81 : The X Fight X Begins < Free >

“Gon and Killua get a pretty cool moment when they finally get to unleash their Nen powers. Killua shocks and paralyzes Rammot, while Gon gets in his Rock punch right in Rammot's stomach.” Reddit · r/anime · 9 years ago

: Kite uses this encounter as a "checkpoint" or test. He refuses to intervene, insisting that Gon and Killua must defeat the enemy on their own to prove they won't be a liability in the more dangerous territory ahead. 81 : The x Fight x Begins

Watch Gon and Killua face their first Chimera Ant test under Kite's supervision: “Gon and Killua get a pretty cool moment

Reviewers often highlight this episode for its satisfying showcase of the main duo's growth after their training in previous arcs. 81 : The x Fight x Begins