[His danger-sense quirk (if it's even working correctly right now) would have told him if a real threat was coming at him and since he rarely sees Katsuki as a threat he really just didn't register his approach at all. He wasn't expecting to see the blond boy in a place like this and honestly, he's not sure how it entirely makes him feel. It's pure shock and relief.

His fingers grip tightly to the rim of the laundry machine's lid and for a second he just plain forgets he needs to put a shirt on.]

It's not that I'm letting my guard down, not in a strange place like this. I don't know where we are and everything is incredibly empty... But I- That's not the entire point, Kacchan! You-

[...]

It's a relief to see you.

[And he looks ... okay? Izuku was expecting Katsuki to be in some sort of bad shape but for redacted reasons, Izuku is glad that he seems... put together. Enough to insult Izuku, at least. And that's always a good sign.]