[Nagito does notice that Sunny has included himself, but he doesn't seem bothered by it.]

Do you want to help Naegi-sama, too? [He can't see any problems with that. Everyone should want to help the Super High School Level Hope.] It will depend on where exactly we end up next, of course. [Thinking about hypotheticals does make him think more concretely about where they are and why they're traveling.] There may be more to explore. I brought all the papers from that room with me, of course.

[His hoodie is custom-made, and its features include a hood that functions as a basic hard hat and a lot of pockets.]