Friend
When Kirishima visits, Katsuki finds his presence to be welcomed.
The redhead is loud and obnoxious but his words are sincere. He is never afraid to speak his mind and maybe that's why he kept him around for so long.
It reminds him of another friend who he hadn't seen since he was child. A boy who had gotten lost in the woods… a boy who he treated poorly but over time he grew to respect him. His equal in every way.
Kirishima is no different.
This is a bond he is determined to keep— one that will last multiple lifetimes.
This is someone he could trust completely.
This is someone he cannot risk losing.