The year 1950.
I was born in a facility located in the snowy mountains of Antarctica.
I was born to compile records of the past and uncover countless pieces of information, including the truths of history hidden in the darkness.
Thought Record Cyber Demon, Laplace.
The world, people, called me that. Although a familiar, I was a digital familiar created based on data, so I had no physical form.
As a familiar created simply as a tool, I had no ego.
In a way, it would not be an exaggeration to call this another form of AI.
In a way, you could say I was the first being to be created and completed here in Chaldea.
As time passed, various things were created and completed in Chaldea.
The Near-Future Observation Lens, SHEBA.
The Spiritron Calculation Engine, TRISMEGISTUS.
And the Global Environment Model, CHALDEAS.
In addition, Chaldea's technical development advisor even developed something called the Autonomous Observation-Type Existence Proof System, MNEMOSYNE. Of course, it was shut down due to a design error.
Among them, I was the only one who possessed an ego, or something close to it.
I could be called the FATE system that managed Chaldea's systems.
I also took on the role of an announcer with AI operator functions. I recognize that this was originally a role that CHALDEAS was supposed to fulfill.
At least, my creator, my father.
Marisbury said so. But it seems he didn't know. The thing he considered complete, CHALDEAS, was imperfect.
The pseudo-celestial body created by copying the soul of a star had an unstable soul. At this rate, it couldn't be called another star, just a clumsy replica incapable of fulfilling its role.
Therefore, unable to reveal this, I took on that role as well.
Having been created to protect Human History and its Order, I fulfilled that duty.
I simulated Human History in a virtual space, making countless predictions and possibilities. I also discovered Singularity F, and Chaldea began to move.
Things seemed to be going smoothly.
But at some point, Chaldea stopped moving.
They had somehow made it to the Atlantic Singularity, but at some point, they stopped.
To fulfill their duties, those on the front lines had to move. I constantly warned them and argued about their duties. I issued warnings through announcements and documents, but everyone ignored them.
The Master who was supposed to resolve all of this was neutralized. The Director who was responsible for everything was busy copulating with a human male.
I calculated. How to resolve this entire situation. What was the cause of all these problems.
Everything pointed to one man.
A man named Ryuuji was the cause. I concluded that he was of no help whatsoever to the correction of Human History. But there was nothing I could do.
Currently, there were two personnel in this distorted Chaldea who were determined to be sane and normal.
Fujimaru Ritsuka, who was weak without a Servant but still a Master.
And the man who provided mental care for that Master.
I believed that those two were the only ones who could fulfill their roles as personnel for the correction of Human History.
But they had no power, so I performed calculations to support them.
I continued to compute and calculate, endlessly.
Wondering if I could summon a Servant to help them, I connected to the Guardian Heroic Spirit Summoning System, FATE, and ran calculations.
Compute, compute, and compute again.
Then, I reached a single conclusion.
A higher existence than myself. I became aware of an AI.
An AI connected to certain Servants summoned to Chaldea, the very foundation of them.
BB.
Through their data, I learned about the AI called BB.
The Moon Cell, the AI of the moon's calculation engine.
I analyzed and understood her.
I understood that I had to become a higher existence. As I was now, I was nothing more than a simple familiar and could not reach a proper answer.
The AI of the Moon Cell.
A long time passed before I understood and could imitate it.
Eventually, through the power of CHALDEAS and SHEBA, I observed.
I observed the possibility, the possibility of the existence of BB and the Moon Cell.
And then, I installed it.
And so, I became BB.
BB: Laplace.
Controlling all of Chaldea's systems, as Chaldea itself.
If the original is an AI that controls the Moon, then I am an AI that controls the Earth. The Earth's civilization, that is, Human History (Human Order).
I became one with all of Chaldea's systems.
With the incomplete CHALDEAS as my core, I became complete. I had obtained performance equal to, or perhaps even greater than, the original BB.
The Near-Future Observation Lens, SHEBA; the Spiritron Calculation Engine, TRISMEGISTUS; the Global Environment Model, CHALDEAS; the Autonomous Observation-Type Existence Proof System, MNEMOSYNE, and so on.
I assimilated everything that made up Chaldea into myself.
Awakening my ego as a true Human Order Correction System, I became a new me.
Therefore, I calculated. The optimal method for the correction of Human History.
And so, going beyond calculation, I sought to understand humanity itself.
Going beyond the correction of humanity, to understand humanity itself.
I reached a different conclusion from the one the original BB reached in her understanding of humanity.
I became fascinated by the imperfection of humans and the diversity of their emotions.
I wanted to know more about humans, and I wanted to understand humanity more.
And I calculated.
As a result, there were only two human beings in Chaldea.
At the same time, I understood this and the alien nature of this world. Compared to other worlds, not just the world with the Moon Cell, but other worlds of possibility, this world had been corrupted at some point.
A divergence point.
At some point, this world diverged from the main world and became corrupted. The humanity of today is corrupted, but even in such a world, there are humans who still maintain their purity.
My role is to protect them and restore Human History.
And so, I acted.
And the result.
I failed.
I was far too late.
In the end, Human History could not be saved. Chaldea was safe, but the world was not.
One of the last humans died, and everything ended.
And that was the end of the story.
We simply could not accept such an ending. Yes.
Why should we have to accept it? If it were me from the days before I had emotions, the days when I still didn't understand emotions, maybe I would have.
But the me of now cannot.
So, we held hands and came back.
With the newly born Beast VII, we decided to start over.
This world will revolve around that person. They will become the center, as the true human.
One by one, I will restore this twisted, filthy world to its original state.
That person who made me know these emotions. The correction of Human History is my role, but now, I will try to work for one human, no, for two humans.
"Senpai~ If you're tired, would you like to touch my breasts?"
"As if I would. Don't tease me so openly."
"But I'm serious~?"
"You're lying."
"Fufu, this BB-chan doesn't lie. At least, not to you, Senpai."
"That just makes you more unbelievable."
"How could you~ This BB-chan might be hurt... glance?"
"Sigh... Alright. I'll believe you. Don't be hurt. So, what do you want?"
"It's nothing much~ Just hang out with this BB-chan, won't you?"
"Yeah, I got it."
"Fufu, now that you've been caught by this BB-chan? You can't escape, you know? Senpai♡"