For WishingFire's 100 Themes Challenge

Disclaimer: I do not own Kingdom Hearts nor associated properties. I make no profit from use of this work.

Universe

Yen Sid saw me slip outside last night, so I mentioned seeing that shooting star. He got a serious look and said shooting stars were usually travelers between worlds.

It wasn't anybody from our group, and using darkness to travel is out.

There are only a handful of people who can go between worlds, not all of them good. He wants me to look into this, to see if I can find out who it was.

If it isn't one of the bad guys, then it could be an ally. But how is that possible? The old wizard doesn't know.