"But that's just it. When the world was chaos and starting to fall apart, there was water everywhere. It's all vanished since Sora restored the worlds."

"Not really. There were springs everywhere, always flowing from the highest points in the islands. There were some falls I remember on the island I played on. It was one of only two springs that didn't come out hot. No clue why, but it might have to do with the caves on the island. The water might be hot enough to push up what's above it, but what's above was cooled by caves we never found." A hint of nostalgia came across his face, managing to tug a corner of his mouth ever so slightly upward. He leaned his head back against the wall, looking towards the ceiling. "We all liked to cool off under it if it was a really hot day and we'd been sparring or running around."

Riku looked back forward again, providing a more straightforward answer. "Any streams were always because of the springs."