#and im there like :| thats a new shirt u adorable gremlin

[kirishwima]

me, looking at my baby cousin with eyes full of care and love: i love you!

my cousin, briefly glancing back to me from watching tv: yeah ok

[hey-hamlet]

BNHA AU Ideas: Bamn! And the kid is 4

Also on AO3! 

TL;DR:  Izuku gets hits by a de-aging quirk and it turns out hes always been super cute.

izuku gets hit w a de-aging quirk back to like,, age 5-8

angst + fluff + dads happens

izuku, iida, bakugo, kiri and all might are getting groceries

not a great team for shopping but its like, just post internship pre cultural festival so its no a disaster

all might is there to make sure they dont do something stupid or get lost. he was kinda hesitant to go with them because he cant protect them anymore but they are little heroes! so they should be ok, right?

w r o n g

the villain attacks katsuki just outside the store, the only one of them that doesnt have a licence, izuku takes a hit for him and he and iida quickly take the villain down while kiri protects the bystanders

then izuku collapses and bakugo is ready to yell because if izuku takes one more hit for someone hes going to be the hit

all might runs over because even though its still dangerous he has a hero license (bc it hasnt been cancled yet because no one wanted to be the person to do it) and thats his s o n. iida is calling the people he should be calling

all might finds just, this tiny tiny green freckly mess in izuku's oversize clothing and he wants to cuss up a storm because FUCk hes liKe 6

bakugo runs over because all might looks like hes going to cry and hes not ready for that today and he sees this horrifically familiar face. he he does swear.

izuku looks so lost but he sees bakugo and he lights up!!

"kacchan!! youre so tall wow!!! so coool!!!"

and bakugo is going to scream bc f u c k hes so annoying and adorable. bakugo tells izuku that he is normally his age but got hit with a quirk that made him small and hes!! so excited!!

hes rambling about how cool the quirk is and wondering how long it lasts and how it works and allmight is just shell shocked still

"young bakugo, should we tell his mother?"

",,, inko is in america chasing down her husband to divorce him. i dont think she needs this shit right now"

"understandable"

kiri comes over bc whats happening? and he shrieks a little and hugs izuku

izuku is very lost but hes giggling bc kacchan's cool friend likes him, so maybe kacchan likes him now! bakugo is like "fuck why do i feel emotions thats wack"

so iida, having just reported what happened and now on the phone to aizawa walks over to tell aizawa everyones status. he and sees izuku and goes dead silent

"iida?? iida whats wrong?"

",,, hes,,, so s m a l l "

"wAiT WhAt"

"like,,, shrunk?????????"

"no sensei like,,, hes 5"

just a loud "F UUCK" as aizawa hangs up to run over

ok but they are all awkwardly buying the food bc they really need to get food, tiny izuku or no

and so izuku is with bakugo and allmight while the others do the worlds fastest grocery run

and izuku asks all might "mr? is your quirk being really tall? because thats super cool if it is!!" and bakugo is dying because what the fuck does all might say to that

"no my boy, im actually quirkless!"

"oh,, sorry sir"

"why are you sorry?"

"i dont know, but thats what everyone says to me when i tell them so i think its bad?"

and he just mumbles

"kacchan said i could play with him again if i got my quirk but i never did. do i get my quirk now? is that why we have cool friends??!"

and bakugo is going to cry bc all might looks so sad and he cant deal with that

so iida and kiri have bought all the crap and they are waiting out from with this tiny bubbly kid who they have to hold hands with or he Will run off to go look at stuff

aizawa shows up in the school car (,,, driven by mic because he cant fucking drive) and izuku is like OH HI

and aizawa is like ",,, hello?"

and izuku sees mic too and he thinks for a few seconds

"are,,, you two the new heroes that just started? from that really cool sports festival!!! i heard you from my preschool!!"

and bakugo is cackling be he fucking remembers that

and aizawa is red and nods and mic is like TINY CHILD WHO ARE YOU because aizawa didnt tell him what was going on

izuku is like "hi im midoriya izuku! please call me izuku!!" and mic is crying bc??? baby boy??

so they get an update ab the villain, apparently the quirk lasts for 2 weeks and allmight is caught between happy bc Tiny and sad bc My Boy??? he says how long it lasts and katsuki groans loudly

"bakugo?"

'AUntIEs iN aMEricA For 3 WeEKs"

"shit"

in the car all might has to hold him because aizawa didnt think this through and there isnt a child seat, so izuku is playing with all mights fringe because its long enough to be in his face and allmight is cry bc its his boy!!!!

they are up front because iida and katsuki need to talk to aizawa about whatever is going down with izuku. kiri is just there for moral support honestly, he is still pretty lost

izuku is asking present mic all these questions about his quirk ands all might is legitimately impressed at the control mic has because h looks like hes 30 seconds from bursting into a screech of joy at this tiny boy but his voice is just a little louder than normal

mic is singing a song in english

and izuku says "thats a rude song! my mum said so!" in perfectly understandable English and katsuki l a u gh hs

"I WAS WAITING FOR HIM TO SLIP UP HAHA"

and mic, cackling bc hes worked it out had to pull over for a sec

all might is red because hes been swearing in english the whole time oops

aizawa is like "Um????? whats happening"

katsuki, through tears : this little shit has known english his whole life but he didnt want more english homework so he just pretended he didnt through middle school and forgot to admit he could when we started UA

izuku looks lost bc what did he do?? mic is saying sorry to this tiny child for singing a rude song, iida is ab to have a stroke

mic and izuku chat about mics quirk in english happily and they pull up to ua and izuku is like wAIT WHAT. bakugo is cringing bc howwww do they explain this

present mic and aizawa, 0 clue what going on "its UA. you go to school here."

"oh, did i get into gen ed? is that why kacchan is my friend again?!!"

"youre in the hero course with me, brat"

and izuku looks upset and aizawa is lost because what kid cries when they are told they get to be a hero

"dont be mean, its rude to lie"

"why would i lie?"

when izuku says hes quirkless bakugo and all might look like someone kicked them

aizawa is like "wait,, quirkless?" and izuku looks at him confused because evryone knows izuku is quirkless

"yeah,, i have the toe thing-y."

and the kids face crumples

"does this mean i cant go into UA now??"

mic picks up the kid before he can start to cry and says "of course not! i bet youd be a great hero, quirk or not!!"

aizawa and mic are giving all might and Bakugo a Look because they look so sheepish

kiri and iida are lost because izuku Very Much has a quirk, it explodes him

all might all but pushes everyone through the gate and aizawa and mic are just staring at him because they Know hes not spilling something

anyway, eri comes to visit!! bc izuku is small!!

she calls him deku and izuku looks sad bc kacchan only calls him deku when hes mad at him and izuku just whispers "you can call me izuku please?" and eri is like "YES IZUKU HI IM ERI HELLO"

izuku is very happy

hes still like, wearing a shirt dress basically so aizawa gets momo, who has a little quiet "HES SO SMALLL" scream in the cupboard, then pops out to make him a onesie. izuku asking if it can be allmight and momo is like “OF COURSE IT CAN YOU LITTLE MUNCHKIN ID DIE FOR YOU”

izuku gets this massive fuzzy onesie and hes like !!!” yourequirkissocoolallmightiloveitsoftthaNKYOU”

momo just hugs him because hes so tiny and cute oh my lord

eri and izuku play heroes!! eri is lemillion and izuku is all might and they are defeating the great villain Kirishima

kiri wasnt warned he was the villain. he just has these kids yeeting on to him and hes so lost

all might and bakugo are trying to make a child sized dinner. they are working together bc if they pretend they are doing something important maybe aizawa wont kill them

aizawa is just,,, glaring at them. he hasnt moved from the corner of the kitchen. bakugo is getting nervous, all might is trying not to spit blood into the food

its like, 4pm? and izuku and eri are sleepy but they are Big Kids so they dont need to nap. all might and bakugo are trying to finish the food before they fall asleep bc god damn it they worked for this

aizawa is trying not to smile but they are so goddamn cute. izuku is cheering because they made katsudon

"kacchan how did you know this was my favourite!! youre so coooolllL!!!!"

bakugo, suddenly feeling crushing guilt: yeah,, im,,, awesome

aizawa is like, walking slowly towards all might and hes scrambling to think of something to spare him from his wrath

bakugo : OH YAGI WERENT YOU ALL MIGHTS SECRATARY

izuku, crying: OH MY GOD

yagi, crying also : thankyou bakugo i owe you my life

izuku is asking so many questions aizawa has to remind him to breathe

please tiny izuku is very fond of aizawa but no one has any idea why bc the dude is scary

"eraserhead sir, when can i see my mum?"

aizawa, suddenly wishing he had kurogiri's quirk: ",,,,you seee"

ok but like, just for a little pain

"it'll be like a sleep over, ok kid?"

"you really want me to stay? most kids wont let me even play for a little while, so no one sleeps over. i can stay home without my mum if you want! i dont wanna bug you,,,"

aizawa, feeling a rush of fondness for this terrible child "no its ok, stay here. youre a good kid"

baby izuku clumsily braiding aizawas hair bc his mum taught him

consider: baby izuku and shinso

baby izuku is on a need to know basis bc there is a traitor somewhere. shinso is just minding his own business and runs into a giggling curly boy

and hes like ",,, who are you???"

"im izuku!!!"

shinso just looking at him and groans

"of course its you. its always you"

he picks up izuku and takes him to aiawa. izuku is patting his hair happily

"i found the gremlin"

"hi eraserhead!!!"

"thank god

izuku makes him help with his hero notes because he doesnt know kanji yet. izuku is just telling him what to do while shinso does as hes told, trying not to smile