[He actually gives her a skeptical look at the idea that she could communicate with someone in another area and he's about to ask how when she officially distracts him.]

I don't think it's because I'm smaller. [How dare you insinuate such, Rei. He's still growing, gosh.] But I wouldn't think there's a lot of air inside a volcano either. There's a big difference between that and a mountain.

[He pauses again.] I'd like to learn more about the planet before Vincere bought it and before Cerealia was formed. We're going to find more hints out there than in here, don't you think?