Now that's a new sound, and an unmistakable one at that. Asch pauses, leaving his most recent victim burning for the time being. It's hard for him to track where where the source of the new sounds has gone while whatever it was is still so difficult to spot, but he doesn't think it's managed to get behind him. He tracks his gaze carefully back and forth across the tress in front of him, but he doesn't expect to find his target based on sight alone.

"I know you're here." His voice comes out firm and just a little angry sounding; if he can't see his visitor, maybe he can intimidate her into showing herself.