... I see. [What else could he say to that? It was likely this happened when Waver was younger, and Takame apologizing would not bring his Servant back.]

This Grail grants incredible power long before the fight for it is done. [There's a hint of something sour in his tone. As he learned of this Holy Grail war he started to hate it more and more.

Though, speaking of Servants and getting away from the dank fish brought something else to mind.]

Is it common to see a Servant without a Master?