[For a moment Archer rests his cheek against Caster's jaw, contact too brief to be anything but a light caress.]

Yes, I was Saber's Master.

[If anything, it does explain his knowledge about the Grail system. All the other questions it brings he choses to ignore.]

Anyway, the priest ordered his Servants to finish us and left. The golden Servant was too happy to do so, but- [here Archer tilts his head so Caster can see a hint of soft, bittersweet smile.] -you weren't. It wasn't anything personal, just a matter of beliefs. That's what you said.