Midnight Thunder

Midnight Thunder (半夜雷, Hanyarai) is noted to be an advanced form of Black Lightning and the opposite of Heavens Thunder.

Overview
Using lightning empowered by the dragon's yin chakra, the user finds their lightning easier to shape, maintain and overall control. With Denji's refined centuries old control, the user is able to utilize a very fast style of lightning and still retain a lot of control. This is because of the yin concentration (or imbalance), which allows for extra shaping and manipulation, similar to standard Black Lightning.

Those are not Midnight Thunder's only abilities, as this yin energy transfers to the heat/radiation, vibrations, etc that the lightning itself emits, allowing the user more control over things their element produces as well, more advanced control than usual. This also extends to plasma created, or any other type of lightning (dark, positive).

This lightning chakra also has powerful genjutsu capabilities, even stronger than Black lightning. This is due to the yin concentration yet again. Being near ((even at mid range) it can be enough to subdue a target under generic genjutsu. By spreading this chakra into the air, the range of the currents' genjutsu is increased. This can also allow for an enlarged playing field, with more currents to manipulate over a larger area.

This is noted to be even stronger than regular Black Lightning, due to the use of Denji Ryū, better known as the Kiba swords. So it is assumed it has an enhanced power to pierce through and shock the physical form due to attacking the yang.

Improvement
It has been theorized that this and Heavens Thunder can be combined for perhaps a stronger Silver Lightning. This has yet to be seen or given a name however.

Trivia

 * This was made to be the opposite of Heavens Thunder, as explained above.