Shirou, who returned from the Fairy Kingdom

During his time in Britain, Shirou knew nothing about the pan-human history of his homeland except for stories like the Knights of the Round Table, which he learned about through "drifting objects".

It would take several years to understand the world from scratch.

That's alright, Shirou is only 7 years old this year, he has plenty of time.

The problem is that magic in this world seems to regard "concealment" as the supreme principle.

Even if they wanted to understand, Shirou, an orphan without parents, had no way to do so.

Now, he has obtained a database called Matou Zouken.

The genius magician Machiri will answer all his questions, saving him five hundred years of struggle—how awesome!

"I'm sorry to have kept you waiting, Sakura."

Seeing the red-haired boy's actions, Matou Sakura naturally felt fear, but she immediately remembered that Shirou had just rescued her from the insects.

The girl felt a surge of warmth as she recalled his strong arms around her.

"Brother Shirou, thank you for saving me."

"Well, let's go back."

"Good, good."

Sakura Matou quickly followed, while stealing a glance at the toy rubber duck in Shirou's hand.

"Oh, I'm sorry, it's so rude of me to just hold your grandfather like this. Here, take it."

Shirou threw the little yellow duck over, but Matou Sakura dodged it with a look of disgust, letting "Grandpa" fall to the ground.

"Please don't throw that kind of thing at me, Shirou-nii."

"That...that kind of thing!?"

The girl's extremely cold tone left the boy feeling very frustrated.

After taking Sakura back to her room, Shirou knocked on Matou Tsuruno's door.

Starting tomorrow, he will be the new head of the Matou family.

Volume 1, Chapter 12: The Visitor

The next day, Shinji learned that his grandfather had gone on a trip abroad.

The Matou family was able to briefly restore peace.

For the next period of time, Shirou Amamiya continued to stay at the Matou residence.

With Matou Tsuruno's help, he obtained his identity documents and enrolled in Fuyuki Elementary School, becoming a classmate of the Matou siblings.

During the day, she goes out with the Matou siblings to school to learn about the world.

That night, through the "Magic Terminal - Machiri", I obtained mysterious information about the history of pan-humanity.

Soon after, Shirou Amamiya learned of the secret ritual known as the Fuyuki Holy Grail War—

And the deeper, darker secrets within.

……

……

Holy Grail War.

A secret magic ritual held every sixty years, based on the vast spiritual veins of Fuyuki City.

The participants in the ritual are seven magicians and seven Heroic Spirits (Servants) who appear in the world through a séance.

These seven pairs will compete to determine the final, sole winner.

At the heart of the magic ritual is the Holy Grail, known as the "omnipotent wish-granting machine."

This is the intelligence on the surface.

Then, Shirou Amamiya also obtained deeper top-secret information through the "Magic Terminal Machiri".

That was the truth about the Holy Grail known only to the three founding families of the Holy Grail War: the Einzbern, Matou, and Tohsaka.

The "omnipotent wish-granting machine" is nothing more than a lie spread to conceal the value of the Holy Grail War and reduce the number of powerful opponents.

The three founding families established the Holy Grail War in order to sacrifice all seven Heroic Spirits in order to reach the Vortex of the Root.

The so-called vortex of origin refers to the origin coordinates of all things.

The throne of God, which records all things from the beginning to the end of the world.

The cause gives rise to the effect.

"Cause" contains "effect".

Therefore, once you reach the "cause", you can know and manipulate the "result".

For a magician who thirsts for truth, reaching the source is the only and ultimate aspiration.

The three Fuyuki families concealed the information that "the Holy Grail can open the path to the Root," which is why the Fuyuki Holy Grail War was not taken seriously by the magical world.

“I see, the Vortex of Origin… Morgan and I have talked about similar topics before…”

Shirou suddenly realized why she named my eyes "The Eyes of the End".

"Reaching the origin" and "Reaching the end".

These two seemingly opposite words actually have the same meaning on a magical level.

"But then again, the fairy world clearly doesn't even have a magical civilization, so how would Morgan know such advanced information?"

Even though he would never see her again, Shirou still felt a sense of awe for his savior.

“It’s me, Matou Tsuruno.”

In the evening, Matou Tsuruno went to Shirou's study, where he often stayed recently.

Since that night, he has never treated Shirou as an ordinary 7-year-old child again.

To him, Zouken Matou was a terrifying and absolute symbol of authority.

However, the monster that had ruled the Matou family for centuries was destroyed near his own workshop by a boy who was only 7 years old.

Amamiya Shirou is undoubtedly a monster that has devoured monsters... an even more terrifying monster.

Although he said that Matou Tsuruno would take over the Matou family from now on, a man can't really believe that.

Having previously worked as Zouken Matou's secretary, his current job is essentially the same as before, except for the addition of one more task—

Professor Shinji and Sakura learned the basics of magic.

This was the only task that Shirou Amamiya gave him.

Although it's a bit much for a biological father to say this, does Shinji really have any purpose in learning magic?

I really don't understand his thinking.

It seems that the true head of the Matou family will be chosen from these two.

Shinji was a son with absolutely no talent.

The daughter of the Tohsaka family is a genius who appears only once in a century.

The two are vastly different, however—

Who will become the next head of the Matou family, at least for now, depends entirely on the decision of Shirou Amamiya.

"So, what do you plan to do?"

"what?"

Matou Tsuruno quickly added, "I meant the upcoming Fourth Holy Grail War."

"Oh, right, Matou is one of the three starter families, so we have to deal with that."

The red-haired boy looked at the man: "Zouken is gone, Tsuruno, do you want to participate?"

Matou Tsuruno shook his head abruptly: With his magical talent, he most likely wouldn't even be able to manifest a Command Seal.

"So no one from the Matou family is participating," Shirou said regretfully.

To be honest, he was quite interested in the Holy Grail War.

The Holy Grail, capable of granting any wish, the omnipotent wish-granting machine, the Root Hole... it's all rather uninteresting and boring.

Shirou's main interest stemmed from the existence of the Heroic Spirit.

Matou Tsuruno, trying to decipher the boy's thoughts, whispered, "Couldn't you participate in person...?"

Shirou thought to himself: I don't have any wishes that I want the Holy Grail to grant, so the Holy Grail won't choose me...

"Shirou! Come play! I bought a new card game!"

"Brother Shirou! Where are you?"

The voices of Shinji Matou and Sakura Matou interrupted his thoughts.

Sigh, elementary school students still act like elementary school students. Enjoy your childhood.

Shirou walked toward the brother and sister, just then, a loud "bang!" came from the doorway.

"Dirty Inkstone!!! Get out here!!!"

A young man in sportswear roared in the entrance hall of the Matou family's house.

Shirou shielded Sakura and Shinji behind him, speechless: What's going on this time?

……

The young man who stormed into the mansion was named Matou Kariya.

Although she doesn't have the family's anti-counterfeiting trademark of wakame-colored purple hair, she is a genuine Matou descendant, even though she ran away from home and severed ties ten years ago.

"Huh? You're saying that shady old vampire went on a trip abroad? Do you think you can fool me with a lie like that, Tsuruno!"

"Believe it or not! Can you please stop making a scene at the door? How dare you come back after all this?"

Matou Kariya and Tsuruno, the two brothers, started arguing as soon as they met.

"Sakura!"

Kariya Matou noticed the girl hiding behind Shirou, shoved Tsuruno Matou aside, and rushed over.

"Ugh!"

Matou Kariya's expression was so ferocious and agitated that Shinji let out a strange scream.

"Sakura! Zouken didn't do anything to you, did he?"

The young man knelt on the ground and held the girl's arm tightly.

"Ouch, Uncle Kariya...it hurts so much..."

Sakura Matou showed a somewhat pained expression.

At that moment, a hand gently rested on the young man's shoulder.

　"I understand how you feel. Sakura is fine. Let's calm down first."

As Shirou spoke, he blinked rapidly.

Having witnessed what had just happened, he roughly understood what was going on.

For Matou Kariya, who has now awakened his Frenzy skill, nothing we say will work, so let's use a more aggressive approach—

Shirou exerts suggestive power through his words.

"OK……"

The young man nodded blankly, then followed him to the reception room.

There, Kariya Matou, who had been forced to calm down by magic, listened to an explanation of what had happened.

Sakura Matou was not harmed.

Then, the evil spirit that had been hanging over the Matou family—Zoken Matou—was exorcised.