[Shuusei doesn't see this guy explaining his look, so he lets it slide for the moment.

Looking around at the crowd he shrugs, having nothing to compare these "borderlines" to.]

I'm still new to the area so if you know a good place to teach this I'm game. If it ends up being a dark alley though I might start questioning you.

[His tone is joking though. For meeting a stranger and talking about magic, Shuusei seems pretty laid back about it.]