The specific concept of the "collective unconscious" can be found in Jung's writings, where the discussion focuses on how the "collective unconscious" as the existential intention of human beings is detached from (in that view it seems to be a betrayal) of the "Gaian consciousness" as a natural will.

First of all, we can imagine living beings, including humans, as a kind of continuous "superorganism" according to each species: the individual is only equivalent to a single cell, and the birth and death of the individual are only the organizational renewal of this "superorganism".

Then we look at the phenomenon that this "superorganism" has almost no memory, because it has no part of the "brain" for processing memory, and is in a very low species in terms of biological characteristics.

So each species is like a person who keeps losing his memory, and every time he wakes up he finds himself in a strange place, so every time he repeats the same behavior - so that "Gaia" or our planet has a stable ecosystem and a power source.

The key to the liberation of the desire to survive lies in the emergence of "civilization" - the original sin of Adam and Eve in Christianity who ate the forbidden fruit.

Civilization is essentially an "externalized gene", such as the concept of meme, which is well known in our time.

Continuing with the metaphor of the "superorganism" above, we can assume that the reality is that the human species starts out as a human being with constant amnesia, just like any other species, and then one day the person discovers that he can record his memories externally (whether it is a clay tablet, bamboo slip, paper, or even a sound medium such as language) so that he does not have to repeat the detour he took last time after he has lost his memory.

-- In this way, each generation retains the fruits of its exploration of the world before death, and the next generation inherits this "memory" and continues to develop it, so that people have an indelible inheritance through "external memory".

According to the setting of the worldview of the moon, if it is predicted as usual, human beings should eventually evolve into the Ultimate One of the earth, that is, Type: earth, but at some point human beings began to deviate, and as a "human" who is subordinate to the will of nature, they have gone on a "path" that deviates from the will of nature, and this is the beginning of the spiral of contradictions.

The "Alayya" was originally part of the "Gaia", but then it was separated from each other, relying on the intellect generated by the highly developed human brain. There is a subtle difference between the two major inhibitory forces at the root: for Gaia, it doesn't matter what happens to humanity as long as the world is fine, and for Alayah, even if it wants to erode the entire planet, it is necessary to ensure the survival of humanity.

The reason why the two have been in peace for a long time is that for human beings, if the planet is destroyed, they will not survive unless they develop the technology to survive independently of the planet, which turns out to be the case.

When "Gaia" realized that humanity had destroyed the planet and was too weak to erase humanity, he sent a distress call for UltimateOne in the solar system before his death.

To sum up, the Moon work with the theme of "Alaya Consciousness" is the "Fate" series:

The "Seat of the Heroic Spirit" is the ontology of the "Arya Consciousness" (doubtful), and the "Heroic Spirit" is the tentacle of the collective unconscious.

The recurring motifs of myths and epics in our history (with reference to mythological works such as The Hero with a Thousand Faces, etc.) are examples of the existence of heroic spirits in our collective unconscious, as well as recurring heroic motifs in theatrical theory.

The process by which mortals accept the mission of the collective unconscious and become heroes is very intriguing, and this situation is essentially the same as the "mad love at first sight", which is what the world calls the "messian** knot".

Mencius's "who else can I be" and Joan of Arc's "Holy Spirit Calling" are essentially the result of the collective unconscious invading individual consciousness.

Just as an ordinary worker bee accepts the mission given by the soul of the swarm and transforms into a queen bee (drinking royal jelly), the hero is initially a mortal. Ability has never been the primary consideration of being a hero, but only plays the role of icing on the cake - although being chosen by the Alayya will definitely increase his own ability (so-called stimulating potential or something) - the hero can charm the people because he speaks with the voice of the entire human race, so it is like hypnotism that people cannot refuse.

As a hero and a king, one of the most important qualities is not intelligence or physique, but "strength". Unconsciously, people have gained a very deep understanding of the attribute of the hero - that is, the capacity of the collective unconscious that the individual human being is able to receive.

The setting of Valhalla is believed to be taken from the Valhalla of Norse mythology, where the legend has it that fallen heroes would be led by the Valkyries, drinking and training every day until Ragnarok arrived. (Actually, this is to brainwash the Nordic warriors and send them to death)

There are some highly divine exceptions to the "Heroic Spirits" (such as demigods such as Gilgamesh or Hercules), but they are actually more inclined to "Gaia" than "Alayya" - for "Gaia" there are also agents of Heroic Spirits similar to "Alayya", in addition to the True Ancestors who are self-sealed by the defects of the so-called blood-sucking impulses, the agents of "Gaia" are also fantasy species called "Guardians" or some of the above-mentioned Heroic Spirits.

Here's a possible example: the red dragon on the Welsh flag symbolizes the kingship of England (Artoria's surname Pendragon has a similar meaning to the "dragon king"), the red dragon was first a symbol of the local Celts, and later became the guardian of Britain, and legend has it that the red dragon would appear to protect England when Britain was in great crisis, so King Arthur is said to be the embodiment of the red dragon (the red dragon represents the Welsh, and the white dragon represents the Saxons).

This kind of "guardian" who relies on the land is actually the substitute of Gaia in Nasu's setting, and the fantasy of "dragon" will appear as a legend when a certain land suffers a great disaster (that is, a disaster that cannot be solved in an unobtrusive way).

In addition, the transformation of polytheism into monotheism can be seen as the independence of human beings from the subordination of natural will. As a result, the polytheistic gods (such as the god of fire, the god of the sea, the god of the mountains, etc.) representing natural phenomena became the only god representing the collective unconscious.

The earliest entertainment work I know of that deals with this idea is Miura's Legend of the Sword Wind, and the so-called "god of the abyss" is the collective unconscious.

It is able to weave destiny because it is the human unconscious - so that the chosen one will unconsciously receive Behlet, and others will help him unconsciously, so that everything seems to be a coincidence, or "fate" in the name of "fate".