[ Caster admittedly never knew Mikoto that well, but this assessment lines in with what he knows ]

Do we know anyone else with fire-related powers? [ A beat before he specifies ] God powers, not just simple magic.

[ Then a glimpse of a movement catches his attention, and he turns in that direction- No one is there. Huh. Well time to take off the hood for better peripheral vision. ]

Looks like someone is here besides us. [ Or are they really? ]