Shirou, who returned from the Fairy Kingdom

……

……

"You want to further amplify the power of the Holy Sword?"

In the distant past, when mythical beasts and elves still lived on the island of Britain.

In the lush garden, a young king with red hair was talking with his queen.

"So that's how it is. This is the holy sword that the Lake Fairies gave you... Tsk, Merlin actually kept it from me... No, it's nothing."

The young woman, who was both a queen and the strongest witch, focused her gaze on the golden sword her husband was displaying.

“Thirteen constraints have been imposed upon me… My husband, is this also your request?”

"No, it was already like this when I got it. Morgan, can you help me break these seals?"

"……Well."

"no?"

"How...how could it not work!"

Morgan blushed.

"Who do you think I am? I am your wife, the Fairy Queen of Britain, and there is nothing in this world I cannot do!"

The boy clapped his hands and exclaimed, "No wonder she's Morgan!"

"Ugh...!"

The Fairy Princess bit her lip.

She accidentally boasted in front of her beloved husband.

However, even the Witch of Limits, who had explored the very limits of magic, could not break the thirteen seals attached to the Holy Sword.

That kind of thing is tantamount to being an enemy of the world itself (the planet).

So how exactly can we further enhance the firepower of the Holy Sword without being corrected by the world?

"..."

The girl noticed that her husband was looking at her with a gaze that was both expectant and adoring.

Ahh... such a cute expression, my heart is melting... no, no, no!

Now is not the time to let your mind wander! Think it over, Morgan!

How do you usually do things?

When firepower is insufficient, how do you compensate for the lack of output...? Right!

"Hmm."

The fairy princess cleared her throat dramatically: "Listen carefully, my husband."

"Oh! Please teach me, Mr. Morgan!"

"Increasing the firepower of the Holy Sword is very simple—if the 'quality' is insufficient, just make up for it with 'quantity.'"

The red-haired king's eyes widened: "You mean...!"

Morgan nodded: "Think about how I usually do it?"

If the power of the Rhongomyniad (the spear that shines at the end of time) is insufficient, a second holy spear is created.

If two holy lances aren't enough, make a third. There's no problem that quantity can't solve.

The Holy Lance is not only the weapon wielded by the King, but also a divine-level magic technique mastered by the Queen.

The difference between the two is that the king has only one holy spear, while the queen can create up to thirteen holy spears at the same time.

"But I don't have magic skills as good as Morgan's, do I?"

"Hehe, my husband, don't you also possess sword-making skills that even I don't have?"

"You mean..."

"That's right—my king, why don't you try projecting the Holy Sword?"

Morgan's idea was simple.

Since one holy sword was not powerful enough, the husband projected a second identical holy sword.

Her idea was good, however—

Wang accepted the advice, but encountered a "small" accident during the actual operation.

And so, the strongest Noble Phantasm, which even they themselves had never imagined, was born.

……

……

"Knowing the mercy of the King of Gods"

It's sad.

"Indra, look at me with new eyes."

"The so-called extinction is this stab... Now, the world will see the sunset."

As the memories of the savior continued to flow into Shirou's mind, Karna had already begun to unleash his Noble Phantasm.

He concentrated the rampaging solar magic that had been building up throughout his body onto the tip of his pitch-black spear, attempting to shatter everything in his path.

but--

Karna wasn't the only one whose magical reactions were constantly improving.

With Shirou's deep breath, Albion's encouragement provided the final burst of magical power for the release of his Noble Phantasm.

"Holy Sword, draw your sword!"

Shirou whispered neither to the formidable enemy before him nor to the holy sword in his hand.

At this moment, the object of the Holy Sword Wielder's command is "the Holy Sword of the Stars that exists in all parallel worlds".

The emerging hazy phantoms kept overlapping, superimposing with reality on the sword blade, and finally forming a magnificent golden pillar of light.

Feeling the weight held in his palm, Shirou roared and called out the true name of the Noble Phantasm.

"Unlimited Excalibur Works" —!!!

He assumed a sword stance and swung it down at the lightning bolts shot from Indra's spear.

A flash of starlight, converged from an infinite number of parallel worlds, transformed into a golden slash and charged forward.

“That is…”

Atalanta stared incredulously at the scene before her.

She stopped fleeing and just stared blankly at the magnificent aurora.

In the world of magic, this is the realm of the gods, known as the multidimensional inversion phenomenon.

It is said that there are people in this world who have achieved this phenomenon solely through swordsmanship.

However, Shirou's situation is different now—

He didn't just swing the holy sword several times in an instant; he truly projected a beam of stars from a parallel world into his hand.

Just as described by the true name of the Noble Phantasm (Unlimited Excalibur Works).

This is the true Infinity Blade, the radiance of countless holy swords spanning the multiverse, now embodied in Shirou.

How exactly is this done?

No one can provide a completely reasonable explanation.

Shirou could not possibly have projected or used all the Star Swords from parallel worlds.

Therefore, there is only one explanation, which, although fantastical, is still somewhat plausible—

In all parallel worlds, the Star Sword acknowledges Shirou Amamiya as its master.

Is this even possible?

Even the Holy Sword Wielder, who once repelled extraterrestrial enemies, wouldn't be able to do such a thing.

But it did happen.

Shirou's flash truly contained boundless holy sword light.

The firepower of "O Sun, Obey Death" had reached the pinnacle of all Noble Phantasms, yet it was still cleaved in two by the infinitely synchronized Holy Sword.

"..."

After the light of the Noble Phantasm duel faded, Karna was still standing, but he had an incurable and fatal wound on his body.

"So that's how it is. This is your true power..."

—The "Red" spearman calmly accepted defeat, his body tilted to the side, and he fell down.

"Did you enjoy yourself, Lancer?" Shirou asked.

"Ah... I'm so satisfied."

There was no regret in the great hero's voice; it was clear that he was truly satisfied.

For someone who accepts everything completely, such an outcome is absolutely incomprehensible.

The "Black" swordsman was a Heroic Spirit superior to himself. He had already given his all, and then suffered defeat. There was nothing to regret.

"I'm sorry, Saber, it's ended up like this, with you having to put up with my personal whims."

Shirou shook his head: "Don't say that, I'm very satisfied too—"

If I hadn't met you, I probably wouldn't be able to recall that Noble Phantasm from just now.

"Yeah."

A faint smile appeared on Karna's usually stern and handsome face.

There is no more joyful moment than this.

He cast aside his destiny and mission in life, and risked everything to fight against the strongest enemy.

If I had to point out any flaw...

"Don't worry, Lancer, consider this my reward to the hero—"

Shirou said, "I will rescue your Master."

"!"

Karna's eyes widened.

"you……"

The only thing the son of the sun god had left in this world was his Master, whom he had never met.

Although he was coerced and controlled by Amakusa Shirou and Assassin, that magician was ultimately Karna's Master.

Karna felt that the only person he had wronged was his Master.

She had originally planned to rescue her Master after defeating Saber, but now that wish has become impossible to fulfill...

However, Shirou discerned the regret in his heart.

"..."

Karna couldn't help but recall the legends he had heard before.

In the past, the enlightened one was invited by the king and was treated with great hospitality.

The banquet continued into the night, and the path home of the enlightened ones was shrouded in darkness.

Wang spent a fortune installing streetlights, but a single strong wind extinguished all the lights he had prepared.

Yet the path to enlightenment is still illuminated by a faint light.

It was a beacon of light left behind by a poor old man of humble status who was too lowly to attend the banquet or prepare a gift.

Countless praises and countless aspirations can indeed make life seem very beautiful.

But a sincere heart that goes unnoticed by anyone can bring happiness to others.