For many hundreds of thousands of years, the heart of the Plane of Dreams was shrouded by a layer of "boundary", and that dark screen that cut off all information flow totally enveloped the most ancient and mysterious sector of the universe. No one could know what was happening with the vision screen. Even when a few mortal civilizations had managed to reach the pinnacle of technologies, they only found eternal darkness at the heart of the universe. And the more fortunate ones (or rather the most unfortunate ones), they would by chance slipped through the visual screen and witness the truth behind the barrier, and without any exception, their minds were all destroyed by what they saw there and were reduced to outright insanity or outright monsters.
Thus, aside from the wardens of this prison, no one knew what the "heart of the universe" truly looked like.
