Combat skill, usually aimed at subduing the opponent, focuses on the application of techniques and the control of power.
Killing technique, on the other hand, pursues the efficiency of breaking defense with a single strike, emphasizing the instant release of extreme explosive power.
Considering the current environment of the Wasteland, the killing technique was popular only in the early years of the New Era, but once humans rebuilt the industrial system, it quickly became marginalized and almost ignored.
The root cause is that the efficiency of close-quarter combat will never match that of pulling a gun.
In situations where firearms can be used, killing techniques have no place.
And in scenarios where you can't draw a gun, basic combat skills are sufficient, there's really no need to waste energy on being reckless and aggressive.
Staying alive, hanging in there, that is the main theme of survival.
