Black Lightning

Black Lightning is a unique form of Lightning Release created through the Inazuma Clan's Black Lightning Seal. It is created through a combination of lightning chakra and a specific type of Natural Energy. The resulting techniques that can be produced from it are noticeably stronger than regular lightning chakra, and take on a jet black color. This is due in part to the technique possessing a much stronger form of chakra, but as well as this, Black Lightning possesses a single property that makes it stronger than regular lightning chakra. This unique property lies in its electrical current, which is exceedingly stronger than regular lightning chakra, bringing it closer to the level of natural lightning. Because of this, it is much more dangerous and can lead to a myriad of other electricity-related injuries. Still, its power cannot even begin to compare to true lightning.
Interestingly, because the Black Lightning Seal does not interact with the body's own chakra, and its techniques are created only through the seal: Black Lightning is not projected through the body like regular chakra natures. Instead, it is projected directly from the Black Lightning Seal and around the body like a kind of aura.