"You're not from around here, then? We're pretty much a dime a dozen here. Well, relatively speaking, of course."

Truth be told, he does figure that you're new. Your aura's colors aren't tinged with the faint kaleidoscope of someone who's been around a lot of other supernaturals.

He tilts his head a little bit at your approach, which, all things considered, seems altogether too hesitant for his comfort. Only then does he realize that he's still fully decked out. At that, he unhitches his blades, and with a tiny gesture of the thumb and forefinger akin to spreading a stitch open, opens a tiny pocket of no-space and stuffs his swords in there.

There. A gesture of trust and non-aggression. Nothing to be afraid of here, kid. Maybe the gesture will show you it's okay to open up a little bit?

"... Sin-Eater?"

He sure hopes you're not averse to talking about that.