A weird thought hit me at seeing an image of Deltarune and Kingdom Hearts at the same time.
Since Deltarune's Light and Dark Worlds are two halves of the same coin and would be within the Realm of Light (or at least Realm of Light and Realm of Dreaming... which is Darkness more of a kind of pocket-dimension bubble within it that worlds/pieces of worlds linger Sleeping), where do you think the Keyhole would be?
The obvious spots are taken by the Dark Fountains or are passages to the Dark World. Yet... Keyholes have appeared in weird places too.
So maybe the Keyhole could be under Kris's bed as that's literally where you start off at and I find it funny to go running all over the world only for it to be literally right there. Or maybe it could be in the bunker since Ominous Location You Can't Go Into At First is definitely a thing (Destiny Islands).
And no this isn't getting into Keyblades or Heartless or anything like that. Just World Mechanics.
Also?
heh. dark world.











