“Could this be the idea of ‘hearing’ a move?!”

Kiritsugu only had a vague impression of this phrase. Some schools of martial arts thought that when a martial artist had reached a certain state in his skills, he wouldn’t need eyesight to detect the enemy’s movement. He could predict the opponent’s next move purely on the brief moment when his arm blocked that of his opponent.

- Fate/Zero: Act 16, Part 6