Bakugou has been pining over Izuku for years, but he's never done anything about it because Deku is hyperfocused on being All Might's successor. All Izuku ever thinks about is hero work so Katsukj accepts that being his hero partner is as far as he's gonna get.

But then Inko

talks to Izuku and convinces him he's at marrying age. And Izuku, who has never thought about marriage or relationships before is like "alright, so let's just do this in the most efficient way possible and get it out of the way".

So Inko signs him up to a marriage agency and

he starts going on 'dates' who feel more like business meetings.

Katsuki is perpexled, "What the hell Deku?! Are you gonna marry some random extra who don't even know?!?"

And Izuku is simply, "I gotta someone, Kacchan, and I don't want to waste time looking. The agency

knows what they're doing. I'm sure this will get solved soon enough."

Bakugou is heartbroken. He can't believe Deku honestly haven't ever thought about him as a possibility and is so whatever about marrying someone else. He goes home to eat his mother's curry to fix his

broken heart and Mitsuki forces the truth out of him.

And Katsuki got his "win always" mentality from his mom, so Mitsuki isn't just gonna sit around and watch this clownery go on.

She goes to the agency and bullies her way until Katsuki has a date with Izuku.

Izuku is flabbergasted when he sees Kacchan waiting for him at the restaurant he's supposed to meet his date.

And then it turns out Izuku just never thought he had a chance with Kacchan. So, if he couldn't have the one his heart wanted, anyone else would have sufficed.

They go home, have amazing sex and love happily ever after.

The wedding is a beautiful affair. Inko couldn't be happier to see her son be so happy and loved.