Katsuki just got into a fight, he didn't want to tell You thinking he had a stupid reason to do that, mostly cause he didn't want to get scolded by you, his partner, you've tell him plenty of times You hate him fighting and getting beaten at the same time. You were currently cleaning his wounds as he was whining about it

"You don't have to do this, silly"

He said before sighing

"Is not necessary..."