Made to study themselves...an art studio, then? [He's only been in the photography club, but even then members had been encouraged to take photos from different positions and it's possible that people had once posed in front of these mirrors as models.

Minato would point out that this is already a creepy situation, but it sounds like that goes without saying.]

But now that you've mentioned it, it's strange that there's no signs of life anywhere here. [He had felt vaguely bothered ever since they came above ground, and it's only now that he realizes how creepy it is that this abandoned city looks as if its inhabitants had vanished without a trace.] ...let's leave.