Katsuki doesn't mean to become a top charting one hit wonder but yet, it happens.

To be fair, he never would have had it not been for Denki forever-vlogging-every-second-of-his-life Kaminari didn't blast him all over his yo/utube page, but he can't say he /hates/ that he did.

It was supposed to be a private moment, one just for him, Eijiro and their close knit group of friends.

A proposal, cliche and as embarrassing as any other proposal, but of course, that was part of the charm wasn't it? To do something horribly cringey in the name of love?

At least, that's where Katsuki thoughts lay when he was putting together his own proposal for his future husband.

He'd been planning for months, or more honestly from the very first week he laid eyes on him during their freshman orientation of college, but who was counting?

But for the life of him, Katsuki could not figure out exactly how to do it. There were so many ideas, so many different ways to ask but like all other love sick fools, his proposal needed to be /special/, handcrafted to the man he was asking.

So be plotted and planned until he ripped out a good chunk of his hair in frustration and nearly just threw the fucking ring at Eijiro and hoped he'd get the damn hint.

It shouldn't have been a surprise that Eijiro would be the one to save him, just like he always did.

Just when Katsuki was at his wits end, Eijiro practically gives him his proposal dreams on a silver platter.

Eijiro was sobbing, which usually would be a not great thing, but this night, it was a damn miracle. Katsuki could lick the tears off his blotchy face in gratitude.

After being assured that no one died, Katsuki finds out what Eijiro was crying over. Hardly able to speak, Eijiro just turns his phone around and shows Katsuki rather than telling.

It's a compilation of musical themed proposals.

Katsuki gets secondhand embarrassment from watching nerds dancing in flash mobs, or other losers suddenly busting into acapella at dinners but Eijiro can't stop crying. He loves each and everyone one, awwing loudly despite his tears.

"Isn't it manly?" He asks Katsuki without looking away from the screen, "singing your proposal in front of everyone?"

Katsuki wants to say no, that it's stupid as hell, but Eijiro's wistful tone gets him to keep his mouth shut.

It's that night after Katsuki wipes away Eijiro's tears and slides into bed next to him that his plan finally takes shape.

He was going to blow his future fiance's damn mind.

It takes a couple weeks to get it right, after all, he wasn't going to be like all the other extras and use someone else's lyrics to propose, no fuck that, he was going to write his own fucking song.

Eijiro wants manly musical proposal? Well that's what he's gonna fucking get.

When its written, it's cheesy as fuck and kind of makes Katsuki want to throw up but that just means Eijiro is going to love it.

He'd have loved it to be private, for no other human on earth to see how fucking sickeningly sweet he could be, but that wasn't was Eijiro wanted.

It sucked, but Katsuki wasn't anything if not thorough so he called up their stupid friends and booked the dumb restaurant and everything was set in place for the most magical night of Eijiro's fucking life.

And really, it was magical, even Katsuki couldn't deny it.

The restaurant (where they had their first date, a little hole in the wall curry place) went overboard to make sure everything was perfect. Their friends decorated the place to shit and Eijiro? Completely perfect.

When Katsuki suddenly stood, getting handed a guitar by one of their friends hiding off to the side, Eijiro's gorgeous eyes already started to well up with tears.

And it was a struggle to get through, not just because it was embarrassing as all fuck to be doing it, but because

Katsuki wasn't a total fucking emotional cripple and though his words were sappy and smothered in cheese, he'd meant every single one of them.

And when the melody came to an end, when the question finally came out of his mouth, chest heaving with emotions, Eijiro smiled.

His yes was solid and firm and his kiss even more so.

They were engaged and it was perfect.

As expected, their phones were blowing up with notifications the next day. Family and friends all chiming in to give their congrats, or so Katsuki assumed.

It wasn't until Katsuki phone was STILL going off, a full 24 hours later that he finally went to look at his notifs.

He has missed calls and a ton of emails all from people he didn't know, companies he never heard of.

Assuming he'd gotten pranked by Denki and added to a spam list or something by him, he called the bastard to yell at him.

Turns out, it /was/ all Denki's fault.

Unable to help himself, Denki had lived the entire proposal and then uploaded it after to all of his socials.

In less than a day, KiriBaku had gone viral.

Their were talk show invitations, cover songs being made on the hour of his song for Eijiro and even an offer for a record deal.

Katsuki wanted none of it frankly, he just wanted to marry his boyfriend and go back to people not knowing who he was.

It was Eijiro who finally got him to cave just a little. To admit that he liked the attention, and not even for him. No, he loved seeing Katsuki getting the praise he deserved, he loved knowing how everyone got to see HIS fiance being romantic for HIM.

It made him smug as hell.

It was as possessive as it was sweet and kind of hot if Katsuki was being extra honest.

Eventually, Katsuki caves, but just a bit and only after Eijiro begs him.

He gets his song recorded, after all, everyone's already heard it anyway so he might as well get paid for it.

It takes off, even bigger than the video did.

It's weird as fuck to hear his own voice on the radio, but Eijiro's swoons every time so it's kind of alright.

Katsuki is hounded for months, various producers and record labels who all seem to want him, but he turns them down, content to just have the one song recorded and thats it.

Any other song he writes is for Eijiro and Eijiro alone.

Despite how annoying everything was, it's pretty great that the wedding and honeymoon are paid for by fans of the video who made a crowd fund for them and of course the subsequent royalties from the song for years after.

And even Katsuki can admit, that there's something nice about hearing his song, the one he wrote just for husband, still being played at weddings all over the world. That his love for Eijiro got to be shared all over the globe, his luck in having him for all to see.

And if that was the price for a teeny bit of fame, Katsuki would pay it gladly.