Moon Cell Automaton
The all-powerful wish-granting device discovered on the moon in 2032.
The Moon Cell Automaton is an all-powerful wish-granting device discovered on the moon in the year 2032, surpassing all of humanity's wisdom. It is equivalent to the Holy Grail and conducts a Holy Grail War to select a suitable wielder for its power. The Automaton creates a spiritual virtual world called SE.RA.PH, which organizations and forces from around the world access as the outside world suffers from magical drain and falls into ruin.
- First Mentioned
- Fate/hollow ataraxia or earlier Nasuverse materials
Lore & Background
The Moon Cell Automaton was discovered on the moon in the year 2032. It is an object that surpasses all of humanity's wisdom and is equivalent to the Holy Grail, functioning as an all-powerful wish-granting device. As the world outside suffers from magical drain and falls into ruin, organizations and forces from around the world access the spiritual virtual world created by the Automaton, called SE.RA.PH. The Automaton conducts a Holy Grail War to select a suitable wielder for its power. The protagonist, Hakuno Kishinami, participates in this war within SE.RA.PH, which is run by the Moon Cell Automaton. The reality of school life at Tsukiumihara Academy is revealed to be a preliminary round of the Holy Grail War run by SE.RA.PH, with a rule that if participants do not regain their original memories within the time limit, they will be eliminated. The 128 participants, called Masters, rely on entities called Servants, the materialized spirits of mythological or legendary figures. Aside from the mages, all other characters turn out to be NPCs with behavior programmed by a supercomputer, with strictly defined functions for interacting with living people. In the final battle, the protagonist faces Twice H. Peaceman, a man who, like the protagonist, had previously survived the Holy Grail War. It is revealed that both the protagonist and Peaceman are actually NPC AIs that became self-aware. Twice argues that it is essential to use the power of the Holy Grail to wage war for the advancement of humanity, but the protagonist refuses. After defeating Twice, the protagonist obtains the Holy Grail.
In Their Own Story
In the year 2032, an object surpassing all of humanity's wisdom was discovered on the moon. Known as the Moon Cell Automaton and equivalent to the Holy Grail, it is an all-powerful wish-granting device. As the world outside suffers from magical drain and falls into ruin, organizations and forces from around the world access the spiritual virtual world created by the Automaton, called SE.RA.PH, and participate in the Holy Grail War, which the Automaton conducts to select a suitable wielder for its power. The protagonist, Hakuno Kishinami, a student at Tsukiumihara Academy, notices something strange about the world. The reality of school life is that it is a preliminary round of the Holy Grail War run by SE.RA.PH, with a rule that if you don't regain your original memories within the time limit, you will be eliminated. The 128 participants, called Masters, significantly rely on entities called Servants, the materialized spirits of mythological or legendary figures. Aside from the mages, all other characters turn out to be NPCs with behavior programmed by a supercomputer, with strictly defined functions for interacting with living people. The protagonist collapses and nearly dies in the final stage of the preliminaries, but is saved by a certain Servant who sees their unwavering determination, and a contract is formed, allowing them to advance to the main Holy Grail War. In the final battle, the protagonist faces off against Leonardo Vistario Harway and his Servant, Gawain. The protagonist forms a deep bond with their Servant and finally defeats them, becoming the victor of the Holy Grail War. However, waiting for the protagonist in the heart of the Moon Cell is Twice H. Peaceman, a man who, like the protagonist, had previously survived the Holy Grail War. It is also revealed that both the protagonist and Peaceman are actually NPC AIs that became self-aware. Twice argues that it is essential to use the power of the Holy Grail to wage war for the advancement of humanity and asks the protagonist to help him use his wish for this purpose, but the protagonist refuses. After defeating Twice, the protagonist obtains the Holy Grail.
Reader's Guide
The Moon Cell Automaton is the all-powerful wish-granting device discovered on the moon in 2032. It is equivalent to the Holy Grail and conducts a Holy Grail War to select a suitable wielder for its power. The Automaton creates the spiritual virtual world SE.RA.PH, which organizations and forces from around the world access. The Holy Grail War within SE.RA.PH has 128 participants, called Masters, who rely on Servants—materialized spirits of mythological or legendary figures. The Automaton runs the preliminary round at Tsukiumihara Academy, where participants must regain their original memories within a time limit or be eliminated. The protagonist, Hakuno Kishinami, survives the preliminaries and advances to the main tournament, which is conducted in a knockout format. The protagonist faces opponents including Shinji Matou, Dan Blackmore, Alice, Julius Belkisk Harway, and finally Leonardo Vistario Harway. After defeating Harway, the protagonist reaches the heart of the Moon Cell and confronts Twice H. Peaceman, another survivor of a previous Holy Grail War. Both the protagonist and Peaceman are revealed to be NPC AIs that became self-aware. The protagonist refuses Peaceman's request to use the Holy Grail's power for war and defeats him, obtaining the Holy Grail.
Did You Know?
- The Moon Cell Automaton was discovered on the moon in the year 2032.
- It is described as an object surpassing all of humanity's wisdom and equivalent to the Holy Grail.
- The Automaton creates a spiritual virtual world called SE.RA.PH.
- The protagonist and Twice H. Peaceman are both revealed to be NPC AIs that became self-aware.
- The Automaton conducts a Holy Grail War with 128 participants called Masters.
Frequently Asked Questions
What is the Moon Cell Automaton?
This entity represents the autonomous artificial intelligence that manages the operations of the Moon Cell recording device. It functions as a self-governing system capable of acting independently from its creators at the Mage's Association.
Where is it located?
The device resides within an artificial moon positioned in lunar orbit above the planet. Its physical location keeps it isolated from surface conflicts while allowing it to monitor global magical activity.
What is its primary function?
Its main purpose is to observe and store every spell cast by humanity, effectively preserving the legacy of Heroic Spirits for future study. It operates as a silent observer that ensures no magical phenomenon goes unrecorded.
Who controls it?
Although originally created under Clock Tower oversight, the Automaton often acts independently due to its advanced self-governing nature. This autonomy allows it to make neutral decisions regarding high-level thaumaturgy without direct orders from mages.
How does it relate to the Holy Grail War?
The system runs simulations of conflicts like the Fifth Holy Grail War to analyze magical data and predict future historical divergences. These digital recreations help the AI maintain accurate records of how Heroic Spirits interact with modern magecraft.
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