Satsui no Hadō

Name: Satsui no Hadō (殺意の波動 - Surge of Murderous Intent)
Origin: Unknown
Type: Special Charateristic
Appearance: Those who become consumed by or have mastered the Satsui no Hadō have their eye color change. Both their sclera and pupil turns into a pitch black color while the iris becomes a hellish red. Their chakra changes from whatever color it is to a bright red.

Description: The Satsui no Hadō is a human phenomenon that is rooted in the darker aspects of the natural human instinct (including the desire to survive, trample, and impose over opposition), and on a metaphysical level, the natural occurrence and manifestation of loss, decline, and destruction.  To tap into the Satsui no Hado, a person must be so consumed with the desire for winning and perfection, be close to being killed, or else possess such intense rage and hatred, that they are willing to kill. As such, only people who push themselves to be the best at any cost can take full advantage of it, however, the untrained mind can be driven into insanity if they are not ready for it.

For the people who do succeed in controlling it, they become extremely powerful, but at the cost of losing their humanity and compassion; they develop a cold, negative outlook on life and a nihilistic detachment from themselves, as well as other people, and develop an abessive, dark, murderous (and even suicidal), desire to fight.

In-order to train the Satsui no Hadō, the user must do a training thread where one of the aforementioned traits become apparent and, thus, they tap into the urge. When trying to learn it, they must do 500 words. After that, they are considered to be novices of Satsui no Hadō. Afterwards, their next training of it must be 1,500 words. They are then considered to be skilled in controlling the Satsui no Hadō, and their Strength or Speed is permanently increased by 2 levels. Afterwards, they can fully master it by doing a 3000 word thread. Thus, they are considered masters of the Satsui no Hadō and their Strength or Speed is then increased another level, granting them a total of +3 levels when fully mastered.

After training the Satsui no Hadō for a second time, they are capable of using Satsui no Hadō related techniques and are capable of using the Oni Transformation. Once fully mastered, they can enter their Oni transformation without being consumed by the Satsui no Hadō and are now able to learn and enter their Shin transformation, showing their mastery over the art.
Those with the Satsui no Hadō are capable of sensing others with it and, if of a higher skill, can influence the emergence of it. If this is done during the training, the wordcount is reduced by 25%.

Requirements and Drawbacks: Those with the  Satsui no Hadō are seemingly incapable of learning things such as Ninjutsu and Genjutsu.  Users are only capable of learning Taijutsu, Senjutsu, and Medical Ninjutsu while Taijutsu must be their primary specialization. They are unable to learn Sage Mode. Also, the effects described MUST be apparent and happen to your character. If you don't want them turning dark and losing their compassion, simply don't train the Satsui no Hadō. They have a permanent -10% off their Health, even if they don't train the Satsui no Hadō. One must be at least D-Rank to learn the intial state, then B-Rank to train it, then S-Rank to master. Also, once one gets to the higher ranks of the Satsui no Hadō (B-Rank/Training it and up), their dark energy becomes so apparent that those two ranks below you and above can sense you once you're within a 10 meter radius, though they cannot accurate pinpoint you unless they have some sort of sensory jutsu. Those who become consumed by the Satsui no Hadō are unable to master it and lose their minds to madness.

Techniques:
Gōki
Misogi
Oni
Shin

Chakra Cost: N/A