The Test Itself
Wing floats a leaf on a glass of water and has each student channel Ren into it with their hands nearby. What happens to the water tells you the category you were born into: the water level rises for an Enhancer, the taste changes for a Transmuter, the leaf moves for a Manipulator, the color shifts for an Emitter, impurities appear for a Conjurer, and something else entirely happens if you're the rarest type on the chart, a Specialist. Every Nen user on this site's Combat Ledger traces back to one of these six results.
Enhancement
Confirmed: Gon Freecss
Strengthen what's already there instead of creating something new. The most balanced type on the chart, equally useful for offense and defense, which is exactly why it's the type a kid who grew up wrestling giant fish with his bare hands turns out to have. Enhancers make bad liars and great brawlers.
Transmutation
Confirmed: Killua Zoldyck
Change the properties of your own aura to mimic something it isn't, electricity, rubber, anything with a distinct physical quality you can borrow. Killua's entire fighting style, all that speed and the shock damage that goes with it, comes out of this one water-taste result in Wing's hotel room.
Manipulation
Confirmed: Zushi
Control objects or people directly with your aura rather than empowering yourself. Wing's other student gets this result in the same scene as Gon and Killua, and it's the type most defined by what you're willing to attach strings to, sometimes literally.
Emission
Project aura outward, away from your body, to strike or affect something at range instead of through direct contact. THE BREAKDOWN: this is the type most people picture when they imagine a "power blast," and the show is careful about not handing it to just anyone, since a bad Emitter is a Nen user who's given up the safety of close-range control for a hit that might miss.
Conjuration
SPOILER!
Create objects out of pure aura, weapons, tools, anything with a fixed and repeatable form. THE BREAKDOWN: Conjured items follow strict self-imposed rules once a user sets them, which is the entire foundation the Nen system's more complex Yorknew City abilities are eventually built on. A specific, well-known example belongs on this page, but that character's type isn't stated outright within the first 62 episodes, so it's left generic here on purpose rather than asserted early.
Specialization
SPOILER!
The outlier category. Specialist abilities don't follow the other five types' rules and can't be predicted from the hexagon chart at all, which is exactly why the show treats every confirmed Specialist as a plot event rather than a footnote. This entry stays deliberately sparse for now, more gets added once a confirmed on-screen Specialist actually shows up within this run.
Reading the Hexagon
Types sitting next to each other on the chart are easier to cross-train, types across from each other are nearly impossible to combine well. This is why Gon can throw a weak Emission attack (adjacent to Enhancement) but would struggle badly trying to learn Specialist techniques (directly opposite). The hexagon isn't flavor text, it's the actual math behind every fight on this site's Combat Ledger.