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.