[Rei stares incredulously at him for a moment, then nods slowly. He doesn't really believe it was fake, doesn't think, if Rin had seen it, that he would think it was fake either, but he understands what Rin is trying to do. He's trying to keep him from panicking, keep hope alive.

Rei's grateful for that, even if he thinks Rin is full of shit.]

You could be right, Rin-san. We shouldn't rule it out as a possibility, at the very least.

Still, I want to tell the others. Just to be on the safe side. [Tonight, once they're all together.] I'm glad we've already set up shifts for keeping watch.