I've always found this gesture curious, because it looked like the "shooing away" gesture to me, but Sasuke reacts as though he's being summoned. So I'm interested to know if this gesture is part of Japanese culture and would be generally understood.
I'm interested in two things here: Which direction is Itachi flicking his fingers? Technically speaking, he does both, but the way I understand the "shooing away" gesture is that you're flicking away, indicating to the other person to go away, so it could be a matter of how the gesture is understood. And I'd like to know how widely used this is in Japanese culture (or whether it's just an Itachi thing), and whether the Japanese would recognize this gesture as "shooing away" at all. Just an explanation for the gesture, basically.