[Hiro might find it difficult-- but perhaps the faint wispiness as the demon moves his way through the air and through the fog might be a hint. Where Hiro can't see him, Inugami has the advantage of scent.
So there might be sound, a faint wooshing of Inugami's body as the demon darts down out of the fog right at Hiro.]
action
So there might be sound, a faint wooshing of Inugami's body as the demon darts down out of the fog right at Hiro.]