I don't own Fate/Extra, its sequels, or anything under this license.

I don't own the Warhammer license.

This is a FanFiction made by an unpaid amateur.

Order ab Chaos

Maybe on the moon...

Maybe in the future...

It's been around for billions of years... The observation satellites that humanity had placed around the Moon could discern this monumental cube of photonic crystal in one of the craters of the Earth's satellite. Despite its gigantic size (several kilometers apart), it was only the "face" of an entity far beyond human knowledge.

Scientists studying the strange crystal speculated that veins of photonic crystals were running through the basements of the moon and were perhaps one-tenth of the total mass of the satellite.
The photonic crystal entity had been built by an unknown alien people... beings whose knowledge and powers had allowed them to manipulate the very essence of the Moon to transmute it in this way.
Who could these builders be?

Did they still exist?

Did they come from another universe? From the future?

No one knew that...

The Moon Cell Automaton - since that was the name of this photonic crystal supercomputer - remained an enigma for humanity.

The Moon Cell, the Eye of God, the Photonic Abyss, the Seraph, the Angelica Cage, the Holy Grail... Humanity gave many names to the titanic computer, confusing its functions. It's been observing the earth since the time it was just an ocean of magma. It had seen it cool down and the first life forms appear in the primordial ocean... This had watched through the ages until the Earth and Moon fell into the Sun become a black hole...

Again...
Again...
And then again...

Because the Moon Cell traveled through time, it had observed an unknown number of timelines that sometimes varied by a tiny detail. And it had recorded everything, reproducing everything that it had seen in the Serial Phantasm (or Seraph) a succession of Reality Marbles that constituted the existing virtual universe within the Moon Cell.

To summarize the primary function of the Moon Cell, it was an instrument for measuring and recording eternity...

Of course, its creators had endowed it with a computing power beyond anything humanity knew. A Photonic Crystal the size of the nail of the thumb was as powerful as the most powerful supercomputer built by humanity... and the Moon Cell Automaton was billions of times bigger.
This entity had the power to manipulate the very concept of reality.

However, the Moon Cell was usually a passive observer. Devoid of feelings and emotions so as not to interfere with its role as an observer, it was enough to apply its programming without a state of mind.

Once only, it had left this perfect neutrality, revealing its existence to humanity to make it participate in a "game"... The Seraph Grail War... a "contest" bringing together 999 Spiritron Hackers (magi capable of projecting themselves inside the virtual universe of the Seraph), the Masters, clashing through the intermediary of Heroes of the Past, the Servants.

Only one could win the Seraph. The stakes of this war were nothing less than the use of all the power of the Moon Cell to realize the wish of the winner!

If the Moon Cell had been endowed with feelings and emotions, no doubt it would have found the nature of the winner and his wish particularly ironic.

Hakuno Kishinami was not a human from Earth but an I.A. that the computer had created to interact with its guests. Awakening to consciousness, realizing the horror of her situation, she wished that the Moon Cell would never again organize a new Grail War.

The Moon Cell Core was - metaphorically speaking- the center of the Seraph.

It was a strange space extending, it seems, to infinity. The ground was covered with a layer of water. Here and there, one could see monoliths... lying down, erected from various angles. They became more numerous in the "center" of this space. These monuments had something sinister... In fact, each of them recalled the death of a Master, killed by Twice H. Pieceman and his Servant Saver.

Above a stack of these tragic monoliths appeared a strange construction, a cube of Photonic Crystals as unfinished. The missing crystals around a non-existent ridge were replaced by a wireframe that allowed seeing inside a sphere of golden light.

It was the Moon Cell's decision-making unit, his ego...

The interior of this sphere was an ocean of 0 and 1. Time and space were distorted and all the knowledge acquired by the Moon Cell mixed in.

The Moon Cell was threatened... the danger hanging over the supercomputer was nothing immediate. According to its calculations, 30,000 years would still pass before the forces of chaos threaten Earth. The humanity of this epoch, very advanced technologically, would respond to the aggression of demons from the Warp with technologically advanced weapons and psionic powers that the Moon Cell had already observed in many realities.

Nevertheless, despite its computational power, despite its immense capacities, the Moon Cell did not include Chaos.

It must be said that the Moon Cell was a computer, therefore a machine, materializing logic, organization... and therefore the Order.

Chaos was anathema to it.

Its very nature prevented the Moon Cell from understanding Chaos... and thus from opposing it with some chance of success. Is nature also made it the fierce enemy of Chaos and the opposite was just as true. The Warp entities could never leave it alone. If they became aware of its existence, they would seek to destroy it because for them to the computer represented an object incomprehensible and opposed to their nature.

01000111 Directives 1: Self-protection. 01101100

The Moon Cell's first directive was to protect itself against aggression. After all, how could it continue its task if it was destroyed?!

For a human being, preparing thirty millennia in advance for a danger that could hypothetically threaten you might seem a little... exaggerated. Only, no human could ever comprehend the Moon Cell, an entity that think in terms of billions of years and which - traveling between timelines- saw any possibility as an inevitable certainty.

Having performed probability calculations and juggling concepts that would have to drive mad every human being exposed to them, the Moon Cell came to the end of its analysis.

This entity would inevitably collide with Chaos personified... and be destroyed. Its chances of victory were close to zero.

This was obviously unacceptable.

If it did not understand Chaos, it had to act through a being that could understand it and find parades.

Its Enemy-Programs, simple extension of itself was unusable.

The Servants were much more promising. Nevertheless, sending a Servant alone would be ineffective.

It had to send a Master with Servants.

The best of the Masters...

Far from Earth...

The Old World...

A dark, anguishing place, filled with perils, torn apart by war. From the cities of the Empire to the forests of the Wood Elves, to the underground mines of the Dwarfs, there is no place free from the insidious decay that slowly corrupts the earth and vegetation. The howling winds of Chaos mutate men, turning them into abominations. Even in the heart of cities, unspeakable cults invoke the divinities of Chaos: Khorne god of blood, the divinity of battles; Tzeentch god of change, the architect of destiny; Nurgle lord of decay and corruption; Slaanesh, Prince of Chaos, Lord of pleasures and all excesses... and so many others, for Chaos, cannot be ordained enough to limit the number of gods it has begotten!

The last of all wars is about to begin.

There, in the desolations of the North, territories ravaged by an orgy of mutations that have transformed the landscapes themselves, gather the hordes of changing. It is a collection of disgraced monsters whose minds have sunk into madness and whose souls themselves -bearing the mark of Chaos- have been distorted to the point of having nothing human. Witches accompany them and they have opened portals to the Warp... pouring out the infinite plague of demons.

In the East, beyond the mountains of the Dwarf kingdoms, another danger has arisen: orcs and goblins, hideous, cruel and stupid creatures living only by and for war, a veritable green tide that threatens to sweep over the lands of the Empire.

In the West, across the seas, the Dark Elf privateers gathered a huge fleet to try - once again- to invade the archipelago of Ulthuan, home of the High Elves.

To conclude this horrific picture, it would be necessary to add the Skavens - rat-men- the Dwarfs of the Chaos muted cousins of the inhabitants of the mountains, the man-goats who haunt the forests, the vampires who thrive in the south-is of the Empire and the mummified pharaohs of Arabia... so many forces plot to bring down the world of men!

In the sky two moons turn, one of them is surrounded by a green and corrupting aura...

Couronne, capital of Bretonnia...

Splendid and majestic, the city was surrounded by high white walls reinforced by pepper towers. It rose amidst fields perfectly maintained... by peasants in rags.

They formed a striking contrast with the crowd that pressed on the Highway: knights in armor of plates riding on battle steed. Their splendor surpassed words, like metal statues, they wore silk tabards and their coat of arms blazed in bright colors: blue, green, silver, gold, red.

They personified nobility, chivalry, the skill of weapons taught since childhood and transmitted by tradition. Their weapons and armors were the fruit of master craftsmen. Some had spears burning with a golden flame, and some had armor, shields, helmets, or enchanted swords handed down from father to son for generations.

Among the knights were beautiful ladies, dressed in satin cotardies dress and gold embroidered velvet. Wearing hennas, they rode splendid haquenés or unicorns, both legs hanging on the same side. The magic wand they wore left no doubt about their talent as magicians.

At the side of the road, an old man with bleary eyes, with a shaved beard on his face, a bald head surrounded by a crown of grey hair, was walking painfully. He leaned on a heavy wand and several amulets clicked around his neck.

A magician, a magician! Although his grey dress looked more like rags than anything else, the guards at the door did not try to prevent him from entering. These peasants recruited by their lord were only poor illiterate and superstitious people. Some made a sign of conjuration addressed to the Lady of the Lake to protect them from the Evil Eye.

The magician - simply known as the Councilman- did not care. The peasants feared him, the nobles despised him... but the king listened to him.

As he walked up a street lined with half-timbered houses, a flap of wings raised his head. A squadron of Pegasus was passing over him. The winged horses carrying bards and steel headdresses were ridden by knights as magnificent as those who went up the street.

King Louen Leoncoeur gathered the whole crown of his armies for the crusade against Chaos.

As the Councilman entered the courtyard of the castle, he looked with a liking air at the knights present, the guards and the peasant archers on the ramparts. On towers, griffins and pegasus landed.
As for the king, in armor, the crown on his head, he greeted the newcomers of his sword drawn... the Couronne Sword, the gift of the Lady of the Lake to the ancestors of the sovereign. Guided by such a man, Bretonnia still had a chance and the Old World with her...

A crow's croaking surprised the old magician. He stretched out his arm for his familiar to land there. The bird climbed up to his shoulder and leaned over his ear:

- Croâââ... Croâââ...

The Councilman nodded and stiffened:

- What?

He had to speak to the king immediately!

It would have been difficult to imagine a place purer, more beautiful than the Lake of the Lady. The waters were clear. Lit by the radiant spring sun, they literally mirrored, reflecting century-old trees covered with green leaves. In their branches sang birds and played squirrels.

A deer with a mighty antler advanced to the shore to plunge its muzzle into the wave with a graceful and powerful movement. The deer and fawns accompanied him, the harem and the children of the king of this forest. However, the majestic animal raised its head and looked mistrustful. Its instinct warned it that something abnormal was about to happen.

A few steps from the shore a statue of the Lady of the Lake emerged from the water. It was an image cut out of stone depicting a beautiful woman with hieratic features and eyes without pupils. In her hands gathered on her chest, she held a golden chalice... the legendary Grail.
It was there, on the stone pier hosting a white wooden boat that suddenly appeared a magic circle. Strange crystal cubes and violet particles began to swirl, assembling into a translucent human silhouette... In a few seconds, the three-dimensional image acquires substance. An Asian-type teenager with long chocolate-milk hair had just appeared. She was dressed in a kind of brown uniform with a jacket and a pleated skirt worn on a black sweater and also black tights. She had leather shoes on her feet. On her neck, she wore a knotted blue ribbon.

The phenomenon made her appear dissipating; she collapsed on the ground like a puppet that would have seen its wires cut. The teenager remained there without any movement other than her chest which rose regularly.

A few minutes passed without her moving, giving no sign of wanting to return to consciousness.
However, a warhorse had just arrived, he carried King Louen Leoncoeur. The young man, had blue and piercing eyes, in a marked face, his chin covered with a goatee and a mustache. As he set foot on the ground, his gaze landed on the adolescent girl... Knight, as king, he rushed towards her. Taking off his gauntlet, he controlled her pulse and sighed:

- Alive!

He looked for an injury but found no blood. Her days were not to be in danger. It was only at this moment that the strange appearance of the young girl struck him... He had never seen similar clothes or such fabric. As for the face... a few years ago, an ambassador from Yamato had come from this distant kingdom in the east. He had the same eyes twisted. A foreigner? What was she doing here?

A luminous phenomenon made him flinch.

Trained in combat, Louen immediately reached out to his sword... but did not draw it. On the contrary, he put one knee to the ground:

- Milady!

A beautiful woman had suddenly appeared above the statue, floating in the air with an aerial grace. She was dressed in a white silk bliaut, tightened at the waist by a belt adorned with gold. Her hair was free and curly, similar to a river of ripe wheat color they rushed up to her size, held on her forehead by a circle of golden metal. She tilted slightly:

- Your Majesty, I did not expect you to be here. May I ask you if you are at the origin of the powerful spell of invocation that I felt from my castle of Gascoigne?

The woman who floated before King Louen Leoncoeur was Morgianna, better known as the Enchantress Fairy. She was the most powerful magician of Bretonnia, a country known for her spellers. Moreover, she was the Voice of the Lady of the Lake. Even the ruler of the kingdom had to speak to her with respect and honesty. Raising his head, Louen summed up what he knew:

- The Counselor warned me that... something unusual was going to happen here and I hurried. I left my escort at the entrance of the sacred forest. I found this young girl. You arrived while I was examining her.

Morgianna gracefully touched the earth near the monarch, her bare feet trampling the fresh grass. With one hand, she touched the adolescent's forehead. Then she nodded:

- She is only fainted, probably the shock of her invocation... but I feel something strange in her. I don't think she's human.

- A creature of Chaos!

Louen had just drawn the Couronne sword, which immediately surrounded itself with a golden aura. Nevertheless, the Enchantress Fairy gave him a surprisingly hard look for such a pretty woman:

- My friend, leave your weapon in the sheath. This child does not bear the mark of Chaos... quite the contrary. A sovereign should learn to judge with his heart and mind rather than with his arteries!

The king felt himself grounded like a young child and put the sword back in his sheath without daring to answer. Morgianna, leaning over the teenager, lifted up her left hand to see the ring that was there. She whispered a spell and backed away holding her head:

The Moon... a gigantic crystal cube... the seven lunar chimeric seas... the Holy Grail War... A woman commanding a war fleet in the sky... A woodsman carrying a crossbow on his wrist... a little girl in a maze stealing names... a tyrant on a hill covered in impaled corpses... demented general fighting with a halberd... An invisible assassin... A noble knight carrying a blade burning of solar flames... a god holding the weak mortals in his palm... and above all, still the image of the cube...

The Enchantress Fairy focused on this image understanding how important it was... but what she touched was immeasurably larger than anything her mind could comprehend:

A million realities... billions of years of history... the recording of every moment of the life of the smallest animal... too much information... too much stuff... too many contradictions... too many variations of the same history... an Endless sea on which floats an Omniscient crystal cube, Omnipotent: the Moon Cell... the Lunar Grail.

Morgianna screamed with pain.

- Milady!

Louen Leoncoeur caught up with the Enchantress Fairy who had just fainted.

As the king of Bretonnia passed his handkerchief on Morgianna's face, she regained consciousness with a strong migraine... she sat down and shivered before looking at the girl lying next to her.

- What has happened, asked Louen.

- I was careless. This ring is part of a very powerful entity, the Moon Cell... which is... another Grail.

- Another Holy Grail?

Morgianna nodded. King Louen did not really seem surprised by what she had just taught him, rather troubled:
- I noted your hesitation, Your Majesty, when you mentioned the Counselor. What did he really tell you?
- I thought it was ridiculous and I only came here to reassure him... I didn't have much use for a hysterical advisor... he said... that the Great Grail of the Moon sent someone he called the Inheritor of the Moon.

Morgianna looked at the girl and a new vision crossed her mind:

A labyrinth of translucent corridors... the girl... Hakuno Kishinami... running through this maze... the strange monsters that she fights through... the Fairy frowned; she couldn't really discern who was accompanying Kishinami. An archer dressed in red? An empress armed with a flaming sword? A magician with the ears and the tail of a fox?

- Your Majesty, take the child to the castle. Her name is Hakuno Kishinami, my vision has revealed to me that she has conquered heroes and even a god. She bears the titles of Inheritor of the Moon and Victor of the Moon Cell Grail War. Like the greatest knights of old, she drank at the sacred cup. The Grail sent her to save us from Chaos.

Author's note: And here is my new series, I hope you will enjoy it. As for the idea behind all this... I just wanted to get the Knights of the Round Table to fight alongside the Bretonnian of Warhammer. So I thought of a scenario that would be different from the classic "Fuyuki's Grail War turns bad Shirou and Artoria find themselves in another world". I have nothing against Shirou but there is too much Fanfiction where he is the main character, in addition, I have already exploited this scenario in Fate/ Drangoncrown (another of my Fan Fics). And since I'm a member of the Hakuno Kishinami Church...