NEN
Nen is the main power system in Hunter x Hunter universe. It allows one to manipulate and shape their Aura or Life-force.
The 4 Major principles are Ten, Zetsu, Ren, and Hatsu.
Ten-to keep their aura from leaking away from their body they must Ten(Envelop/Shroud)
While Ten allows a user to keep aura from leaking away from their body, Zetsu (Suppress/Null) stops the flow of aura from their body altogether.
Ren- focuses on outputting a larger amount of aura than Ten, projecting it outwards explosively. This amplifies the user's physical strength and durability and provides a large pool of aura for any advanced techniques or individual skills they decide to use, albeit at the cost of expending said aura. One can train their Ren to extend its duration and increase the amount of aura at their disposal. It is said it takes one month to prolong one's Ren outside of combat by 10 minutes.
Hatsu (Release/Act) is one's personal expression of Nen. Its qualities are influenced by but not restricted to the Nen user's natural Nen category, one of the six available. Hatsu is used to project one's aura to carry out a certain function, creating a special and unique paranormal ability that is colloquially referred to as a "Nen ability".
(Copy paste from Hunterpedia)
Aura or Nen type. Using the Water Divination Test one can find out their Aura type. It can be:
Enhancement Transmutation
Emission Conjuration
Manipulation Specialization
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