Chakra Blade

A Chakra Blade is a weapon made from special metal that absorbs the user's chakra characteristics. The chakra absorbed by the blade can exhibit power based on the user's jutsu. Asuma Sarutobi, Sora, and Shikamaru Nara use jutsu that require the use of a chakra blades like the Flying Swallow jutsu and Shadow Imitation Shuriken Technique jutsu. Asuma taught Naruto Uzumaki how to use the chakra blades during his Wind Release training.

Chakra Blades seen in the series include Asuma Sarutobi's Chakra Blades, which Shikamaru inherited after Asuma's death, as well as Sora's Chakra Enhanced Triple-Bladed Claw.

Trivia
In Naruto Shippūden 4: The Lost Tower, it was revealed that Konohagakure has a standard chakra blade that is used by some shinobi.