The Human Domain, or "Ningen Domain" (ニンゲンの域), is not just the domain of humans, but the domain of those tossed around by fate, the first Pole/Side. This includes humans, Yokai, ghosts, higher-dimensional beings, aliens, etc.
While the Humans don't have the power to create anything, they have the ground under their feet. This means that Humans don't need to actively define their existence (like higher order beings), and can go day to day without the fear of losing one's self. They also don't evolve through the layers of the Human Domain, as their only form of evolution is into a Higher Order being into the Witch Domain. Humans aren't even aware of the layers of their Domain or about the complexity of their reality, they are pretty much watching the shadows on the cave's wall without knowing of the existence of the fire behind them, or of the world outside of the cave.
As already mentioned, the superiority of the Domain of Witches over the Domain of Humans is compared with the superiority of the 3rd Domain over the Domain of Witches. Accordingly, they should have a similar internal structure. Then it is logical that the domain of humans should also be a similar hierarchy.
Higher Dimensions
As I've said previously in the introduction segment, in some cases layers themselves are divided into multiple dimensions, and this is something specific to the layers of the Human Domain. But before getting into that, I'll prove that those dimensions are quantifiably superior to lower ones, as according to the Wiki's standards.
So, not only is something from a higher dimension superior to something from a lower one, but it is to the point that even something infinite in a lower dimension would be non-existent for those in the higher dimension.
Is one of the “guardians (Jedas)” who monitor the immigration situation of their fellow “Ryūn people” who crossed the fifth dimension wall to live in the current world.
Is she a divine existence descended from a far higher dimension than the person world.
So in the Human Domain's layers, we got higher dimensions, and the hierarchy of layers would multiply the complexity of such things.
Complex Quantum Structures
I've mentioned previously the word "Catbox" without ever explaining it, but now it's the time to do that. A Catbox is a complex quantum structure based on the famous concept of Schrodinger's Cat.
By the way, the story I introduced this time introduces the difficult problem "Schroedinger's cat", which is well known in the world of quantum mechanics, with the poor writing skills of Dragon Knight 07.
"Is the cat in the box alive or dead?"
In front of you, there is a "box of cats" with unknown life or death. Inside this box, live and dead cats are sleeping "living and dead at the same time".
“
You probably know that sides of a die go from 1 to 6.
You can predict what number will come up when you throw a die, but with logic, you can find out that the most likely outcome is 7 when you throw two dice and 14 when you throw four.
Now, if we return to the starting point, the question is what is the average when you throw one die. Coming from what we figured out, several numbers are most likely to come out.
“The number that will most likely come out is 3,5”. There are probably quite a few people who will come up with that conclusion.
However, a die only has numbers from 1 to 6. In other words, it’s not possible to get 3,5. Probably, a die that has a side with 3,5 isn’t sold anywhere.
I guess some people will try to get close to 3,5 by throwing a die multiple times, but it’s “an average you get when you throw several dice”, not “a die”.
The numbers on the sides of dice are from 1 to 6, and the probability of getting each number exists at the “same time” equally.
Like in a game of odd and even, you put die into an opaque cup. What number will die inside a cup show?
I’d like to say it’s 3,5, but that number isn’t carved out on a die. Which means, there are 6 “worlds” inside a cup, each for one side of a die. This hypothesis of 6 worlds existing at the same time is called “Many-worlds theory” or “Everett’s theory” in quantum mechanics.
※This “Many-worlds theory” speaks about “probable worlds” that exist at the same time, not about SF stuff like on more Earth on the other side of the Moon… (In other words, it doesn’t mean that just because you can get any number out of 6, there are 6 different Earths in this world).
„~ Ryukishi07's working diary
The Catbox contains infinite Truths, here "truth" meaning universe. Those Truths take the form of Wave Functions and exist simultaneously at the same time, even if they contradict each other.
The concept of the Catbox is also called "Multi-Layered Worlds", which could hit back at the layered hierarchy of the Kakera contents.
Japanese version:
...You forgetting, miss. Multi-layered World Contraction. The power of an Endless Witch paired with the power of a Finite Witch. Only an Endless Witch can realize it, and it is the most powerful effect on Endless Witches.
Multiple Catboxes exists throughout all of 07th Expansion, like Beatrice's Catbox, Bernkastel's, or Hanyuu's.
A higher narrative dimension
There seems to be a higher dimension above the normal ones where the story of the human world is stopped, and Pieces of Higher Beings can fight using abilities such as Red or Blue Truth. Normal beings aren't aware of the existence of this higher dimension.
The World of the Yokai
Yokai are spiritual beings, and as such, they exist in a different world to that of normal humans called the Spirit World, which is a different dimension to that.
Renoir and the worlds of fiction
Renoir of the Artroom is a Yokai that hunts by taking his victims into the worlds of the paintings in the Artroom. His power, to dive into 2-D (2-D from the normal world's perspective, as we'll see soon) is a power of the Gods, of the Higer-Order Beings, as Humans can't travel those fictional layers.
The main way Renoir uses his powers is through paintings, which, while they appear 2-D, they actually have their own multi-dimensional world based on the painting... like the non-euclidean world of M. C. Escher's Ascending and Descending, where the victim would run endlessly on the stairs without ever reaching the next floor:
But Renoir powers don't only work on a painting, but anything that is fiction. Comics, manga, and books works too:
All of this is in line with what we saw in the section about Kakera. Human fiction from a world have their own worlds on a lower layer from the main one.
Kyou and the boundaries between worlds
Kyou is a Yokai with the ability to travel on the border between Worlds and into said worlds. Is an ability specific to Higher-Order Beings, and him being a Yokai, a being of the Human Domain, makes him quite special.
Anyway, the first time we see Kyou in action is with the Worlds of the Mirrors, like how his pseudonym, Kyou of the Mirror, is. Different worlds reside behind each mirror, worlds where everything in nature/creation - Shinra Bansho (
森羅万象), exists in an opposite state. Those worlds have the same structure as the main world, even their own versions of the beings from the main world (Yokai included), but reversed in some way (like personality, for example).
Besides that, something may be reversed. ...... After all, the mirror controls all kinds of things, everything.
Those mirror worlds also have their own mirrors, which also lead to different mirror worlds, and this recursion continues on forever. An infinite number of mirror worlds are obtained from a finite numbers of mirrors.
But that's not the only border between worlds that Kyou can access, he can access also the border between Reality and Dreams, the world of Daydreams. World, because even dreams and daydreams are their own world, with their own versions of the real world (Yokai included).
This is a bit of a more weird world from reality, where even ghosts can interact with living humans.
And as I've said, the world of Daydreams has its own versions of the Yokai, including Renoir, who can transport beings into fictional worlds, meaning that even the fictions of the Daydream are their own worlds on a lower layer.
This opens the possibilities for an endless recursion of lower worlds, as fictions and dreams of one world exist as their own on a lower level, and so on. The recursion from the mirror worlds would also greatly increase this chain too, as this principle of dreams, daydreams, and fictions should apply to those mirrored worlds too because they have the same structures as the main world.
The World of Gaap aka the Underside of the Gameboard
The Underside of the Gameboard is a void without the concepts of time and space, beyond all the time and space of the Human Domain. It is the boundary between the Domain of Humans and the Domain of Witches, and it's impossible for humans to access it.
Recap
- So, as we had seen, the Human Domain is its own hierarchy of layers
- Those layers are the fictions made by the beings of this Domain, anything from paintings, to books, video games, and even dreams or daydreams
- The fictions that make up those layers have their own complexity, with quantum structures such as Schrodinger's Catbox, or higher dimensions
- All of this is caped up by a void without the concepts of time and space, that exists above all time and space of the Human Domain.
