Pro Hero deku proposes to ground zero at the end of a swanky gala dedicated to the two of them for reaching joint no 1

Bkg, furious, says no

10 minutes later deku finds out it's bc bkg hid an engagement ring in deku's champagne to ask deku to marry HIM +

Obviously deku also says no because WHY COULDNT YOU JUST SAY YES THE FIRST TIME KACCHAN and bkg's like BECAUSE I WAS GONNA PROPOSE FIRST AND YOU RUINED IT YOU STUPID DEKU

It's all very cute until these idiots get competitive over it. Deku ropes their friends into holding signs outside their living room window all day. Bkg writes MARRY ME DEKU in smoke above the skyline (and gets arrested for abusing his quirk in public. deku has to bail him out)

Deku writes a proposal in roses for bkg to find on his run. Bkg carves figurines of them holding hands in chocolate with the ring perched on choco-deku like a crown

(bkg calls the park supervisor and tells him he's been vandalised. Deku makes sure to eat chocokacchan head-first)

It gets worse. Bkg sets timed messages to text deku 'marry me' every 30 minutes. Even at night. Even when he's at work. Deku can't even turn off his phone in case there's an emergency

Deku kidnaps kacchan in the middle of the day and leaps to the top of tokyo tower. 'isn't this romantic,' he says. It's not romantic. It's windy and bkg gets attacked by a bird. He still won't marry him.

Long story short they're both stubborn and keep proposing to each other in increasingly ridiculous ways. A billboard. A star named after deku. A carving in the side of mt fuji that looks shockingly like bkg's face. The media has a field day. Deku is seriously considering jumping

into space and spray painting 'kacchan' on the moon. The prime minister of japan calls him to tell him to stop.

And then one day bkg tries to write deku a poem. But it's not good enough so he tries again. And again and again until he's ripping his hair out because nothing he can think of really says what he wants it to say. So he throws everything out and stomps off to make dinner and sulk

Deku comes home to bkg banging around in the kitchen. He goes to change out of his uniform and pauses bc the bin in their room is overflowing even though he just cleaned it out yesterday. It's full of crumpled paper. deku's a nosy bastard so he picks one up to see what it says

It's addressed to him. Just two lines, but they've been crossed out. He looks at another. An aborted attempt at a poem, but kacchan evidently gave up trying to rhyme the word 'sweetheart'. It's got a dark mark on it. Like kacchan got frustrated and snapped the tip of his pencil

He reads all of them. They're all broken attempts at saying 'i love you'. Objectively, it's bad poetry. One of them isn't even coherent. It's just a list of things bkg likes, like deku's freckles. His smile. His scarred hands. His kindness. How he found it in him to love bkg even

through all his mean, prickly layers. How lucky bkg is. How everyone but deku can see that deku is a wonderful person

Ofc deku bursts into tears. He runs to the kitchen to fling himself at bkg and tells him they're getting married next week. They can plan the wedding later. Deku just loves him a lot! And bkg tries to get rid of the failed poetry but deku wails so loud they wake up the neighbours

So they get married, just a tiny civil ceremony with their parents and friends. Deku cries the whole time. So does inko. All might officiates and they forget to make a PR announcement so the media goes nuts when they see them wearing the rings and a month later they have to

postpone their honeymoon because some idiot tries to steal a skyscraper and deku is INCENSED because they were gonna go to bali

But bkg doesn't care. Cause FUCK YEAH SUCK IT DEKU, HE WON