This jutsu creates dark snakes that forcibly connect with a person and inject them with medically altered chakra. This extra chakra will allow the user to utilize high level element ninjutsu. It also allows the user to use elemental techniques that they wouldn't be able to master normally. The chakra is not infinite, and must be replenished overtime. The person injected with these snakes can also force the snake out, and drink the chakra directly, vastly increasing their chakra and power, but results in their body being highly unstable.
The dark chakra snakes can also be used against the opponents. By injecting them with the same chakra, it can either paralyse or kill without leaving a mark.

Users
Yomi
Kusuna

Classification
Ninjutsu, Kinjutsu

Class
Supplementary

Range
Short-range