Hunter x Hunter 2011

[Splash!]

I just think that it is more than a coincidence that the 2 stealth types have freaked out the most. They seemed to have been caught off guard by intensity of their opponent's aura. That is not to say that Killua can't go in again using a more head on approach (he would probably fare better). Knov, on the other hand, seems to have been utterly defeated by that first experience.