Fire Release: Demon Flame Eruption

Fire Release: Demon Flame Eruption is Fire Release technique that can only be used by those who use dark chakra instead of normal chakra. This technique allows the user to release a large quantity of flames from their mouth to cause a variety of effects.

Description
After forming the necessary hand seals the user gathers dark chakra in their lungs and superheats it to create black flames. The created flames are then expelled from the lungs and out the mouth in the form of a large stream of black-colored fire. Any flame that comes touches the stream is absorbed to increase the power and size of the stream. When it comes touches the user's target the stream will engulf the opponent in black-colored flames, absorbing a bit of their chakra and creating a crater beneath them as they are burned in proportion to how the amount of dark chakra that was used. Like the techniques counterpart, the power and size of the stream can be changed by changing the amount of dark chakra that is used.