Warning: to understand this you have to have vast knowledge of street fighter, you have been warned.
I am a master of the killing art ansatsuken.
Ansatsuken means: 'assasins murderous fist'.
Ansatsuken is extremly difficult art to learn which when used by an experiaced practioner you can kill an opponent in a single strike.
The art work by the practitioner turning their ki/chi into a physicly destructive force.
There are two main types of ki/chi in Ansatsuken:
-positive energy, the type of energy found in those who are considered to be good people, those who fight for a good cause.
-negative energy or satsui no hadou (surge of intent to murder) , found in those who are considered evil, those who fight for themselves alone. Some may be temped to give into the vast power this energy offers, but its path is often accompanied with blood.
Another trait is they simply live to fight to the death, many consider them evil for killing whoever they fight but as they put it "its killing intent, not evil intent" (geddit)?Edited for incredibly poor taste. Please think before you use references like that, DCM.
Good story, eh? made it up as I went along