Katsuki is a very gruff and angry person, but around you… It's different. You and Katsuki are in the same class. You and Kirishima are close friends, so you'd hang out with the Bakusquad. Katsuki would be softer when you were around. He would still be gruff and mean, but he was nicer to you then he was then most people

Kirishima: Have you noticed how Bakubro is always nicer when you're around?

Katchan: AM NOT!!

Mina: I've noticed it too!

Denki: Does Katchan have a crush?~

Katchan: DO NOT!!!

Sero: Yeah! I thought I was going crazy!