MOMMY AND DADDY!
synopsis: a villain's quirk transports you and katsuki's kid from the future to the present! except you're.. not even dating?
a request!
notes: this is a lil diff from my usual unofficialbf!katsuki bc that version ive been writing is like positive ur gonna get married meanwhile this one is like "whos ur mommy?" HO U SHOULD ALR KNOW. *pow pow* i dont usually do interesting rqs like this but i figured ill try it out
it starts with a pop.
a shimmer of light in the middle of the ua training field, a blink of time bending strangely, and suddenly there’s a kid standing there.
small. blond. scowling.
he’s maybe four or five, fists clenched at his sides, little combat boots planted firmly like he’s ready to fight anything that so much as looks at him wrong. it’s quiet for a second.
“who the hell are you people?! where's my mom and my dad?!”
the entire class freezes.
izuku opens his mouth, then closes it. the kid looks really familiar to him. ochako makes a small noise. katsuki, standing off to the side, scoffs like he’s already over it.
“the fuck kinda dumb training is this..”
the kid’s head whips toward him, (e/c) eyes wide.
“daddy?!”
katsuki chokes.
“..HAH?!”
the kid runs full-speed across the field and crashes into him. little arms wrap around katsuki’s legs like he’s safe. like he knows him. katsuki looks like he’s been struck by lightning.
the kid beams up at him. “you look.. younger than normal. but you still look cool!”
“the hell?!”
“bakugo!” aizawa barks. “watch your mouth. that’s clearly a child.”
"looks like he already knows how to swear anyways.." katsuki growls under his breath but says nothing more. he awkwardly pats the boy’s beaming head like he’s defusing a bomb.
they figure it out eventually. it was a villain's quirk. time displacement or something of the sort. temporary, but irreversible until the cooldown ends.
so now… there’s just a tiny version of his future kid hanging out in the dorms.
-
“where’s mommy?” he says, pouting.
katsuki stiffens. “..who's 'mommy?'”
“...mommy,” the kid answers like it's the most obvious thing in the world.
katsuki groans. "what do i call her?"
the kid ponders for a second. "sweets. and sweetheart. sometimes baby or mama, too."
katsuki's entire body flushes. "i do not!"
"you do!"
"i do not!"
"you do!"
katsuki growls at the kid, cheeks and ears on fire. "her name. do i never call her by name?"
and then you walk in. rubbing sleep out of your eyes, hoodie too big, hair messy, and katsuki doesn’t even notice how his gaze softens.
but the kid does.
his face lights up.
“mommy!!”
you blink. “what.”
before you can react, he’s launching into your arms like he’s done it a million times.
you catch him. hold him.
and… oh.
you melt, instantly. soft smiles, hands carding gently through his hair.
katsuki’s instantly realizes what this means.
his future kid's mom is you.. meaning his future wife is also you.
oh.
you look at him over the kid’s shoulder. “who's this? he looks just like you!"
“he’s doesn't.”
"he does! same hair and face and everything! different eye color, though."
the kid tilts his head. “you sleep in the same bed in the future.”
you choke on your own spit. katsuki goes red fast.
“no we don’t-”
“daddy gives her forehead kisses,” the kid adds helpfully.
you stare.
katsuki turns away, face burning.
you press a kiss to the kid’s head despite your beating heart, eyes a little soft, like your heart’s doing dangerous things.
-
over the next few days, katsuki is quiet.
he takes care of the kid without complaint. makes his lunch, lets him nap curled into his side, shields him with an arm anytime someone gets too close.
he watches the way you brush crumbs off the boy’s cheeks, how you tie his shoes, how you hold his hand like he’s something small and precious.
you’re a team already.
and katsuki wants that. more than he’s ever wanted anything.
the night before the quirk’s cooldown ends, the kid curls up in katsuki’s bed with you on one side and him on the other. he’s fast asleep.
you’re barely awake.
“you’re good at this,” you murmur, voice quiet in the dark. “you’d be a good dad.”
katsuki swallows.
“only if it was with you.”
you blink.
then smile. small. shy. warm like summer mornings.
he leans in, presses a kiss to your forehead, just like the kid said he would.
and maybe the future’s still far away, maybe nothing’s set in stone yet.
but it feels like home.
and maybe, just maybe, you’ll get there together.
masterlist





