A sun god. Tidus barely gets what gods are in the first place, but he can't see what a sun god would do. Make sure the sun always shines? --but that's far from worth asking about right now.

"It was really...big?" Does that help. Probably not, but he doesn't know how to imagine this guy and his houses either, so- "It looks like a giant...mountainside," he tries better. "Like off the side of one - 'least, the place I saw. There were waterfalls everywhere, and flower fields. And a large sea? And I guess dead people just...live there, or something. Sleep there?"

He doesn't have a clue. Has tried thinking about it, but also not too hard.