He understands what Todoroki is saying. The regrets he's having. Words left unsaid that maybe never get said now.

How do you help with something like that? It's nowhere near Katsuki's wheel house. He's out of his depths. But as he drops his head back to look up at the ceiling, he already has his reply.

"You're talking about a guy who couldn't use his words to say that kinda shit. If anyone would know without you saying it, it'd be him."