[He looks back to where the elements are encroaching on Mecchan and Hina's crumbling sandcastle, and the doubt is written all over his face.]

...

I don't know, Rinku-chan, I just can't imagine that. According to the Pokédex, they almost all live in natural habitats like animals and build nests at the most. But there's a lot we still don't know about the pocket dimensions in general, isn't there? Personally, I think they must've split off from proper worlds somehow. After all, we have people from the world of pokémon here, so the pocket dimension isn't a stand-alone existence.