"You mean... if they don't right now?" Well, that's not a heavy question at all. Roxas falters. It's not something he's really dealt with before, unless you count how Axel wanted to go back home so he could give his life for Sora. But he thought he was protecting someone. It wasn't that he wanted to die.

"...it's probably really hard. Like getting your heart back. ... You're not- talking about you, right?" Saix may not be the most enthusiastic about living, but Roxas is pretty sure he's not interested in dying.