[It's true, Rin can't know anything for sure. But he's an optimist, sometimes naively so, and he's taken it upon himself to share that hope with his friends, to keep them from despairing, if that's all he can save them from. It's the least he can do for the people he owes so much to.]

We stay strong. [He finally starts, quietly, but still forcing some energy into his voice.] Together, doing the very best we can to stay safe, until we find the way out.

[Rin gives his shoulders another squeeze, and a bit of a shake, too. Look at him, Rei.]

You are not the type to give up, Rei. Not the type to get caught up with your feelings and lose your head. [That's more Rin's territory, not that it needs saying.] Like hell I'm gonna let you start doing that now.