It's not that Mika's never seen an illusion before, but, well, it's different when someone's borrowing a demon's power to do it, as opposed to entirely on their own. At least in his mind.

Arj's question makes him blink, though. Not because he's surprised by it, exactly, but because the last time he ended up telling someone what he is... Well, suffice it to say that the reaction had been rather poor, even if it wasn't unexpected.

"... I'm a vampire," he says simply, tensing slightly despite himself in an unconscious effort to brace for the worst.