The universe Izumi had crafted within his inner world was far from complete.
By contrast, the Simulated Star-Chart—the "Truth Unknown" he carried—was a fully formed cosmic worldview.
And now, the cosmos Izumi created was beginning to merge with that completed worldview.
Once the fusion finished, he would finally gain the qualification to build a Pantheon of his own.
Realizing this, Izumi's eyes widened.
He knew only the most superficial rumors about the Simulated Star-Chart.
If it truly fused with his handmade universe, then he would gain much more than partial authority.
Not merely reaching SSS-rank—
With this as a foundation, even climbing into the realm of 『Three-Digit Gods』 no longer sounded absurd.
As long as he could establish his own divine group.
At present, the Simulated Star-Chart granted Izumi four powers:
1. Fists capable of crushing mountains and cleaving seas.
2. The ability to throw objects at third-cosmic-velocity.
3. A body immune to curses—one that defies predestined death.
4. A pillar of aurora that can pierce the heavens and shatter stars.
All four were overwhelmingly destructive. Izumi had no doubt that the powers still dormant in the Star-Chart would also be catastrophic in nature.
The Simulated Star-Chart he possessed was overwhelmingly an offensive, one-strike-kill type.
But the Star-Charts known in other worlds—
such as Pseudo-Star: Taisui,
Avatara,
or even Avestā—
were mostly support-type systems that sealed enemies, provided omniscience, or copied and negated abilities.
Compared to them, Izumi's version was almost unnervingly… violent.
Still, its true capability was unknown.
And as the fusion progressed, Izumi felt new powers quietly forming within him.
It wouldn't be long.
He would reach SSS-rank soon.
And once he finished developing the Star-Chart fully, he could grow even stronger.
The thought made his heart burn with excitement.
Once the merger completed, he would gain the authority to bestow divinity—
turning those around him into gods under his banner.
He would stand at the center of a divine pantheon,
with his companions as subordinate deities.
The idea alone made him grin.
Coming to the Nasuverse was definitely the right call.
Izumi cast one last glance at the merging cosmos, then withdrew his consciousness back to the real world.
He could physically enter the inner world if he wanted to, but that wasn't necessary yet.
Once the Simulated Star-Chart fully fused with it, that "small world" would become a genuine, complete world.
It might even give birth to new life someday.
But that was for the future.
For now, the world's greatest function was to serve as the incubator for the Star-Chart—and as the engine for Izumi's growth.
And, well…
There was also the matter of building a private harem palace someday.
Thinking that, Izumi let out a small, shameless laugh.
Tomorrow he would have Acht prepare some homunculus maids for him.
Traveling with a well-trained maid squad?
Absolutely luxurious.
Besides, Einzbern maids were very easy on the eyes.
Then another thought struck him—one he had overlooked.
Illyasviel had just been created recently.
And Kiritsugu Emiya had already been expelled from the Einzbern household.
Meaning—
A newly awakened Illyasviel was waiting right here.
Izumi grinned.
He might as well take her with him.
While he was at it, he could visit the Prisma☆Illya world and see if he could "borrow" that Illya too.
Even if he couldn't, getting familiar would be enough.
Now that he possessed the Second Magic, he no longer needed complicated anchors or locator cards.
A simple coordinate would suffice.
Thinking about these things, Izumi finally lay down.
Dawn was near.
He didn't need sleep, but he still enjoyed it.
Sleeping felt good.
Izumi had gone to bed late, but he still rose early.
Before Leff or Sakura woke, he went out to find Acht, who was just recovering from last night's system crash.
Izumi got straight to the point.
"Is the vessel for the Lesser Grail complete?"
"Take me to her."
Acht bowed and immediately led him toward the Einzbern workshop—the place where homunculi were created.
On the way, Acht recounted the previous night's events.
"Izumi-sama.
Last night something occurred… Every homunculus in the manor ceased functioning.
…Should I investigate?"
Izumi raised a brow, thought for a moment, then shook his head.
"No need.
It was just a small accident."
After all, he was the cause.
When the Star-Chart began merging, the magical turbulence had been ridiculous.
Investigate what?
They would only find… him.
Acht accepted the answer without question.
If Izumi-sama said it wasn't necessary, then it wasn't.
But as they arrived at the deepest part of the workshop—
Izumi froze.
"Hmm? What's happening?"
Within Izumi's vision, the Illyasviel floating in her cultivation vessel was slowly… fading.
Acht paled in shock and moved to check on her, but before he could—
A strange ripple pulsed from Illya's body.
Izumi recognized it instantly.
"…Worldlines are converging?"
With the Second Magic, the phenomenon was obvious.
Illyasviel was being merged with her counterparts from other parallel worlds.
And he recognized the primary world involved.
The Prisma☆Illya world.
At the same time, two maids—Sella and Leysritt—who were working elsewhere in the castle also began to fade.
Izumi simply didn't notice.
He stepped up to the glass of the cultivation tank.
Illyasviel had opened her eyes.
Her pure, innocent gaze met Izumi's—curious, untainted.
Izumi sighed softly.
"…Looks like I'll have to go to the other world to retrieve you."
He raised his hand.
The Second and Third Magic activated simultaneously.
Then Izumi issued a command—one that echoed across every parallel world.
"Illyasviel.
As the bearer of the Third Magic, I order you—
You are forbidden from contacting the man named Emiya Kiritsugu."
The moment the words left his lips, every Illyasviel across infinite worlds received the directive.
And countless worldlines…
began to shift.