Hidori

The Hidori is a high concentration of fire chakra around the user's hand.

Overview

The Hidori was created by Hayden Akuma after he failed to apply his fire-nature to the Rasengan.[5] He intended for the Hidori to be a weapon used only to protect friends and loved ones.

To perform, the user first gathers fire to their hand; The fire chakra has been shown on occasions to damage the user's hand, peeling the skin and causing it to smoulder slightly, but this does not appear to actually be debilitating.[8] Once the chakra is gathered, users charge at their target and thrust the Hidori into them, piercing them and typically causing fatal damage. Despite the sound it makes, the rapid speed at which it's used makes it useful for assassinations.

The speed at which the Hidori is performed, despite being one of its greatest assets, also represents one of its biggest drawbacks: users move at their target so fast that its causes a tunnel vision-like effect for them

The Hidori requires a large amount to chakra to be performed, placing a limit on how many times it can be used per day. In Part I Hayden Akuma could use it twice while in Part II Hayden could four times.