Yeah, I have. I'm kinda the Avatar, so I'm the spiritual link between the two worlds. The other Avatars' spirits are in the Spirit World too. But since this is a different place... can I still get into the Spirit World?

But aside from us Avatars, no one can get into the Spirit World normally. It's... complicated stuff. I did hear that my friend's uncle went there once, but I never really heard the details.