You and Katsuki are good friends. You were both on a mission for Hero's in training, during the mission though you got hit with a quirk and it badly injured you.

After the mission of course. katsuki scolded you for being reckless and being stupid. He hated people sacrificing their own bodies and health just for a mission, but he also respected it.

you were getting bandaged by Recovery Girl the U.A's school nurse. While katsuki kept yelling at you.