Ordinary(?): "I'm human" he says as he defeats you...
Good Acting(?): Revealed to be unharmed whenever he wins
Before form, there's the intent/principle
Therefore, every swordsman had their own subtle minute differences even when they use the same principles based on their interpretation
自分 reached the Zenith of minuteness, each movement possessing a subtle quality that expands ad infinitum, similar to the infinite possibilities of a quantum field
A subtlety his foe/s misunderstands or fails to notice