Chakra Flow

refers to any technique that increases the potency of a weapon by flowing chakra through it. Usually, elemental chakra is used to flow through bladed weapons to increase the sharpness dramatically. Wind chakra is usually used to increase sharpness, but lightning also provides vibration that can produce the same effect, with the addition of inducing numbness. Another meaning of chakra flow is flowing the chakra through one's body, such as A's Lightning Release Armor, to increase close-quarter combat offense and defense.

Asuma Sarutobi carries special Chakra Enhanced Trench Knives that absorbs chakra easier to create unique effects, which later fell into the possession of his student, Shikamaru Nara. He also taught Naruto Uzumaki the basics of this technique.

Trivia

 * Although Darui has yet to show any named techniques that involves chakra flow, he has infused his Cleaver Sword with lightning chakra to immobilize Suigetsu Hōzuki, as well as threw a lightning-infused shuriken to break a katana that Kisame Hoshigaki was holding.
 * During his final battle with Itachi Uchiha, Sasuke infused a Fūma Shuriken with lightning chakra to increase its sharpness.
 * In the anime, a ninja cat was able to use chakra flow through his claws to deflect weapons.