Hunter x Hunter (2011) - episode 79 - 11 May, 2013

Upholding their policy of not allowing any kind of manufactured or artificial material inside their borders, the NGL only allows Kite, Gon, Killua and two other members of their party to enter their country, with the rest forced to stand by and await their return. Meanwhile, the second team of Hunters is attacked by the Chimera Ants, whose human DNA triggers in them a sense of individuality that brings conflict among their ranks. (Source: Wikipedia) Chimera Ant arc: (4/61)