“―Fuuun, unfortunately, Caster's not around...”

Probably, there was no problem for a Servant's eyesight even within this complete darkness. Rider coughed absent-mindedly. He had said that in a strangely low tone, probably because of his disappointment at letting the enemy escape, but at this time, Waver did not realize as well.

- Fate/Zero: Act 8, Part 3