[action]
[Kamui's never seen Harry use magic or go after his wand before, but he understands what the gesture is for anyway. That's the movement of someone going after a weapon. Kamui briefly looks very wary, but it doesn't take him long to relax.]
You don't remember me? [Kamui doesn't sound confused or surprised -- it's much more like he's asking Harry to confirm a suspicion than anything.]