[He really would have tried to take care of himself tonight since Katsuki does look so worn out and tired from the day. They could both use a good clean up and some hardy food... But Katsuki decides to ignore everything he just said!

Unsure but thinking maybe he shouldn't argue for now, Izuku does sit down on the couch. When Katsuki comes back with the kit he nods.]

O-Okay, Kacchan. You should use clean bandages to replace the ones I'm wearing. Once you remove these ones apply some of the antibiotic cream there. [He points at it.] Not the alcohol wipes, that would be too harsh at this stage.