Moon

The (月) is a central motif in a number of TYPE-MOON works. It is most prevalent in the works involving Vampires, such as Tsukihime and Melty Blood. It is not a planet, but it is still a celestial body that had an Ultimate One known as Type Moon. Within the world of Fate/Extra, it also holds the Moon Cell Automaton (ムーンセル・オートマトン), a large computer-like construct created by an unknown civilization one hundred million years before the existence of the Earth or the Moon. It has recorded everything that has happened on the planet since its formation, and it keeps the records much like Akasha. It acts as the main setting of Fate/Extra.

Origin
The moon was formed 4.5 billion years before the Age of Man according to, and, within the world of Fate/Extra, it is noted that the s that make up the Moon Cell were created 4.6 billion years before the Age of Man. The Moon Cell is the oldest known object in the solar system that has watched the Earth since its creation. The exact formation of the planets, and how the crystals were integrated into the moon is unknown other than that it was an observation device constructed by an alien civilization of non-human intelligent life. There was previously a kingdom lead by Crimson Moon, but it fell into ruin. He eventually decided to abandon it with the idea of turning Earth into his new kingdom. During the battle with Zelretch, Crimson Moon created a mirror image of the Moon and dropped it towards the planet. The event, known as the Moon Fall (月落とし), was stopped by Zelretch's magic. The event is known in the current era, as mentioned by Rin Tohsaka.

The existence of the Moon Cell is not known to normal humans, and only appears within Fate/Extra, where it is discovered in the 2030s during the Fate/Extra timeline. It has nothing to do with Crimson Moon, but his equivalent, the "Brain of the Planet", should still be living within the world of Extra.

Effects over Vampires
When Crimson Moon answered the call of Gaia over four thousand years ago in order to protect the planet against human corruption, vampiric creatures were created in order to fulfill the pact, the True Ancestors (which are based on his image and were created as a natural protective system for the Earth).

Since they're related with the moon, the lunar cycle over the Earth has effects on them. Granting to them more power than their normal estate and the same happens to their fallens (Demon Lords) and childs (Dead Apostles and related). Depending the lunar cycle the power increases.

A genuine example for this is Roa, who already has supreme regeneration from the deepest of wounds, and the effects of the moon only serves to increase it even more, but he states that if the moon were waning even the slightest bit, such regeneration would have been impossible.

It is unknown if those who became vampires using magecraft like Nrvnqsr Chaos are affected by lunar cycles.

A list of relations about the effects of lunar cycles on vampires:


 * Crescent Moon: True Ancestors and Dead Apostles reach a little part of their true powers, since their power are ascending.
 * Half Moon: True Ancestors and Dead Apostles reach a half of their true power.
 * Full Moon: True Ancestors and Dead Apostles reach the height of their powers.
 * Waning Moon: True Ancestors and Dead Apostles returns to that little part of their true powers, since their power are descending.

Moon Cell
The Moon Cell, called the Holy Grail and Eye of God, the Divine Automatic Recording Device, is a collection of photon crystals located within the moon. It is a giant mineral vein located within a extremely large hole, comparable to a crack that bore through the moon itself, with a depth of a few kilometers. The diameter of the crystals appears to be up to thirty kilometers, and it seems that apart from its surface portions, the moon itself is made up of a giant photon crystal. In the Fate/Extra universe, it was discovered by the Western European Conglomerate, which decided to name it the "Holy Grail", and they have essentially sealed off access to the Moon.

Photon crystals are a nano-substance that periodically changes its light refractory index. It is a substance that can control the transmission of light, allowing it to act as a quantum computer using the light itself as the media. Humanity has only managed to successfully crystallize a few centimeters of it since its discovery in the twenty-first century. The giant photon crystal slumbering beneath the Moon can be considered as a resonator of light with wave conductors, a super computer of giant size, incredible complexity, and processing power that cannot be measured that was created using nano-particles. Although most super computer development was abandoned in the 2010s in favor of shifting the focus to cloud computing, the processing power of the all digital media on Earth combined cannot hope to match the capabilities of the substance.

It scans the entire Earth about once per nanosecond and compiles the results of its scan in its database. It is a pseudo-intelligent being that has the supreme ability to affect the outside world with its internal scintillations. As an eye that observes the Earth, it acts as a database of humanity that faithfully simulates all life on Earth and is capable of providing a definite prediction of the future. It is a processor with a massive memory that has recorded the habits, history, ideas, and even the souls of humanity. It can be thought of as a pandora’s box that promises the next stage of evolution. It promises god-like power to those intelligent lifeforms who have become technologically advanced enough to scan the interior of the moon.

After it was discovered by the Conglomerate, it managed to hack into every system around the world and form a passage within two seconds of contact. This made all Internet inspection systems fall into lament, as the passage created from the systems the Moon Cell where anyone can log as long as they could connect to the internet.

The time of its initial operation is unknown, but an estimate based on radioactive carbon dating of its composing substance shows it to be older than the Moon itself. Radioactive carbon dating of lunar rock shows the creation of the Moon to have been 4.55 billion years ago, while the photon crystals were created 4.6 billion years ago. It is the oldest entity in the Solar System, which has been observing humanity since the birth of Earth.

SE.RA.PH
It's a artificial environment called the Moon Cell, other names are The Photonic Abyss and Angelica Cage, inside of a spiritual computer system called Automaton, probably discovered by Harway family (since Leonardo B. Harwey tells about his family has prevented space-travel to prevent anyone from landing on the Moon), which works like Akasha in the terms of "stores and archives", however, uses a system called Serial Phantasm or SE.RA.PH, which handles the summoning of Servants.

Beyond that, SE.RA.PH restricts the exit until the participants are reduced to one under the Moon Cell's rules. It's also responsible for the existence of the NPCs and all areas over the game. The area called Moon Cell, probably is a expression of the core's area, and the golden globe within the cube is the main core or the core itself.

Records all it observers. Nothing can be hidden from it, even the thoughts. Like an computer, reproduces what was seen and the subject act like it was seen. Can reshape the fabric of reality. Your existence it's since before the humans, or even the Earth. Beyond that, resembling Akasha, through the collected data, the Moon Cell can simulate results of future, but also, automatically erase irregular data.

According to Twice H. Pieceman, the Moon Cell's core is made of the purest type of photonic crystal, a material that can act like the crystals used on holography to recording media.

Areas
The landscapes generated by SE.RA.PH are all independent Reality Marbles, an extremely powerful feat. The school of the preliminaries, the school for the main tournament, the Arena, and the Coliseum are each individual Reality Marbles. Even the greatest supercomputer on Earth would be unable to sustain a single Reality Marble for any great length of time.

School
Tsukumihara Academy (月海原学園)

Coliseum
The elevator known as "Elevator to the field of honour" connects to the Coliseum.

NPC
The  within the Moon Cell are humanoid virtual lifeforms created to manage the Holy Grail War. They are artificial intelligence configured according to the program, things treated as "functions of programs" and "do not exist as actual beings." They perform only one task, and though they respond with personality, they are nothing more than puppets. They are merely mechanisms for the sake of allowing human lives to progress smoothly, and they are "not there" even when they "are" in front of someone's eyes. They are created from the Moon Cell's records of real humans that have lived in the past, and they simulate the personalities of them.

It also generates AIs and Advanced AIs, beings granted the capability for self-judgement. Advanced AIs are given the management of a section like "managing the health of the Masters." Advanced level AIs are created to efficiently promote the Moon Cell's primary objective of "human observation." They have been programed with souls to act as perfect reproductions of humans, but while they "are there", the contents of the souls are colorless. They have the ability to manipulate the Moon Cell in certain ways, such as repeating a day dozens of times. They cannot delete their memories, so they can only be transferred and reset.

It is possible for NPCs become self-aware, and it is even possible for them to gain the powers associated with Masters. Twice H. Pieceman speculates that his interactions with Masters and his skill as a Spirit Hacker pushed him into consciousness, but he also mentions the possibility of it being an anomaly born from a single near-impossibility. He also gained the advantage of being recreated once he died unlike regular Masters, but he cannot interact with the core of the Moon Cell because he is still considered an irregular data stream. He can fool low-level processes, but the core would detect him as an NPC instantly.

Both AIs and NPCs are created along with the commencement of the Holy Grail War and disposed of along with its completion, as the fact that only one Master will be left alive at the end even applies to the virtual lifeforms. They are recreated by SE.RA.PH with each new round of the Holy Grail War, and having been returned to zero, the Advanced AIs are allowed only to retain their personae. Any memories they gained are reset, and they are made to pretend that they never existed. Their absolute rule is "Improving one's functionality is not allowed", but BB manages to become a "hyper level AI" through her modifications.

Sakura Matou is an Advanced AI in charge of the health of Masters, and BB also takes on that role. There is a successor in case Sakura is deleted, Caren, who has a problem in her algorithm that makes it so she does not prioritize Masters' lives. She believes ordeals are more important than living, so Hakuno Kishinami's survival rate would drop to less than three percent in the first week if she were to be put in charge.

Known NPC Characters:
 * Issei Ryuudou
 * Father Kotomine
 * Sakura Matou
 * Taiga Fujimura
 * Sharon Tipps
 * Arina Savant
 * Journalism Club
 * Disciplinary Chairman
 * Class 5-10 kun

Far Side
There also exists the Far Side of the Moon, an imaginary space known as the trash bin that is used for storing malicious information. Due to his power, Gilgamesh is not allowed to appear on the Near Side of the Moon, so he sleeps there. Nothing else should be able to exist there because it is the territory of nil. It is not within normal time, allowing for a series of communications over eighteen days from Earth to take less than a microsecond within the timeframe of the Moon Cell.

Due to BB surfacing and gaining power as an Advanced A.I., she begins an extensive reconstruction and periods of resetting to work towards her goals. This allows for someone to contact Gilgamesh even when it should be impossible. The end result of her work is Cursed Cutting Crater, a real space in the present, past, and future. Establishing it as a "place", even Masters can exist there. It is not possible to hack the Moon Cell however much time is spend, but she is able to take control of it by placing herself in “unlimited time” through the power of the primordial goddesses she has taken into herself.

Tsuki no Sango
The Moon is the main focus of Tsuki no Sango, a world where the events of Tsukihime did not occur. It is about a time when the humans reached a crisis and the moon was a world of death for humanity, but humans still tried an immigration plan to deal with humanity's overpopulation crisis, The Lunar Immigration Plan. Since then, the moon became a new frontier, and its immigrants created a city, a nation upon the lunar surface.

But then a great disaster struck: humanity lost its "heart's fire". The desire for growing, expanding or excitement for invention. With this, the Moon's humans decided to abandon the Earth's humans. After 50 years of that tragedy, the Earth and Moon sealed their doors to each other, becoming entirely independent of each other.

Apparently, some decades later the light of the Moon disappeared and at the same time, humanity’s population on Earth also dramatically declined. The motive was simple: no one felt like propagating the species anymore. After these fifty years, humanity was to be extinct, if not for a group that still "keep trying".

Most of the Moon is covered by a sheet of ice. It's a blue ceiling that apparently protects the seven lunar cities on surface.

The Seven Lunar Cities
They are the cities were built on the Moon's surface. Covering the part that could be seen from Earth. The living beings of the cities are apparently dead. Actually, the seven cities were a huge grave.


 * First Lunar City:
 * Second Lunar City:
 * Third Lunar City:
 * Fourth Lunar City:
 * Fifth Lunar City: Matori, has a nuclear core that provides hydrogen to the seven cities.
 * Sixth Lunar City:
 * Seventh Lunar City:

The Other Side of the Moon
On the other side, the one that couldn't be seen from the Earth, has a gray forest. Trees made of limestone, a layer of ice covering the sky and within the center, a nuclear reactor providing the necessary molecules for hydrogen, carbon, oxygen and nitrogen.

Being the core of reactor, was the "Girl of the Moon". Her hands and feet were fused into the ground, her arms and legs discolored black; looking like a pillar extending from the ground wearing a dress. According to records, she was a silicon based body with the function to manage the planet with more efficiency, as it represents the Moon's soul, or more correctly, brain. While this "machine" was connected with the core and the moon, she was virtually immortal (cause she was operating on a different time scale from humans).

However, even if "it" was a representation of "life", if she abandon her position as machine, the Moon would return to its natural form. In the end, she will receive only the death through the time with that choice.