Shirou, who returned from the Fairy Kingdom

—I like him.

He is everything; he needs nothing else.

—It is because of him that I can continue to love like this forever.

Before meeting him, Aika Sajou was nothing more than "a god with the functions of a girl".

It wasn't until she experienced love that she became "the divine function that turned her into a girl."

"Hello, Saber."

The girl said with a happy expression.

"I will definitely fulfill your wish."

anyway--

Sajō Aika was finally born.

……

……

Shirou: "...?"

Wait, girl, where the hell did you come from?

He now finally understood how Lady Avalon felt when he forcibly summoned her and was unable to refuse.

Volume 5, Chapter 195: Aika: I... my feminine charm has been defeated!?

When the incident occurred, Shirou was home alone, playing the newly released fighting game with Illya in the living room.

After all, it was a duel that risked the honor of being an older brother, and Shirou had no qualms about beating up his 3-year-old sister and had no intention of holding back.

"Shirou! You're glowing!"

Ilya, as if she had discovered a new continent, suddenly shook his arm excitedly.

"Hmph, Ilya... You think I'll fall for that? You think you can distract me so easily? Take this!"

Shirou was completely focused on the television, knowing Illya's cunning and resourcefulness, and didn't give her any opportunity to take advantage of him.

On the screen, Zangief hugged Cammy, preparing to unleash a move that would make Ilya cry with anger—

"No, Shirou! You're really glowing! Ah, your body has become translucent!"

"what?"

Shirou glanced at his body out of the corner of his eye.

It really is glowing.

Wait, could this be...?

A bad feeling rose in his heart.

"Shirou, what kind of magic is this? Teach Illya too!"

"..."

Shirou turned around and grabbed the girl's shoulders, his eyes wide and his expression solemn.

"What's wrong, Shirou? Your expression is scary."

Ilya blinked, and the red-haired boy took a deep breath and spoke.

"Ilya, listen carefully, I'm leaving."

The silver-haired girl tilted her head and asked curiously, "Are you leaving? Where is Shirou going? Aren't you going to play with Illya?"

"……Well."

Shirou bit his lip bitterly: "If I could, I'd like to stay here and play with Illya..."

But no, I have to go. I must go to protect Ilya.

"Is that so... then there's nothing we can do about it."

The girl nodded as if she understood, then revealed an innocent and carefree smile.

Shirou will be back soon, right? He certainly won't abandon Illya, will he?"

"Of course, I promise you I'll be back soon. By the way, shall we pinky swear?"

"No." The girl turned her face away.

"Hey?"

"Shirou never keeps his word, so don't!"

"Hahaha……"

Shirou scratched his cheek sheepishly, regretting that he should have paid more attention to honesty in the past.

So what~

The silver-haired girl gazed at Shirou with her deep red eyes and spoke with a proud expression.

"If Shirou doesn't want to play games with Illya anymore, he must keep his promise this time."

"........."

Shirou paused for a moment, then revealed a determined expression.

"Ah, it's a deal, Your Highness."

"Hehe, it's good that you understand your mistake. Illya will play with you again after Shirou comes back."

Illya happily reached out and stroked Shirou's hair, and the latter spoke.

"Oh, right, Ilya."

"what?"

Tell Alice, I—

Before he could finish his poignant lines about heading to the battlefield, Shirou's vision abruptly shifted.

A blue vortex of light appeared before his eyes.

……

……

When he came to his senses, Shirou was already standing in the center of the summoning circle.

During the transfer, he was given minimal information by the Holy Grail and realized that he had been summoned to another world as a Servant.

Then, he summoned his Master—

"Hello, Saber."

The platinum-blonde-haired girl gazed into Shirou's eyes and murmured something.

"I will definitely fulfill your wish."

Shirou: "..."

This child is my Master.

Judging from her appearance, she should be no more than thirteen or fourteen years old.

However, Shirou couldn't be sure either; he remembered that Sakura was already quite well-developed when she was thirteen.

No, no, no... It's wrong to judge a woman's age based on her appearance!

Upon closer inspection, what an adorable girl she is...

Shirou thought to himself.

He couldn't help but think of Matou Sakura when he had just entered junior high school.

Back then, Sakura was just as pitiful as her, practically the embodiment of purity and innocence, radiating the aura of waterside flowers and a kind fairy.

Hmm, it seems I'm quite lucky to have met such a good Master.

……

……

Shirou decided to first organize the information he had obtained from the Holy Grail.

Although this world looks no different from Shirou's original world, it is not as different as the Fairy Kingdom.

However, there are some differences in the details.

If we use a river as a metaphor, is the world like tributaries branching off from the main stream? Is that the kind of feeling we're talking about?

"So the world I live in can actually be considered a mainstream world?" Shirou was taken aback.

Then, the differences between this world and the mainstream world—

The point of divergence is the Third Holy Grail War.

More than sixty years ago, on the eve of the Third Reich's invasion of Poland, which ignited the Second World War, the Third Holy Grail War took place in Fuyuki, Japan.

Seven Servants and seven Masters fought each other to achieve their own wishes until the last group was defeated, but an unexpected incident occurred along the way when the Lesser Grail was destroyed.

The Holy Grail War itself ended rather abruptly at that point in time.

The problem arose after that.

The All-Powerful Wish Machine, the Greater Grail, hidden in the cave of Mount Enzo.

Fate took an unexpected turn when a magician, supported by the Third Reich, discovered it and attempted to move it using the power of the army.

Despite the initial three families' valiant efforts to stop this action, they were ultimately defeated due to their extreme weakness after the Holy Grail War.

The Greater Grail, which was built by gathering the power of all three starter families, was thus taken away by outsiders.

That war was not recorded in any documents, left no images, and did not even exist in people's memories; but it was undoubtedly a horrific war between the military and magicians.

So, if an empire leader successfully obtains the Greater Grail, will he be able to rule the world at will?

Such a future, of course, did not come true.

The Greater Grail mysteriously disappeared en route to Germany.

Was it captured by the Japanese army, or was it attacked by the Soviet army?

In any case, the Holy Grail, which had become a symbol of the Third Reich and was supposed to realize the dream of unifying the world, did not fall into anyone's hands and simply "disappeared".

With leadership changes and key figures sent to the battlefield, even the Third Reich, which should have been the victor, had no one knowing the whereabouts of the Greater Grail.

Even humans who knew of the existence of the Greater Grail have disappeared.

The magician who urged the emperor to search for the Holy Grail and called himself "The Thousand World Tree" has disappeared.

The Greater Grail disappeared.

The dreams and obsessions of the three starter families vanished like smoke, and Fuyuki City welcomed the end of the war in peace and stability.

"So, the Greater Grail of Fuyuki was stolen by the magician of the 'Thousand Worlds Tree' and has been hidden until now?"

Several years ago, information that "the Holy Grail War can reach the Root" was leaked for some unknown reason, triggering countless sub-Holy Grail Wars around the world.

Looking back now, this was a smokescreen to cover up the massive seven-on-seven Holy Grail War.

Shirou pinched his chin.

He discovered an even more crucial problem.

So to say--

Is this Fuyuki Holy Grail the untainted version?!

Ahadeon did not cause any trouble.

The Great Grail, completely white.

The true wish-granting machine, by sacrificing seven heroic souls, can even open a path to the Root—

What? It's just a harmless Holy Grail. I can relax now... Yeah, right.