[Momo gives a bit of an excitable grin and nod at what she first mentions, because he's met some here who are immortal or close to immortal himself. It's not something he can easily conceive of...but that tension in her body language speaks a lot even before she continues, and his expression settles back to something a bit more sober.

And then, as she describes her world's situation, it shifts even further, into a worry and something like surprise, something he hasn't yet heard of. This is definitely its own unique situation from anything he's heard from others here, and with how she ends it...

...there's a lot of questions that come to mind, but the first one feels obvious.]

So are you a Reliver, then...? That sounds... [Having to die in order to come back, to live, to know a hard limit exists on that life as well and it's younger than even Momo's age? It's a lot to digest, but he's doing his best.] What would drive Death to condemn a whole island to that, with no hope of escape?

[What does it achieve? Death is something he considers as more of a neutral, a fact of life, so hearing about something that seems calculated and sadistic like that is something he can't help but want to ask after. He always wants to try and understand the whys, even if he doesn't agree with them.]