Surging Stages

Surging Stages (洶域, Kyōiki) is a technique invented by Kei Yotsuki, to amplify his astounding physical power even more. Modeled after the Eight Gates own powers, Kei notes this doesn't rival the Eighth Gate, not at its full power, and is more comparable to the Sixth or Seventh. By using bio-electricity to push the body, Kei can push the body to its own limits for more power, and for someone like him (with his naturally enhanced body) increase their power to frightening levels. As the name suggests, similar to the Eight Gates, there are levels to this technique, dubbed stages.

Usage
By using his control over his own bio-electrical fields, Kei pushes the powers of Lightning Release Armor a little bit further. Kei possesses 100% control over his brain, allowing him to remove his body's restrictions on its powers. This is very similar to opening the First Gate, giving the user 100% control over their physical power. This amplifies their power five times. This is called the First Stage.

There are six stages, and having them all active is referred to as the Supercharged Condition (超諭, Chōyū Kyō), pushing the body to an estimated 75-85 times its prowess. Still paling in comparison to the Eight Gate, this is suspected to rival the Sixth or Seventh Gate, with the same drawbacks. This can be mastered to the level of Masters of the Eight Gates, such as Guy, who could use the Seventh Gate with minor drawbacks. But in this case, the user is destroying the body slowly, and usually would result in death eventually with overuse, even with healing from medical ninjutsu, similar to Creation Rebirth.

Kei has managed to eliminate this drawback by using his nanites he received. Still he dubs it a kinjutsu for anyone else to use, due to this drawback.

This jutsu also allows for the usage of Lightning Release: Quick Flash: By using LRA's cloak as a field, the user is capable of transmitting all electrical impulses from their brain in a straight line directly to the part of the body they want to use, completely bypassing their nervous system. Allowing for them to react literally at lightning speed, as all it takes for lightning fast currents to get to their body parts. Due to the enhanced capabilities of the body in these stages, the body can handle this prowess.

Stages

 * First Stage: This bypasses the restrictions on the body, allowing for 100% usage of their physical prowess. Depending on the user, this can cause damning effects.
 * Second Stage: Increases the user's power and speed forcibly even more to 120%.
 * Third Stage: Increases the user's power and speed forcibly even more to 140%.
 * Fourth Stage: Increases the user's power and speed forcibly even more to 160%.
 * Fifth Stage: Increases the user's power and speed forcibly even more to 170%.
 * Sixth Stage: Increases the user's power and speed forcibly even more to 175%-185% (or even higher, depending on the user).

Trivia

 * Kei developed this after the Civil War, when he dedicated his main self to taijutsu and kenjutsu (except when important missions and matters occurred), leaving his clones to his other duties as Head Ninja and ANBU head, and to train in other areas.
 * Kei notes that this can be combined with Sage Mode, Steam Ninjutsu, Pressure Points of Harm and Death, or Eight Gates, to dominate in physical prowess completely.
 * Kei, while he can utilize all Six Stages at once without damage to his body due to his nanites, he uses it sparingly and not for extended periods of time, claiming that it consumes energy faster than he can recharge, or expends chakra faster than he wants (when it was done with Lightning Release). Kei is also one of the masters of this who can push their body past even 185%, but he says that is dangerous to maintain as well.