By the time Izumi finished everything inside his miniature world, it was already deep into the night. Thankfully, Le Fay wasn't sharing a bed with him today—otherwise she would have been utterly baffled.
After all, a man who doesn't sleep and is grinning like a pervert would raise questions.
With his business in the small world wrapped up, Izumi still didn't rest. Instead, a new idea had taken shape in his mind—one he couldn't resist experimenting with.
Using his Astrology—that vast, star-borne magecraft—he planned to construct an entire galactic system inside the miniature world, with each celestial body formed from Star-Particle Essence. The particles would then serve as the cores for countless magic circles.
The more he thought about it, the more viable it sounded.
So he acted immediately.
Pouring his spiritual focus fully into the miniature world, his consciousness descended into its sky.
This so-called "small world" possessed no stars, no sun, no moon.
And Izumi intended to build an entire universe within it.
A task that required nothing less than his Astrology.
He looked up into the pitch-black void and silently summoned the Third Stellar Particle within his body.
Then—he began the incantation.
"O god of the void—now witness the defeat of human wisdom."
The moment he spoke, the sky trembled.
Simultaneously, Izumi's aura exploded outward. It wasn't just the Einzbern estate—the entire world sank under its pressure.
Magus across the land paled instantly.
What kind of being could release such monstrous pressure?
Inside the guest room of the Einzbern castle, Le Fay—who had just tucked Sakura into bed—suddenly opened her eyes.
Feeling that familiar yet terrifying aura, she raised an eyebrow.
"Eh? What is Izumi-sama doing?"
She knew this presence better than anyone. Once, she had been bathed in it directly.
To her, it no longer caused fear—only recognition.
Many of the homunculi collapsed into a frozen, error-state, including even Ahad.
With everyone incapacitated, no one interrupted Izumi.
Le Fay wasn't sure what he was attempting, but if Izumi was doing it—then it had to be something important.
So she stayed put and didn't interfere.
Izumi himself had no idea that the disturbance he created wasn't limited to this world.
Even the Outside of the World felt it.
In a throne room beyond humanity, a voluptuous purple-haired woman opened her eyes.
She gazed into the horizon, as if peering across dimensions, and her lips curved upward.
"My, my… what a powerful one."
"Another world, hm? So that world contains someone capable of killing even me."
Her tone brimmed with excitement.
Just as she considered descending into Izumi's world, she suddenly received a transmission—
From Alaya and Gaia.
The message was simple:
"Sit still or you're fired."
"…Tch."
The woman clicked her tongue, clearly annoyed, but didn't argue.
She was already exiled to the Outside; technically she didn't owe Alaya and Gaia obedience.
But being fired—as in removed entirely from the World—would be troublesome.
Exiled beings drifted endlessly in the dimensional void.
Even if one found a new world, hostility followed like a curse.
Even something as simple as drinking water might bring misfortune.
So she backed down.
"Did you really think that would stop me?"
"You underestimate me far too much."
A sly smile spread across her lips.
She had thought of a loophole.
Meanwhile, Izumi had no idea that a certain ancient hag had set her eyes on him.
He simply continued his chant.
"Your gaze is antiquated. Your limbs feeble.
Your knowledge stagnant—
Thus, in the name of the last human,
I cast all decisions, all failures, and all prosperity
back into the void."
Each line of the incantation reverberated through space.
The empty void in his miniature world began birthing stars.
Powered by Astrology, with the Third Stellar Particle as the core, Izumi assembled celestial bodies—one after another.
Raw, tempestuous mana surged across the miniature world.
As the stars lit up the void, the entire world seemed to awaken, growing more vibrant.
If someone had stood within the miniature world, they would have seen the sky swallowed by darkness—
and the countless magic circles hanging above like constellations.
As Izumi constructed the vast star system, he suddenly noticed something alarming.
His mana recovery rate…
couldn't keep up with the consumption.
And Izumi's mana was supposed to be limitless.
Yet he felt an unmistakable emptiness—
only to have it refilled instantly—
only to be drained again.
This cycle repeated endlessly until at last, after the entire galaxy was complete, the emptiness faded.
And along with it, Izumi felt his own attributes rise—barely, but undeniably.
His eyes widened.
This method… works.
Excited, he wasted no time.
He still needed two crucial celestial bodies:
The Sun.
The Moon.
Gathering the Star-Particle Essence, he shaped the luminous sun and the serene moon.
Only once everything was complete did he let out a long sigh.
But then——a new problem hit him.
His universe was built, yes…
But he had nothing to anchor it.
Without stabilization, a world constructed purely of magecraft would inevitably dissolve.
"…Don't tell me all of this was for nothing?"
If the structure collapsed, everything would reset.
Just when despair washed over him—
Something within him stirred.
The Star-Particles reacted.
The newly formed universe began to glow—
And deep within Izumi, his Simulated Celestial Chart (Gensō Sōseizu) began to tremble violently.
Then——
It slowly merged with the universe he had created.
The Simulated Celestial Chart was an authority that amplified one's internal cosmos to affect external phenomena.
And Izumi now possessed a literal universe inside him.
A perfect match.
The Chart was irresistibly drawn toward it.
Not to mention—this universe was constructed using Star-Particle Essence, making it compatible with the Chart on a 100% level.
Izumi had never properly developed or used the Simulated Celestial Chart.
And now—
It was evolving on its own, fusing with the universe he birthed.