Shinji Matou at Your Service

Shinji nodded repeatedly, shamelessness on full display.

"If you're willing to give it, of course, I won't oppose it! Back in the day, I was quite a famous modding expert in the cheat sections of major forums. Writing modification codes is my specialty. It's just that I didn't keep up with the times later on, otherwise, I could show you a 2-second, 17-shot, 29-kill chicken dinner in person."

Shirou's expression grew increasingly helpless.

"We're all adults. Can you stop daydreaming?"

"Strengthening the body with one hand, strengthening the nation with one mind, a little daydreaming isn't bad."

"Are you done daydreaming?"

"Done."

"Then I'll continue. Don't even think about internal or external cheats; I don't have that capability, and I don't know if the Observer civilization does either. Mooncell is just a 'seed' they planted, used to collect data from various civilizations to aid their own. They don't care what the 'seed' grows into."

As Shirou said, Mooncell evolves based on the observed data it collects. The current Mooncell is very different from when it was first deployed on the moon.

Shinji asked in confusion, "Then why did you say it's hard for me to die?"

"Mooncell is a large-scale spirit particle computation device. The foundation of its fictional world is the same. Entering the fictional world scans the information in your soul and converts it into spirit particles, transforming it into an information body. The collapse of the information body means your death. The power system and world rules built on this foundation are completely different from the outside world. Super strong individuals who can call the wind and rain on Earth might become only slightly stronger than ordinary people inside, making the fictional world indeed dangerous from this perspective."

"But you're an exception because you have Magic. Soul materialization is magic based on manipulating spirit particles with information from the soul. For you, the fictional world is not an obstacle but your home ground. You don't need cheats from me; you carry permissions yourself. Although you'll have to figure out how to use these permissions on your own, one thing is certain: strong emotions or desires will convert into your power. As long as you want to stay alive, your Magic will protect your information body. As long as the information body isn't destroyed, you won't die."

"The reason I chose you over the Old Jewel man is because you're more suited to that world. That old guy has wanted to enter for a long time, but I've never agreed. His second magic doesn't mesh well with the fictional world; the risk of entering is too high. If he falls inside, Earth's hope in the Type-Moon universe would be lost."

"Got it. So this path is indeed quite suitable for me."

At this point, if Shinji still didn't understand, he'd be an idiot.

"But isn't this reward a bit too generous? This is a whole world, a world that can lead to the stars and the sea."

Shinji remembered clearly that one of the endings in Fate/Extra was to head to the unknown stars and sea, truly leaving Earth.

"Of course, it's not for free."

Shirou clasped his hands together, and the azure crystal in his palm vanished.

"The login channel to Mooncell is both an opportunity and a responsibility. You'll be taking my place, working with the Old Jewel man, to avoid the final ending."

"Taking your place?"

"Yes, taking my place. I have more important things to do. Once things here are settled, I have to go back. Who knows when we'll meet again."

"Related to avoiding the final ending?"

Shinji asked curiously.

"Just a bit related, but not much. It's okay to tell you—I, my companions, and allies from various universes are going to war with a civilization that threatens the multiverse. You've heard of 'Velber, Wandering Star of Predation,' right? That's the civilization we're fighting."

"Wandering Star of Predation!!!"

Shinji jumped up from his seat. How could he not know about the Wandering Star of Predation? It's the most mysterious, high-class, and powerful super boss in the entire Type-Moon universe!

How powerful, you ask?

Well, about fourteen thousand years ago, the Wandering Star of Predation arrived in the solar system and deployed three spearheads. These three spearheads crippled the entire solar system in a short time, nearly annihilating the civilizations on the nine planets. The previously mentioned white giant "Sefar," who could crush the original natural gods of Earth, was just a—clone!

Yes, you read that right, just a clone. Sefar's true body is inside Mooncell.

Fourteen thousand years ago, one of the spearheads' landing pods crashed directly onto the moon, invading Mooncell in both physical and electronic senses. It used Mooncell's power to create a destructive clone on Earth and destroyed 80% of Mooncell's data, completely taking away the solar system's potential and hope. Specifically, it used Mooncell's ability to observe parallel worlds and rewrite phenomena to write the event of the Wandering Star of Predation invasion into all parallel worlds.

In all the parallel worlds that followed, the invasion by the Wandering Star of Predation served as the starting point.

On the other hand, the white giant "Sefar" rampaged across Earth, destroying civilizations. The cries of innumerable beings converged, and the planet, crystallizing in the Inner Sea of the Star, forged a holy sword—Excalibur, the planet's last hope.

The original wielder of the holy sword wielded it to severely wound Sefar. This wound affected its true body within Mooncell, creating a brief window of vulnerability in the invasion of Mooncell. Taking advantage of this short window, Mooncell managed to seal and isolate Sefar's true body and the Wandering Star of Predation—Starship within the network, barely preserving itself. This was the limit of what the non-intelligent Mooncell could do.

If even a spearhead is this powerful, what about the main body of the Wandering Star of Predation?

To prevent another invasion by the Wandering Star of Predation, Mooncell emitted interference waves, masking the coordinates of the entire Milky Way, thus securing fourteen thousand years of peace. The birth of the highest authority is also related to the Wandering Star of Predation.

And now, Shirou is saying he's going to wage war against the civilization behind the Wandering Star of Predation?

I thought I had already overestimated him, but I still underestimated him.

"You've become an Outer God, right, like Nyarlathotep from Haiyore! Nyaruko-san?"

"Though the concepts differ, it's not entirely wrong to understand it that way."

"…"

"What, are you scared?"

"Well… yeah…"

Shinji was stunned for a while before coming to his senses, "I fought with an Outer God."

"There's nothing to be so shocked about. The multiverse is vast, and there are many beings stronger than me. If you properly develop Mooncell, you might reach my level, and maybe you can even repay the debt I owe you."

"Uh, let's not talk about whether that's achievable or not. The goal itself seems too distant. I think it's better to set a short-term, small goal first, like—"

"—first taking care of those three Pruning Star spearheads?"

Shirou interjected.

Shinji couldn't help but laugh and cry: "You're killing me here."