and hearing his inhale. “What’s wrong?” he asks, concern heavy in his tone. “Did I hurt you, baby?”

At first, Katsuki is silent, processing the shock of what’s happening, but somehow he manages to pull the words forward. “Ei, my water just broke…” he whispers and moves to sit up carefully as a cramp hits him and he puts a hand to his heavy belly. Eijirou is there in a flash to support him and help sit him up.

“Holy shit, really?” he says excitedly.

Katsuki side-eyes him with a glare. “You think i’d joke about that?” he clips out.

Eijirou’s grin is megawatt bright despite Katsuki’s dry response. “Oh my god, let me grab the bag!” he says brightly and practically leaps from the bed to pull clothes on while Katsuki glances down at the spreading puddle forming beneath him. A bubble of excitement starts to build inside him despite the flare of panic. Holy shit, this is happening.

He’s still in a state of shock as Eijirou helps him to his feet and starts carefully dressing him as best as he can. “This is so fucking exciting. We’re gonna be parents. They’re gonna be beautiful, Kats,” he babbles as he supports Katsuki as they work their way to the front door. A smile creeps to Katsuki’s face at the bright and happy smell rolling off of his alpha in waves around them.

Eijirou is unlocking the front door when he suddenly pauses and looks at Katsuki with a mischievous grin that makes Katsuki squint at him suspiciously. “Looks like I fucked the babies out of you instead of fucking more into you,” he pops off, struggling not to laugh.

Katsuki stares at him for a moment and then rolls his eyes at his dumb alpha. “I will kill you,” he mutters. “Let’s go.” Katsuki stuffs down the giggle threatening to rise, imagining telling this story in the years from now. He loves his big dumb alpha.