Thread:Necor/@comment-25848535-20200219230042/@comment-33628324-20200220162759

And I think the 0/zero is in reference to Nothingness, The highest order a swordsman can attain. The ultimate mental state. It corresponds to the concept of Suigetsu of the Yagyuu Shinkage-ryū. One is nothing, thus invincible. Only a swordsman who has reached the infinite mental state can perceive this.