These are the more advanced techniques. Most of them are achieved by using a combination of the basic techniques. Most nen users learn Ten, Zetsu and Ren first before attempting these techniques. The Hatsu, being a nen-user's individual 'skill', is often something that a nen-user will develop gradually over a long period of time.

 

Shū

Shū (周 Enfold) is the advanced form of Ten. Shū allows a Nen-user to extend their aura to an object, allowing them to "use" that object as if it were an extension of their own body. For example, one could use Shū to extend their Ten around an object (and not just their body), which would strengthen and protect the object like the way Ren strengthens and protects the body. This is the technique that allows Hisoka to make his solitaire cards as sharp and as hard as metal knives.

 

En

En (圓) is an advanced application of Ren and Ten. In Ren, aura usually envelops only a small amount of space around the user's body. En is when one extends their Ren so that their aura extends further than normal, then uses Ten at the same time to give shape to the aura, usually a sphere. Someone using En can feel the shape and movement of anything entering their En-covered area. The downside to this is that it is extremely tiring and draining for the nen-user to constantly deploy so much aura. Those who master En are typically able to extend their En to a circle of 50m radius. There are exceptions--Zeno Zoldyck, one of the most powerful assassins alive, is able to extend his En to a radius of 300m. Also, the chimera ant Neferpitou, has an irregularly shaped En and can extend a tendril of it up to two miles away.

 

Ken

Ken (堅 Fortify) is the advanced version of the basic Ren technique. Ken is a defensive technique where a Nen-user maintains a state of Ren over their entire body, allowing them to defend against attacks from any direction without the need to use Gyō (described below). Ken is as useful as a defensive position, but is tiring to maintain. Additionally, it is not as strong as Gyō on any given part of the body, since it protects the whole body evenly. Because of that, it is used to guard when one wants to be cautious.

 

In

In (隱) is an advanced form of Zetsu that can almost completely hide a Nen-user. In can also be used on a Nen-user's Hatsu ability (more information on why some Hatsu abilities are visible can be found in the Hatsu category section) to make it invisible to other nen users. In can be countered by using Gyō on the eyes, or by using the technique En.

 

Gyō

Gyō (凝) is a technique where a Nen-user concentrates a larger than normal portion of their aura into one specific body part. This ability to concentrate the aura is known as Gyō. Gyō increases the strength of that one body part, but leaves the rest of your body more vulnerable.

Gyō is most often used on the eyes, which allows a Nen-user to see things which would otherwise be hidden (e.g. nen objects hidden by In). This also allows a Nen-user to analyze an opponent to find weaknesses that would otherwise be unnoticeable. 

 

Kō

Kō (硬 Temper) is the strong form of Gyō, where all of an individual's Nen-energy is concentrated into one particular body part. Zetsu is used to completely stop the flow of Nen in all other parts of the body. This makes that one body part exceptionally powerful, but leaves the rest of the body completely unprotected. This is used by some Nen-users as an offensive technique (a Kō-punch would carry all 100% of your Nen-power with it), but it is a risky move (leaving the rest of your body unprotected in a fight against another Nen-user is not generally a good idea).

 

Ryū

Ryū (流 Flow) is the term for real-time use of Gyō (adjustment of aura concentration in various body parts) by a Nen-user in battle. For example, the use of Gyō to increase the amount of Nen in a fist as one strikes with it, to increase damage done; or to increase the amount of Nen in an arm as it is used to block a blow, for extra defense.