Sometimes you can, if they're strong enough, or if they affect an area around them. [ She follows him, still looking bewildered as she takes in the crowd of people. ] Some of them can be very subtle though, and they are much harder to locate.

Wait, why would this make you feel old? [ She doesn't understand that, either.

Pointing at the crowd of people presents a problem. ] If the ayakashi is hiding in whatever they have clustered around, we're going to have a difficult time getting a look.