The world we live in is like a book that has yet to be opened. Different dimensions and planes of time and space form its pages, stacked one on top of another. It looks like a single world, but once the book opens, you will discover that our world is only one page of it.
Some say that the Thirty-Three Heavens Beyond Heaven, the Nine Springs of the Netherworld and their Forest of Judgment, and the Eighteen Layers of Hell all exist. They are merely hidden from view, beyond our ability to discover for now.
At last, one day, alternate planes of existence as numerous as the grains of sand in the Ganges began appearing around us, and the Book of the World slowly began to open. The Thirty-Three Heavens Beyond Heaven, Mount Olympus, the Eighteen Layers of Hell: everything began to emerge, little by little!
Countless secret realms appear in our world every moment, like parallel worlds waiting for people to explore them. Those who enter these secret realms to explore are known as secret realm apostles!
