Dark Release: Black Hollow

To use this jutsu, the user will first gather all the chakra they have absorbed in the battle. (Excluding their own chakra) Then, the user shall thrust their arm in front of themselves, aiming at their target. The user will then send all of the chakra at the opponent, creating a giant blast of black chakra. Even though it is powerful from long and mid-range, it's much more devestating when the user is inches from the opponent.