Hm... [He doesn't recognize the school's name, but he's not familiar with every school in Japan. It could have slipped his radar easily enough, and that isn't the biggest concern right now.

The bigger question is how this student ended up in the city with his teacher's clothes, but without the teacher.]

I haven't seen a working train since I left the platform, no. But since we found our way into this place, there must also be a way out. It might just be harder to get to.

[He looks at the nicely folded uniform, noting that Mika did in fact treat it with careful attention. There must be some attachment, then. If it were someone else's uniform, he could easily have dismissed it and left it to be found by the owner or thrown away.]

Perhaps the machines here are actually a kind of doorway too?