Kokushibo, perhaps the most illustrative example, embodies this principle perfectly. His ability to generate skin blades is not a complex magical construct but a direct, brutal extension of his ...

Kokushibo's birth name was Michikatsu Tsugikuni and the twin brother of Yoriichi Tsugikuni, deemed as the most powerful demon slayer ever. Upon awakening his demon slayer mark, Michikatsu feared ...