Hunter X Hunter 2011 (dub) Episode 28 -

As Gon and Killua approach the registration desk, they are halted by an invisible, overwhelming force. Hisoka appears, warning them that they are not yet ready to set foot on this floor.

Wing introduces the basic components of Nen (The "Four Exercises"): Hunter x Hunter 2011 (Dub) Episode 28

Wing performs a "Forceful Awakening" on Gon and Killua by hitting their back nodes with his own aura. This opens their aura nodes, allowing their life energy to flow out. As Gon and Killua approach the registration desk,

Initially appearing as a clumsy teacher, he is revealed to be a "Master of Kung Fu" and a Nen practitioner, though he expresses private concern over the "terrifying" potential of his new students. Significant Technical Concepts This opens their aura nodes, allowing their life

This episode is a major turning point for the series as it formally introduces , the complex power system that defines the rest of the Hunter x Hunter universe. It shifts the show from a standard adventure/action series into a tactical, high-stakes battle shonen.