I would like to know if there are places in the game you can't go back to at some point? (Center of the world maybe?) Please tell me which ones if it's the case.
You can't go back to inside the flying machine, so if you go there, make sure to find the magical room there (and, you created two topics for the same reason)
You can't go back to the center of the world either. And you can't go back to Hyperbole Cave and Edelweiss Cave after you go to the center of the world and leave. You can enter Hyperbole Cave and exit as you need until you go to the Center of the World.
dee0227
Inside every older person is a younger person wondering what the heck happened.