"Tomorrow," Roman echoes with a nod, "If, uh, well nothing goes wrong." They haven't gotten anything ready for next rayshifting so it's fine they can use the summon system. Even if it fails, or if Lord El Melloi II summons someone else accidentally, he doesn't see the harm in this. Chaldea needs all the help they can get.

"You're welcome, although I can't say I was very useful." How can he admonish him about having feelings? Right, the nature of Servants is transitory, but so is everything in life. He was a Servant ten years ago, so his perspective is different from most people.