"So the shoku's the storm...and it's people moving around that make it?" Hmm. Why's that, Tidus wonders--but it doesn't sound like Taiki knows even if he did ask. So it's curious, but not worth getting serious over.

"Is the sea of stars near the sea of clouds then? That's it, wasn't it? Like a sea around the mountains?"

It may not be a literal sea, but also, he remembers there being something fantastical about the way that Taiki talked about it.