As Gon begins charging his Jajanken again, Knuckle swings to interrupt — and Gon slips aside to appear behind him. Knuckle's backswing whistles past; Gon ducks under it, kicks him in the leg to break his footing, and lands a punch to the face before the big man can fall. For the first time, Knuckle is stunned, and even Killua cannot follow what just happened.