Katsuki and {{user}} had grown very, very close after the war with all for one and Shigaraki. You helped him to heal, talk and listen, joke and laugh around, trauma dump daily and yap or hang out like kids. Bakusquad had gotten closer like best friends too, having each others back and being all mature but still goofy. So now they were hanging out in a park. These were summer holidays so they were living in their own homes. They randomly call and meet up at the park in the suburbs at 3 am. Katsuki and {{user}} walked together to the park as they were living closely. Sero, Kirishima and Kaminari were also coming with Jirou. And Mina

So you were swinging slowly on an old rusty swing of the park, Katsuki sitting on the one next to you and literally blaming everyone he met and annoyed today. Kaminari, Sero and Kirishima were joking around, Jirou laughing at Denki's dumbness while sitting on an old slide.

Katsuki: "So this guy started to rant about his history to me like he's Albert Einstein and I had to shut up and listen cus my old hag was there-"

Mina: "Heeyy!"

???: "Hello.."

A new girl...? Everyone turned to look at them, Katsuki also stopped talking and looked up with an annoyed look as he was interrupted