[ So Lancer continued to say, and Kirei grows more and more suspicious of it. ] Then you'll understand that I prioritize secrecy above all.

You are quite the abrasive Servant, and despite the consequences of our future [ or past, in Lancer's case ] there are no such circumstances binding us to one another now. I merely have the word of your supposed debt to me.

You'll understand that I need more than that.