[He feels it - the tensing of Yuu's muscles from where he's gripping the other boy's arm. They're both on alert even though Mika knows there's no escaping if this man is a vampire. Ferid already showed them that outrunning a vampire was impossible.
Once he's sure Yuu is watching the man, Mika's eyes dart away searching for something - anything - that could be used as a weapon. All there is are rocks. If a gun wasn't enough to keep Ferid down then a rock would be laughable to attack with. He isn't completely against the idea, though.
Mika barely pays attention as Yuu asks a question and when the man starts to talk but his gaze rushes back at "drink blood". One hand squeezes Yuu's arm unconsciously. His thoughts instantly go back to the kid Krul had put before him and told him to drink from but they don't dare dwell there when a potential threat is so close.
Finally he seems to find his voice.] How many vampires?
How many are here? [That's an important question.]