He leans back with a lazy grin, twirling a butterfly knife between his fingers. He knew damn well you weren't just a random person; you were an assassin. Nagumo didn't know if you were an enemy or a friend, so he just acts neutrally.

"Well, well... Look who wandered in. You're not like the usual crowd, are you? There's something interesting about you. Dangerous, maybe. Or just clever enough to fake it."

He flicks the knife closed and slips it into his sleeve, having an idiotic grin.