Imagine Katsuki secretly plays an Otome game, and one of the characters he chooses to romance is a nerdy stereotype named Deku.
Katsuki is kinda obsessed with him and secretly buys merch of him, which he gets for cheap cause he's the least popular of the datables
And like, he has a section of his room dedicated to Deku that he frequently curses at while adding new merch to his collection.
"Stupid nerd and his stupid face, making me spend my money on his stupid freckles."
He then one day meets a cosplayer who looks exactly like how he imagines Deku to look in real life. Doesn't even hesitate to come up to him and ask for a pic, and the guy even ACTS like Deku. Sounds like him in-game. He's perfect. He's adorable. Katsuki wants to eat him
The guy agrees to a selfie, and Katsuki is bold enough to ask him for his Insta, hoping to maybe see more of his Deku cosplay
The guy is all blushy and nervous but agrees, putting his Insta into Katsuki's phone before he's called away by his friends
Katsuki checks, hoping to find more cosplays
Only to realize this Izuku guy is just a guy. No cosplay or anything.
He just looks like that
He went to a random stranger, asked for a selfie and his socials, and basically came onto him
Fic in the works, but feel free to use this as a prompt!
Tenko knew Katsuki had always been a rough kid with a smart ass mouth and the pride of someone much taller than him
There's no "but" to that sentence. Tenko thought the kid was bad news, but, much to his annoyance, his little brother Izuku seemed to look past these obvious flaws and followed Katsuki along with his other lackies
"Kacchan is amazing!" Izuku would say both to Tenko and to Katsuki's face. Tenko swears he saw Katsuki's head get bigger after the praise.
You'd think that having a friend like Izuku following you around would garner some special treatment. That Katsuki would see Izuku as his BEST friend, much like how Izuku says they are
You. Would. Think.
But no. Katsuki was all too eager to put down Tenko's baby brother just to make himself seem better. And no matter what Tenko tells Izuku or their mom, Izuku was all too eager to defend his friend and sing his praises
Tenko gave up at a certain point. They were basically babies. Surely one day, Izuku would grow out of it, so Tenko stopped interfering
That was, until Katsuki started getting more physical
All it took was one shove, and Tenko came marching over to set things straight. He didn't care that his mom would probably be disappointed in him for using his quirk like this, but at least all he was doing was lifting Katsuki up and away from his brother
and hitting him
In Tenko's defence, Katsuki threw an explosion at him first
Through the whole little fight, though, Tenko managed to get Katsuki to yell out what was bothering him and why he was being such an ass. Which led to Izuku crying out about how he "Never looked down on Kacchan! Not ever!" and how "I want to be a hero and save people by Kacchan's side!" all while he cried rivers
Which led to even MORE yelling and thrashing from Katsuki. Tenko had to fly the blond home to tell on him to Auntie Mitsuki, with Izuku running after them
THAT got Katsuki to quiet down real quick
In the end, their moms all got together for lunch to talk about what happened
Katsuki huffed and puffed through the whole thing, but did apologize (after a lot of yelling between him and Auntie Mitsuki), and both Tenko's mom and baby brother seemed all too happy to get things resolved (Much to Tenko's confusion and annoyance)
Not much has changed after that
Katsuki was still a cocky little runt, and Izuku still followed him around with stars in his eyes
Tenko thinks their friendship is weird. Always will
But after watching Katsuki beat up a bunch of older kids to defend Izuku, Tenko doesn't think the kid is all that bad
And besides, Tenko's found a new way to entertain himself outside of video games: Making fun of Kacchan
