Nen Information

Nen is one of the defining features of the manga Hunter × Hunter by Yoshihiro Togashi. It is a technique that allows a living being to use and manipulate their own life energy (known as aura).The term "Nen" can also be used in conversation to refer to aura. A person capable of utilizing Nen is colloquially referred to as a "Nen user", while those who cannot go by the name of "non-users". Because one can craft a great variety of para-psychological abilities through Nen, it is considered a dangerous power that is kept hidden from the public at largeto maintain balance in society.

Aura is the life energy produced by all living bodies vital for survival. Aura from all parts of the body has a tendency to flow together, producing one mass of energy. This happens without the individual's awareness, typically resulting in a slow leak of aura continually escaping the body and stemming up and off the top of the head. The pores or points on the body from which aura flows out from are called "Aura Nodes". In normal conditions, aura leaks away constantly without exceedingly harmful consequences; however, if someone whose Aura Nodes are fully open does not attempt to close them or control the flow of their aura, they will soon grow so fatigued they will be unable to stand or even lose consciousness. Grave wounds such as mutilations can disrupt the flow of aura in the affected body part and even stop it altogether. Controlling one's Aura Nodes is the first step to becoming a Nen user.

Enhancement is the ability to use aura to increase the natural abilities of an object or one's own body.[3] Therefore, Enhancers are able to greatly increase their physical attack and defense and are best suited for melee combat.[15] Proficient Enhancers who also take good care of their body can make it as durable than tanks[81] and generate as much force with one of their blows as a small missile.

An affinity for Transmutation means a person can change the properties of their aura to mimic something else, or only specific attributes.[3] Altering the shape of one's aura falls in this Nen category too.[83] Similar to Emission, constructs created via Transmutation are pure aura, therefore they are invisible to individuals incapable of using Nen. Transmutation is often mistaken for Conjuration due to their similarities. The difference is that Transmutation allows the user to mimic the properties of a substance with their aura, whereas Conjuration changes aura into the actual substance.

An affinity for Emission means that a user has an easier time separating their aura from their body.[3] Aura usually decreases in intensity very quickly when it leaves the source body, but adept Emitters can separate their aura from their body for long periods of time, over long distances, and still be able to maintain it and its functions. Emission is also required to manifest the effects of certain abilities away from the user, and to preserve those of Transmutation and Enhancement abilities after the construct or medium is separated from the user's body. An advanced application of this Nen category is teleportation.[85] Emission might also be involved in rendering one's aura able to phase through matter.

In most cases, Conjuration is intended as the ability to create a physical, independent, material object out of one's aura;[3] however, users of this category can also create laws and principles and affix them to a specific area.[85] The durability of a conjured object can generally be taken as a measure of the user's skill, although conditions can be used to strengthen it.[15] Once a person has mastered the materialization of a certain object, they can conjure it and dispel it in an instant, whenever they want.[92] However, even if one were to completely master this Nen type, there would still be objects they could not materialize, such as swords that can cut anything, as they go beyond "human capacity". Izunavi vaguely described it as the inability to conjure objects overly supernatural.

Abilities belonging to Manipulators allow the user to control living or non-living things in a certain way, as well as manipulate aura constructs, the main advantage being the ability to 'manipulate' enemies.[3] Abilities of the latter type are especially feared, since the fight can be brought to an end as soon as the conditions are met.[98] The degree of control is, for the most part, determined by a condition that may or may not put the Manipulator at a risk or a disadvantage (such as attaching objects on the enemy, touching the enemy in a certain way): the higher the difficulty for the condition to be achieved, the better the degree of control. However, it is impossible to control a target that is already under the effect of Manipulation Nen.

Specialization could be broadly defined as anything that does not belong in any of the other five categories, making it the vaguest Nen type. Accordingly, its effects are wide-ranging: some influence Hatsu itself, for example by appropriating others' Nen abilities[47] or by altering affinities,[15] while others allow the user to garner knowledge that would be unattainable through other means, such as about past[103] or future events;[104] others have completely different effects.[105] Consequently, Specialists are not as much at a disadvantage as users of other Nen types if their category is revealed.[106] Only Specialists can use this Nen type. It is possible to become one later in life, although it is more likely for Manipulators or Conjurers, which is why this category is placed at the bottom of the Nen chart. Since its position is dictated by a factor other than the affinity for other Nen types, it is currently unclear if it has the same acquisition rates as other categories, although it should be noted the presence of Specialization in the chart affects other Nen types regularly.[15]

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