Zetsu

While Ten allows a user to keep aura from leaking away from their body, Zetsu (絕, Suppress?) stops the flow of aura from their body altogether. By closing all of their aura nodes, the user is able to stop almost all outflow of their aura. Because the user is no longer surrounded by their own aura, they can become more sensitive to the aura of others. This can be useful when tracking another person, and it will also prevent other users of Nen from noticing them. Zetsu can also be used to restore vitality, since it forces the body's external layer of aura to be fully contained within.[2] However, since Zetsu involves shutting off one's aura, it can be dangerous since it leaves the body defenseless against any aura attack. Even a weak attack enhanced with aura could do massive damage.