Justeaze Lizrich von Einzbern (ユスティーツァ・リズライヒ・フォン・アインツベルン, Yusutītsa Rizuraihi fon Aintsuberun?), known as the Holy Maiden of Winter (冬の聖女, Fuyu no Seijo?), is the head of the Einzbern family at the founding of the Fuyuki Holy Grail War.
Justeaze was the head of the Einzbern family two hundred years ago. Well acquainted with Zouken Matou, they had a dream of reaching a utopia that could eliminate and cure all hatred and suffering. Though they wished to exceed the limits of humanity by surpassing the body and reaching the soul, they were particular about reaching that state while still having human form. They were also acquainted with Nagato Tohsaka and Kischur Zelretch Schweinorg, considered a potential inheritor of the Jeweled Sword of Zelretch if not for Zelretch appraising the family as fundamentally evil. Along with the family's then eight hundred year wish of retrieving their lost Third Magic, they sought to use the Holy Grail to reach that miracle. She was born to become the core of the Greater Grail, and she was the one to devise the ritual. Accompanied by Nagato and Zouken, who provided necessary land and starting materials for the ritual, and being watched over by Kischur Zelretch Schweinorg, she allowed herself willingly to be sacrificed by allowing her body crushed via a large and heavy magical pillar and her blood flowed around the ground as the key to reenacting the ancient sorcery.
The Einzberns passed down a portrait of her throughout the ages, and as of the Fourth Holy Grail War, placed a stained window in the ceremony chamber of the Einzbern Castle depicting her with Nagato and Zouken, all reaching their hands to the grail in the sky. It was made to depict the Tohsaka and Matou families waiting on her to show how much they look down on the other families and the humiliation felt in having had to rely on them. Referred to as the "Primeval Justeaze", all subsequent homunculi of the Einzberns were manufactured to the standard of her make and used her as their model. Within their hearts were contained each previous model, a record of their experiences that can be traced back to her. This allowed all those modeled after her to feel her "pain." Illyasviel von Einzbern was developed as one that could be considered her "latest model", born from a "Justeaze-type homunculus" and a foreign magus.
Justeaze has a doll-like face considered to be "too beautiful and too well-crafted", red irises likened to rubies, a "bell-like, beautiful voice", fair skin, and long white hair. All those modeled after her share the same appearance, with Kirei Kotomine considering Irisviel von Einzbern to look exactly like her portrait. Unlike her incarnations, Irisviel and Illyasviel, Justeaze is always depicted with solemn and almost lifeless expression.
In Fate/Apocrypha and Fate/Grand Order she wears the Dress of Heaven.
Through Illya, Justeaze displays a cold and aloof personality, calmly chastising Zouken over how he has lost his way from their original desire of the ascension of humanity to living only for the sake of obtaining immortality.
Justeaze still exists as the core of the Greater Grail as of the Fifth Holy Grail War, but will eventually be destroyed during the events of the war during the Heaven's Feel route or dismantled ten years later in a conflict meant to end the war forever.
When Illyasviel von Einzbern first confronts Zouken during Heaven's Feel, her personality is briefly brought to the forefront when Zouken rants about his reason for wanting immortality. She remarks that he has fallen, reminding him of their shared desire. He laughs at the mimicry and prepares to take Illya for the purpose of obtaining the Einzbern's grail. Illya later accesses her memory and shares it with Shirou Emiya to reproduce the Jewel Sword. It is the memory before she became the core, looking upon her compatriots as she sits in the center of the labyrinth of circuits before the ritual begins.
With the later collapse of the cavern as the last remaining part of Zouken finally begins to die, Illya, planning to sacrifice herself to close the gate to the other side and save Shirou, appears before Zouken and speaks as Justeaze. Zouken does not even see Illya, only seeing his partner who sacrificed herself to create the Grail. She only says "I ask of you, my foe. Why do you not want to die?", reminding Zouken of their dream. He tells her that she is right as he realized what he had truly wished, accepts that all is out of his reach, and passes away.
Justeaze first appears to Amakusa Shirou Tokisada when he enters the Greater Grail in order to perform the Third Magic on humanity. After Shirou is defeated, Sieg and Rider of Black speak to her and ask Justeaze to reverse Shirou's wish. After she tells them that it is impossible to do so because the process of materializing humanity's souls has already begun, Sieg decides to take the Grail to the Reverse Side of the World where there are no humans for it to affect.
During the Fate/Accel Zero Order event, the protagonists go to a singularity that exists as a "What If" event. "What If The Einzberns had mastered their homunculi creation during the Fourth Holy Grail War?" This resulted in Irisviel von Einzbern being a full Master and Justeaze was able to manifest fully from the Greater Grail. However, the Grail was still corrupted and she was blackened, thus being the "boss" of the event.
Justeaze is an archmagus who, as a homunculus, was born as a living Magic Circuit for the sole purpose of becoming the core of the Grail. She is known as the "Master of Northern Alchemy" and "Primeval Justeaze", and Kiritsugu Emiya appraises that none of her descendants can be overcome in the process of making superb homunculi.
Despite being capable of using the Third Magic, Justeaze is unable to use Heaven's Feel in a cost-effective manner. She is responsible for devising the Heaven's Feel system, and still functions in the center of the Greater Grail. Her will is needed for the system to function, else the "Holy Grail is just a Holy Grail" without her. The circuitry covering the cavern in which it is situated is her magic circuits, enlarged and multiplied to reach nearly a size of a kilometer in diameter, acting as a "microcosm of the universe created from a single human body."
Due to the her model being imprinted upon the subsequent Einzbern homunculi, they share her memories, and Illyasviel von Einzbern displays brief traces of her personality that surface around Zouken.
 Fate/stay night [Unlimited Blade Works] Season 2 DVD Booklet Animation Elements p.19-27 [T]
• The origins of Einzbern
A factory originally created by the students of the magician who realized the third magic. Began in the year 1 AD.
They attempted to reproduce their master’s miracle, but couldn’t do it themselves, so as an alternate plan they tried to recreate a specimen identical to their master and have it reproduce the magic.
After nearly 900 years of effort, Justeaze—the homunculus who would come to be called the Winter Saint—was forged.
She was a model that strayed from what the magi had intended, created completely by accident, but her abilities were equal to or above those of their master.
The magi should have been elated about Justeaze, but they couldn’t be happy. After all, she was a mutation that was born regardless of their own techniques or skills.
Even if that specimen was to reproduce the third magic, that conclusion would be harder for them to bear than 900 years of failure.
The magi deperately attempted to create a homunculus that excelled Justeaze by their own techniques.
The artificial intelligence created to act as the castle’s central management—the golem Jubstacheit—was the pinnacle of their craft, and became the father of all homunculi created at Einzbern.
Justeaze succeeded at proving the third magic.
However, it was not cost-effective. Justeaze’s use of the third magic was like careful knitting. It would take several years to save just one person, making the salvation of the entire human race virtually unattainable.
In addition, while Justeaze herself did not age, her body was so frail it would take little to kill her, so she could not leave the castle.
Since her intelligence and mentality were also unaging, she did not develop at all. From an outside perspective, it was as if she was repeating a single day for all eternity.
If she were to leave the castle she would be freed from this “single day,” but the act of leaving the castle signified an easy death for Justeaze.
In the end, they accepted that humans could create something that surpassed humans, but not something that could save humans.
… Or perhaps they would not have failed if a miracle like Justeaze had not occurred.
The magi despaired the limits of their abilities. Some abandoned the castle, while others took their own lives.
The homunculi left at Einzbern were abandoned by their creators, but in their purity, they continued to operate the factory for the sake of the creators’ ideology—the salvation of humankind, the reproduction of a miracle.
From then on, all homunculi created at Einzbern were based off of Justeaze.
Jubstacheit created a humanoid terminal unit, and used it as the manager of Einzbern. Though by the end he operated even Acht (the eighth humanoid terminal), he did not possess a personality.
He only included the necessary “humanity” to operate the castle and reproduce the third magic into each of his humanoid terminals, and made them act like humans.
Jubstacheit is essentially an automaton that cannot progress, but continues operating in perpetuity. His way of existence is just like an old clock ticking away, being forgotten by people before running down.
• The great grail
Five hundred years after the magi departed from Einzbern, a model plan was devised for a wide-area operation device for the third magic using Justeaze.
Einzbern had determined that reproducing Justeaze was impossible.
Their plan of keeping Justeaze safe because she was a unique and valuable model switched to a plan to use that unique model to mass-produce miracles.
(This was not Jubstacheit’s plan, but a consensus of opinion within Einzbern. Because the homunculi were pure, they chose the method with the greatest probability of success. In fact, Jubstacheit was the only intelligence that voted against this.)
Justeaze could only use the third magic on one human over a period of decades. Therefore, using Justeaze as a frame, they would create a “greater” magic formula and save many humans at once.
The plan was to disassemble her magic circuits and replace them with a magic formula, creating a humanoid universe—the great grail.
But Einzbern alone could not start this project.
They were no more than dolls. They had no way to live in the outside world, and they couldn’t handle the complexity of human society.
To create the great grail and reproduce the third magic, they needed understanding and cooperative humans.
Then, in the year 1800, a guest arrived at the winter castle that had continued to produce homunculi.
Makiri Zolken. A magus who had devoted his life to eliminating all the evils of the world, the evils of humanity.
(At this point, Zolken was mostly disillusioned. He knew it was about time to give up, but calling on Einzbern was his last hope. He met Justeaze, and felt a complicated mix of emotions—hope towards fulfilling his ambition, jealousy at her ability to use the third magic, and pity for Justeaze’s eternal youth causing her to “repeat the same day.”)
With Makiri’s understanding and Tōsaka’s cooperation, Einzbern began to create the great grail.
However, once they started, they determined that Justeaze alone was not enough.
They could create a great grail. They could create its core. However, to operate it they would need vast amounts of magical energy, and a lesser grail to control it.
Makiri and Tōsaka devised a ritual to collect magical energy using Justeaze’s ability to connect with the root: the grail war.
Despite being unable to reproduce Justeaze, Einzbern created a lesser grail with similar abilities to hers.
After 10 years, the project was finally complete.
The grail war ritual was successful, and the great grail lit up.
But its first operation ended in dismal failure.
There was no flaw in the great grail itself.
The problem lay in the craftsmen and magi who participated.
Instead of using the precious magic reactor core for the sake of the whole planet, the magi killed each other out of a desire to use it for the sake of their own race or society.
Einzbern had been unable to understand the thought processes of the humans who operated the great grail.
• Irisviel and Illyasviel
Einzbern learned from the failure of the grail war and changed their plans.
Justeaze no longer existed.
While preparing to restart the great grail, they returned to their original goal and focused on creating a perfect homunculus.
As a result, they created Irisviel, a homunculus with the function of a lesser grail. They expanded on her further and Illyasviel, a homunculus that was the pinnacle of Einzbern’s technique, was born.
This is a digression, but separate from the winter castle is the tuners’ building (a small house), inhabited by a family of human magi, not homunculi.
Since the homunculi cannot negotiate with human society, the tuners went into town in their place and barter for needed materials. Traders, essentially.
Still, they are a talented magus family, and possess strong artistry. Humans without strong aesthetic sense could never take care of Einzbern, after all.
The tuner family’s numbers dwindled along with Einzbern’s decline, and in the end only one remained.
It seems he often worked in the castle as a butler, teaching the secluded, medieval-minded homunculi about the outside world.
It’s unknown what kind of conclusion that tuner chose after Illya lost and Jubstacheit shut himself down.
• In summary: so what is Einzbern?
A factory in which homunculi continued operating towards the ideals and goals humans had given them, after the magi had left.
Jubstacheit is something like the factory’s central management program. A monolith. Acht is his terminal.
Even after their creators had given up and died, the homunculi in the winter castle devoted themselves to making their masters’ dream come true.
What lies at the basis of the Einzbern factory and many discarded things is the purity of machines.
Imagine a doll that can speak to its owner, but only a few phrases.
“Hello,” “thank you,” “I’m sorry,” “good night”—“I love you.”
These reactions delight the buyer, but it’s clear that they will soon be disappointed.
“No matter what I say, the doll can only say predetermined phrases. It just keeps repeating that tired old ‘I love you.’ ”
Realizing that the love the doll speaks of is a false emotion, the buyer will likely discard it eventually.
But humans are the ones who see that as empty words and a manufactured fake.
Even if it doesn’t have a “heart,” even if it’s only repeating the same words, there are no lies in the actions of machines.
They innocently carry out the task they were given.
“I love you.”
Though abandoned, forgotten, and scorned as out-of-date dolls, they continue to carry out their mission, unchanged from the time they were designed.
Machines do not lose their worth when a newer model appears.
Their worth (life) ends when humans can no longer bear that purity.
 Fate/side material - Encyclopedia: Justeaze Lizrich von Einzbern [Person's name], p.076 [T]
Justeaze Lizrich von Einzbern [Person's name]
The Einzbern family head who became the foundation of the Great Holy Grail over 200 years ago.
Just like Illya, she was not a proper human, but was instead a magic circuit born for the sole purpose of becoming the Great Holy Grail's core.
In fact, Illya, who was born from the union of a Justeaze-type homunculus and a foreign magus, could be considered her latest model.
As for Justeaze herself, she still exists within the center of the Great Holy Grail. The circuitry covering the surface of the crater in the cavern is actually her magic circuits, enlarged and multiplied.
These magic circuits, almost a kilometer in diameter, are microcosm of the universe created from a single human body.
 TYPE-MOON Fes. Official Pamphlet 10th Anniversary Q & A Booklet:
Q: Why did Zelretch give the design of the Jewel Sword to Tohsaka Nagato, who had the least potential amongst his pupils?
Q: Why did Zelretch give the design of the Jewel Sword to Tohsaka Nagato, who had the least potential amongst his pupils?
A: This student Zelretch took during his journey was mediocre, cold, and bipolar. Even Zelretch exclaimed "Hey, are you crazy or something?" However, Nagato was a good man who is "willing to sacrifice himself for a better future". Although the Einzberns and Makiris were brilliant, they were fundamentally evil. Nagato was mediocre but good at heart.
Zelretch concluded that "this House will probably never accomplish anything great, but at least they will never stray from the righteous path". He then gave the design to Nagato and told him "alright, it will be a struggle, but work towards this goal".
Where there is a will, there is a way. The Tohsaka lineage stubbornly followed the teachings of the great master, and finally, after the gentlemanly Tokiomi, accomplished the impossible.
 Fate/complete material III: World Material - Record of Heavens Feel - Holy Grail War: History of the Holy Grail War, p.007
1790s - The Holy Grail War preparation
In the 1790s, the Einzbern and Matou landed in Japan to fulfill their plan. Then, they proceeded with the preparations of the First Holy Grail war over the course of 10 years.
1800s - The First Holy Grail War
The first Holy Grail War. The rules were not laid out properly, and the Masters' sense of being “participants” was weak. Because there were no Command Spells as in the present, the Servants did not comply with orders, and so the rest of the ritual failed. The Descent of the Holy Grail was at Ryūdō temple.
1860s - The Second Holy Grail War
In light of the failure of the First, the ritual was held only after detailed rules were developed. The so-called "Command Spell System” was perfected/completed, so that it became possible for the Master to enslave the Servant, though the War was a failure. The Descent of the Holy Grail was at the Tōsaka Residence.
1930s - The Third Holy Grail War
Held on the eve of WWII. There were battles over the Lesser Grail with the Imperial Army and the Nazis as well, and the fighting unfolded in the Imperial Capital, but the Lesser Grail was destroyed and the ritual failed. The evocation site of the Grail was at Fuyuki Church. Angra Mainyu was taken in and the Greater Grail was contaminated.
1990s - The Fourth Holy Grail War
2000s - The Fifth Holy Grail War
Events told in "Fate / stay night", the latest and final battle.
2010s - The taking apart of the Holy Grail War.
Ten years after the Fifth War. Lord Emelloi II (real name, Waver Velvet. One of the Masters of the Fourth War) arrived in Fuyuki and together with the head of the Tohsaka line, set out to completely take apart the Great Grail. The Association was planning on bring back the Greater Grail, so the two sides were completely opposed. After the end of the great turmoil of the same magnitude as the Grail War, the Greater Grail was completely dismantled. The Grail Wars of Fuyuki came to a complete conclusion here.
１７９０年頃 - 聖杯戦争の準備
１８００年頃 - 第一次聖杯戦争
最初の聖杯戦争. ルールはロクに規定されておらず, マスターたちの"参加者"としての意識は希薄, 現在のような令呪がないためサーヴァントは命令に従わないなど儀式の休をなさず矢敗した. 聖杯降臨地は柳洞寺
１８６０年頃 - 第ニ次聖杯戦争
第一次の失敗を踏まえ, 細部のルールを整備して執り行われた回. "令呪というシスタム"が完成し, マスターがサーヴァントを思い通りに使役することが可能になったが, 儀式は朱敗に終わる.聖杯降臨地は遠坂邸
１９３０年頃 - 第三次聖杯戦争
第二次世界大戦前夜に執り行われた回。 小聖杯を巡り帝国陸軍やナチスを交え、帝都を舞台に戦いが繰り広げられたが、小聖杯が破壊され 失敗。聖杯降臨地は冬木協会。 アンリマユを取り込み、大聖杯が汚染された。
１９９０年頃 - 第四次聖杯戦争
２０００年頃 - 第五次聖杯戦争
『Fate/stay night』で語られた、最新にレて最後の戦い。これまでの聖杯戦争の締めくくりと呼ぶに相応しい激戦が繰り広げられた。で語られた、最新にレて最後の戦い。これまでの聖杯戦争の締めくくりと呼ぶに相応しい激戦が繰り広げられた。監督者の任にあつ言峰 綺礼が、本来の参加者であるバゼットを殺害してランサーのマスタ一になり代わるなど、不測の事態が数多く発生した回でもある。
２０１０年頃 - 聖杯戦争の解体
 Fate/Zero Season 1 Boxset - Drama CD 1