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Eijirou unlocks his door, toes his shoes off, and drops his bag on the floor just out of the way of the door. Katsuki’s gonna kill him for that later, but right now he’s so tired he feels like he could collapse right beside his bag.
He’d done an early shift today so he could be home for an early celebration dinner with Katsuki and Toshi but maybe that had been wishful thinking. As first time parents, he and Katsuki wanted to go all out for their first father’s day, but they hadn’t accounted for a cranky Toshi who had barely slept through the night. So when Eijirou left for his 6 a.m. shift he was already tired, and now he was absolutely dead on his feet.
Just a little nap, he thought, as he trudged to their couch. His eyes were barely open as he flopped over the chair arm, only to crash land on something that was definitely not their couch.
Seems like Katsuki wasn’t faring much better in the sleepiness department than he was.
“What the fuck, Eiji—” Katsuki thrust his hands from his sides as small explosions thundered from his palms in alarm.
“Sorry, sorry,” Eijirou mumbled tiredly as he sat back a little. He let the hardening he’d put up to protect himself ripple away. “I didn’t see you, babe.” He pressed soft kisses onto Katsuki’s face where he was still scowling, eyelids hanging low because he’d obviously been asleep until two seconds ago.
“Fuckin...Shitty Hair,” Katsuki murmured, still barely on this side of awake. Katsuki hated being woken up under the best of circumstances, so he tended to be a little monstrous when he was sleep deprived. Still, he tangled one hand in the back of Eijirou’s hair and brought him down to his chest, cradling him close as his legs widened to make room for his absolute beefcake of a husband.
“Where’s Toshi?” Eijirou slurred into his chest.
“Sleepin’.”
Eijirou sighed. “I can’t remember the last time we were both awake and he was asleep.” Katsuki made a sound in acknowledgement. “Where’s your shirt?” Eijirou nosed into Katsuki’s bare chest.
“He puked on it. Was too tired to find a new one.”
“Fair,” Eijirou replied. “God, why didn’t anyone tell us that we’d be so tired as parents. I feel like I could sleep for 5 years.”
“Pretty sure Deku and fuckin’ Half-and-Half totally warned us,” Katsuki said. Eijirou couldn’t tell if he was angry or amused. Probably both.
“I’ve been covered in every body fluid possible for a tiny human to produce, and even some I didn’t know were possible,” Eijirou said.
“Yeah,” Katsuki agreed, “I don’t think I’ve slept more than 4 hours consecutively for the last 6 months.”
“But,” Eijirou sat up a little, his chin digging into Katsuki’s chest as he met his eyes, “I wouldn’t want to do this with anybody but you. And I wouldn’t change it for the world.” Eijirou wrapped his arms tighter around Katsuki.
They’d been together for years, but a heartfelt compliment could still have Katsuki’s ears turning rouge. “Shut up,” he said, looking off to the side.
“You’re the best Dad. I love you,” he pressed a kiss to Katsuki’s chest. “Happy Father’s Day.”
“Shut up,” Katsuki gritted again, but this time he clung onto Eijirou in return, “stop stealing all my lines.”
Eijirou chuckled before kissing Katsuki’s chest again.
“I love you and the demon spawn. I don’t know what I’d do without you.” Katsuki’s voice was quiet, gravelly like he was trying to keep the depth of his emotion underwraps.
“Aww,” Eijirou teased, “you love us.”
“I will explode your face,” Katsuki threatened.
“No you won’t,” Eijirou climbed up his body so he could look down into Katsuki’s eyes. “You’ve been saying the same thing since we were fifteen. Time to get some new threats, babe.”
Katsuki looked away and did that thing with his face that he insisted was not pouting. Eijirou begged to differ.
“Love you,” Eijirou leaned down and captured Katsuki’s lips in his. “You’re such a good dad, love raising our kid with you.” Eijirou keeps whispering sweet praises between his kisses, and as much as Katsuki likes to pretend he doesn’t have a praise kink, the way he’s melting under Eijirou speaks differently.
“Are you getting off on this,” Katsuki says, throwing his head back so Eijirou can lick and bite down his neck. “Calling me daddy?”
Eijirou gives him a particularly hard bite for his mouthiness. Katsuki bucks up under him and grips him tighter. “Not daddy. Dad,” Eijirou stresses. “You’re so strong, carrying our kid and being a top hero. Love that, love you.” He punctuates his mumbling by licking around one of Katsuki’s exposed nipples before pulling it into his mouth.
“Fuck, Eiji,” Katsuki moans and presses Eijirou closer. Katsuki’s always liked having his tits played with, which is just as well for Eijirou because he could spend all day lavishing them in attention.
Eijirou pushes his hips forward against Katsuki and Katsuki responds eagerly, setting them into a grinding rhythm.
“If we’re gonna do this, we gotta be quick,” Katsuki sounds breathless already. “Put Toshi down an hour ago, he’s not gonna sleep much longer.”
“Aye aye, captain.” Eijirou nods decisively.
“Don’t call me ca— oh, fuck.” Katsuki would deny the way his voice cracks until the day he dies when Eijirou shoves his hand down the front of his sweatpants and grabs his cock in one go.
“Baby, you’re already so hard,” Eijirou says, nipping at Katsuki’s collarbone. “You were totally getting off on being called dad.”
“Shut up shut up shut up,” Katsuki moans, already bowing forward and bucking into Eijirou’s grip, “Shut up and make me come.”
Eijirou knows that there’s not really any heat behind Katsuki’s words, but still he is being a bit… bratty. “Say please.” Eijirou stills his hand but tightens his grip, running his thumb around the head of Katsuki’s dick, feeling the silky wetness leaking there and smoothing it down.
“Never,” Katsuki bites back, still trying in vain to thrust into Eijirou’s fist.
Oh, so that’s how it was going to be. “Okay,” Eijirou says amicably. Katsuki’s eyes fly open, roaming over Eijirou’s face, and somehow, he knows he’s fucked up.
Then there’s a flurry of activity. Eijirou drags his tongue up Katsuki’s neck before sucking his earlobe into his mouth. His teeth worry at the flesh there, biting with that delicious pressure that he knows Katsuki goes wild for. Hand still down Katsuki’s pants, he starts jerking him off in earnest, quick and hard like he likes it.
“Yes, yes, Eijirou, just like that,” Katsuki’s voice is raspy as he moans into Eijirou’s ear, thrusting frantically up into Eijirou’s hand. Katsuki’s panting into Eijirou’s ear, encouraging him to go faster, harder, and Eijirou can’t help the way he grinds against Katsuki’s thigh, desperate for a bit of relief from the aching between his own legs.
Eijirou’s cock twitches in his own sweatpants when Katsuki starts mumbling quickly, frantically, “Gonna come, don’t stop, don’t stop.”
Eijirou stops.
“Motherfucker!” Katsuki detonates more small explosions in the air next to Eijirou.
“I told you to say please,” Eijirou says, but it’s breathy, his voice wavering from the way he’s also wound up.
Eijirou only gets a second of satisfaction before Katsuki is flipping them on the couch. Eijirou is not a small man by any stretch of the imagination, so when his husband (also not small but significantly smaller) flips him like a hot flapjack on a Saturday morning, he can’t help but groan loudly at the display of strength.
Eijirou stares up at him and Katsuki smirks back triumphantly. He lifts up a couple inches to tug Eijirou’s bottoms down, then he digs under the couch cushions and comes up with a tiny bottle of lube.
“Katsuki, we don’t have time—”
Katsuki grabs Eijirou’s hand and squirts probably too much of the slick lube onto his fingers. “If you don’t stick your fingers in my ass right the fuck now I will explode your face.”
Somehow Eijirou doesn’t doubt the validity of the threat this time.
Eijirou responds by shimmying Katsuki’s sweats and boxers down his ass just enough to reach around. He spreads his cheeks with one hand, gripping onto the flesh there so hard he just knows there’s gonna be a red handprint later. The fingers of his other hand trace gently around Katsuki’s rim and the reaction is immediate. Katsuki humps forward, grinding against Eijirou’s cock before thrusting back, trying to get Eijirou’s fingers inside him.
The skin on skin contact sends a hot wave through Eijirou’s body, and his cock jumps. “Oh, Katsuki,” his moan rings in Katsuki’s ear.
“Come on, baby, fuck me with those long fingers of yours,” Katsuki’s eyes are slammed shut but he’s still thrusting back then grinding forward. “Please, please.”
Eijirou doesn’t know what switch flipped in Katsuki, but when he finally slips a finger in, Katsuki arches hard and shivers atop him. “Fuck, yes,” he hisses.
Eijirou fucks him hard, holding him close, one finger then two spreading Katsuki apart. “T-turn your fingers just a little,” Katsuki manages to shake out, then Eijirou’s twisting his fingers and the moan that he lets out is so loud Eijirou spares a thought for the sleeping baby.
“There? That feel good, baby?” Eijirou’s twisted fingers are nudging Katsuki’s sweet spot, and Katsuki practically dissolves in Eijirou’s arms.
“Fuck me, fuck me,” Katsuki whines, losing finesse as he gets closer to the edge. Eijirou’s cock throbs under him and he’s panting loudly into the air between them, trying to keep it together enough for Katsuki to come on his fingers.
God, the friction where Katsuki is thrusting forward, it almost feels like he’s the one getting fucked. “Yeah, you make me feel so good, baby,” Katsuki says into his ear. “Al-always do, take good care of me.”
“Oh, fuck, Katsuki,” Eijirou’s voice rises, arching under Katsuki. He grips Katsuki’s hips, moving him up and down, down on his fingers curled in his ass then up against his cock and oh, shit, he’s gonna fucking come.
Eijirou doesn’t know who’s in charge here anymore but he knows that he would follow Katsuki into the depths of hell as long as he keeps grinding on him, bringing him closer and closer to that sweet release. “Keep—oh shit—keep talking, babe.”
“Yeah? Want me to tell you how good of a dad you are?” Katsuki’s panting directly in his ear, but Eijirou feels like he’s teetering on the edge, about to fall off into that sweet abyss. “How I can’t fucking wait until you make me a dad again, want to spend the rest of my life coming on that fucking cock—”
“Holy shit—” Eijirou pitches forward, hand stilling in Katsuki as he comes so hard his breath is stolen from his lungs. Every muscle is clenched as his dick pumps rope after rope of sticky come between them, toes curling, tongue arrested to the pleasure.
“God, yeah, love seeing you come,” Katsuki starts, but Eijirou flips them again before he can get the whole thought out.
Like this, Eijirou can loom over Katsuki, red hair falling in a curtain around them because the elastic that he uses to keep it in a high ponytail broke sometime during this whole thing. Like this, he can brace one hand against the chair arm as the other fucks Katsuki in earnest.
“Touch yourself,” Eijirou demands, because he wants to see Katsuki fall apart under him. Katsuki tries to nod but instead he just pitches forward as he grabs his own cock and starts pumping furiously.
Katsuki trembles under him, thighs shaking and abs jittering, and he shouts when Eijirou’s fingers dig against his prostate. Eijirou leans forward to smash his lips against his, hoping that he caught enough of the scream so as to not wake the baby.
Sometimes, when Eijirou gets worked up like this, when they both play off of each other, working each other up to explosions, words tumble out of his mouth. Katsuki says it’s dirty talk, but honestly Eijirou’s just telling the truth. So when he whispers into Katsuki’s mouth, lips moving against his, “I can’t fucking wait to get you pregnant again, can’t wait until you’re growing another perfect little mixture of us both,” it’s just the truth.
Katsuki throws his head back, shaking under him as he groans toward the ceiling, “Yeah, fuck yeah, come on Red, make me come make me come.”
Eijirou moves the hand he was using to hold himself up to press under Katsuki’s bellybutton, the other hammering into Katsuki’s sweet spot, “Can’t wait to come deep inside you, so deep that you feel it all over, can’t wait to put another baby in you—”
“Fuck,” Katsuki’s voice is strangled as he shoots so hard it starts to splatter against his chin, “Eijirou.” He’s a beautiful sight to behold, and Eijirou can’t take his eyes off him as waves and waves of pleasure wash through Katsuki’s body, chanting Eijirou’s name like it’s the only word he knows.
Katsuki sobs as he comes down, gulping big breaths of air as he tries to bring his faculties back under control. Eijirou watches him let out a final sigh, looking serene, dick softening slowly in a pool of come. He slips his fingers gently from Katsuki, noting the small hiss he makes, before flopping onto the floor next to the couch.
Eijirou stares dazedly up at the ceiling as he reels from what was a wild twenty minutes.
“Fucking shit, Ei,” Katsuki exhales, dropping his hand over the side of the couch. Eijirou wipes his dirty hand off on his sweats before grasping Katsuki’s fingers in his. He squeezes from his place on the floor.
For a while, there’s silence except for their heaving breaths, everything slowing down back to normal. He takes his own tshirt off to hand to Katsuki to wipe himself off. Eijirou takes a second to appreciate all that he has: a beautiful husband, beautiful son, career he enjoys, friends and family he loves all in a home he loves. He’s a lucky man.
“Did you mean what you said?” Katsuki’s voice breaks through the silence.
“Which part?” Eijirou says, rubbing his hand down the side of his face, “Kinda, uh, said a lot of things?”
“The part about putting another baby in me?”
Eijirou chokes a little and doesn’t notice the way Katsuki squeezes his hand lightly. “I mean! You know how I get during sex sometimes—I don’t want to pressure you—but yeah if you, like, wanted to have another kid I wouldn’t be opposed or anyth—”
“You already did.”
Things are quiet for a second. “What? I already did what, Kats—”
“Put another baby in me.”
Eijirou listens. Repeats the sentence in his head, processes it. Then he’s shooting up to stare down at Katsuki, where he’s staring back at Eijirou and waiting for him to put it together.
“Really? Like really really?” Eijirou’s eyes are big, round with wonder and surprise. “You’re pregnant?”
“Happy Father’s Day, part two,” Katsuki starts to say but then Eijirou is surging forward and kissing the breath from Katsuki’s lungs.
“God, I love you so much,” Eijirou’s lips move against Katsuki’s.
Katsuki cradles Eijirou’s face in his hands. He uses his thumb to wipe at the twin tear tracks coming from Eijirou’s eyes before planting another soft kiss on his lips. “Love you too.”
They breathe in each other for a second, enjoying the bubble they’ve created and the beginnings of a person growing between them.
Eijirou gives Katsuki one more quick kiss before jumping to his feet. “Toshi!” His voice carries through their house all the way back to the nursery where their child is probably no longer sleeping after Eijirou’s noise. “You’re gonna be a big bro!” He tears off down the hall before Katsuki can catch him.
“Eijirou, I swear to god if you wake him up I will explode you where you stand!” Katsuki runs after him.
Their family is a little silly, a little wild, a little unconventional, but it’s theirs and they love it. And it’s growing.