[Katsuki holds back the instinct to yell "you should be!" in response, not wanting to make Izuku feel any more guilty than he already does for being late. Instead, he pats his head a little bit more and decides to let Izuku know just how much he missed him and why he's so gosh darn happy to have him here with him (besides yknow... the fact that hes deku).]

The last thing I probably said to you was the apology, right?

[When he had poured his heart out for the other boy and let him know that he was so ashamed of how he used to treat him.]

Ever since then, I've been wanting to make it up to you for all the shit I put you through. I know you'll tell me that the apology's enough, but I don't feel like it is. And I was so ready to end this stupid war so we could finally start doing other stuff together.

Friend stuff.

[There's so many years where they could have-- they should have been spending their days together. So much time lost.]

I've been really pissed that you weren't here with me because of that.