Maybe didn't used to be a vampire. Who knows. Some things will just forever be a mystery, surely.

"Mm." He absolutely does ignore the 'unless you want to' that suggests Levi does, in fact, want to see his fangs. The merit of making sure it wasn't a local monster does pan out. But the rest, where it's 'one of us', causes Vincent's slight amusement to fade quickly again.

"These instincts and the effects of the moon. Don't forget that we're as dangerous to each other as we are to the monsters. No matter how much someone may regret it after."