We dont know what exactly is in Disney Castle yet. Also, I dont think Kingdom Hearts is the door to darkness. If it were, then Ansem would have kept on fighting Sora instead of being defeated when the door opened.kaizer21 said:I'll summarize.
Disney castle has a door just like that. It leads to the Timeless River world.
Timeless River has that door. It leads back to Disney Castle.
Kingdom Hearts IS the door to darkenss. Sora was wrong. Ansem was right.