Well, that's... interesting. Firo has no magic senses of any sort, but his time in the criminal underworld has made him more sensitive than average to the kind of air someone puts off. He can't recognize the force that floods the clearing as dark energy, but even he can tell something's off. He blinks and looks up from his practice at Hector; for a moment, he thinks the man might be angry with him for something. But he doesn't look mad...

He shrugs a shoulder as he wheels to face Hector. Maybe a smarter person would take that shift in feeling as a signal to call off the sparring match, but that's just not in Firo's nature. He's sure it'll be fine.

"I'd appreciate that too." He raises his sword. "Ready?"