Black Kyōkugan Seal

The Black Kyōkugan Seal is the first of the Kyōkugan Seals. Releasing this Seal releases the Shadow Chakra stored in chakra points connected directly to the Gate of Life. This is one of the many reasons the Kyōkugan can't be implanted into a person that is not from the Hiroshino Clan. It can’t be implanted because of the fact that the normal shinobi does not have the chakra points connects to the eight gates.

Description and explanation
The eyes of the user turn completely black and a dark grey ring appears around their eyes. Black Chakra (Shadow Chakra) forms around their hands and feet. This happens because the other kyōkugan seals are preventing the amount of shadow chakra needed to engulf their body from generating. The chakra forms around their hands and feet because that’s where the shadow chakra generates normally on their body.

Taijutsu
By releasing the Black kyōkugan Seal they are only able to perform one extra Taijutsu,Shadow ThunderStrike.

Users
•Satoshi Hyuga

•Rei Hiroshino

•Satoru Yuro

•Noriyuki Hiroshino

Facts
•the first shinobi to ever have the Kyōkugan was able to open the first seal without opening the third inner gate.