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However, the research process was much faster than he had imagined, and... much more disappointing than he had imagined.

"I see... The so-called limited edition third spell is not a complete spell at all."

Gu Chuan quickly came to a conclusion. He discovered that what constituted the core of the entire Greater Grail was not the "Third Magic Grail" with complete theoretical knowledge, but rather the beast-like miracle of soul materialization unleashed by Justeza, the Winter Saintess, through her innate instincts.

The entire structure is like a "black box" that cannot be analyzed or replicated, with virtually no future growth potential or malleability.

"It seems that relying solely on secondhand miracles won't work if we want to truly master the Third Law." Gu Chuan shook his head in disappointment. "In the end, we still have to personally go to the Root to have a chance."

Although the biggest goal of this trip was not achieved, through the analysis of the "materialization of soul" structure of the Greater Grail, Gu Chuan made an unexpected and huge breakthrough in another field.

That is, interference with the "Spirit Core"—the core structure of the soul of high-dimensional life forms such as Servants and Gods. He gained a deeper understanding of the layered structure of the soul and the operational mechanism between the Spirit Core and Godhood.

"Sab, stand still, don't move."

After the study was completed, Gu Chuan turned around and gave orders to the loyal knight king.

“Yes, Master.” Although Artoria was puzzled, she immediately obeyed the order.

Gu Chuan walked up to her, extended his right hand, and gently pressed it on her signature golden ahoge (cowlick), beginning to personally examine and modify her spirit core.

"Hmm... As expected, it is a hybrid of human and dragon. Because of wielding the Holy Sword, a divine weapon, it has obtained a spirit origin structure that is almost like that of a god. Strengthening it will be a bit more troublesome than for ordinary Servants."

Gu Chuan analyzed to himself while his hands kept moving. To him, the so-called "a little troublesome" was just a matter of taking a few more seconds.

The next second, an immense torrent of magical power, so vast that Artoria found it unbelievable, accompanied by higher-level laws, poured continuously from Gu Chuan's palm into her spiritual core!

In an instant, her body burst forth with an incomparably dazzling golden light!

As the light faded, Artoria could clearly feel that her body and her power had undergone a tremendous, qualitative leap!

Her physical attributes were forcibly elevated to a terrifying level comparable to a mythical beast, with all her parameters approaching the EX level! Furthermore, the magical power within her body became almost limitless, as if it possessed a perpetual motion machine, allowing her to unleash her Noble Phantasms continuously without restraint!

At this moment, she has far surpassed the level of ordinary three-knight Servants, and is even capable of confronting the avatars of those gods who do not follow the gods in myths and legends head-on!

"This...this is..." Artoria stared at her hands in disbelief. The explosive growth in power she felt shook even her heart, which belonged to a king!

"Don't make a fuss."

Gu Chuan calmly withdrew his hand, as if he had only done a trivial matter.

"The red dragon bloodline within you originally had the potential to evolve into a divine beast; I simply activated it ahead of time."

He paused, then added in a slightly disdainful tone, "And don't get too cocky. Your current divine beast-level physique is still far inferior to that of another acquaintance of mine—that mythical wild boar. You still have a lot of room to grow."

Artoria: "..."

After a brief moment of shock, Artoria suddenly remembered something, and a deep sense of self-reproach and sadness flashed in her emerald green eyes.

Judging from her expression, Gu Chuan had already guessed seven or eight parts of the truth.

"Where is your scabbard?" he asked calmly. "The scabbard that is paired with your holy sword, the legendary utopia that can isolate all harm and heal all wounds—Avalon."

“…I’m so sorry, Mast.” Artoria lowered her head, her voice filled with guilt. “In that final battle, it…was stolen from me by a traitor. I…lost it.”

"Is that so?" Gu Chuan's face showed no surprise.

"Since it's still in this world, it can still be found."

He reached out and gently shook hands with Artoria's small hand, which was clad in armor.

“Let us establish a spiritual connection based on our covenant.”

A sacred, timeless power instantly spread through the vow between the two!

Soon, Gu Chuan opened his golden eyes.

"found it."

He looked towards the distant other side of the earth.

"In a forest in Central Europe, in Germany."

He released his grip, and a fierce, determined light gleamed in his golden eyes.

He would personally retrieve the strongest protective sheath, this crucial mythical weapon that would make its wielder invincible.

124 The Stolen Ideal Land and a New Home

On the other side of the world, deep in the secluded forests of Germany in Central Europe, covered in snow and ice year-round, lies an ancient castle with a history of over a thousand years—Einzbernburg.

In the deepest ceremonial hall of the castle, the current head of the Einzbern family, known as the "Marshal of the Magic Path," Yubstakuhaid von Einzbern (Ahadeon), was gazing with an almost fanatical, expectant look at the exquisite artificial girl made of silver and mercury—Irisviel—at the center of the altar.

"Alice, this time, we will definitely win."

Ahadeon's aged and hoarse voice echoed in the empty hall. To win the Fifth Holy Grail War and to fulfill the Einzbern family's centuries-old tragic wish, he placed all his hopes on this perfect homunculus, the "Minor Grail."

To ensure absolute success, he even used all of his family's connections and resources to find the legendary supreme relic from distant Britain, which was powerful enough to summon the strongest Sab!

He carefully opened the box, made of gold and engraved with protective runes.

A golden scabbard, radiating a sacred light and seemingly capable of warding off all the filth of the world—Avalon—lies quietly within.

“Behold, Ellie,” Ahadeon’s eyes gleamed with the light of victory in his grasp. “With it, we can summon King Arthur of Britain, or his most elite Knights of the Round Table! This time, the Holy Grail will surely belong to us, the Einzberns!”

However, the moment he finished speaking, something unexpected happened!

Under the incredulous gaze of Ahadeon and Irisviel, the golden scabbard that should have been lying quietly in the box vanished without warning in a barely perceptible golden ripple of space!

It was as if it had never existed!

"—What?!" (5) Enterprise X Lu 2

Ahadeon's aged body trembled violently! His cloudy eyes were instantly filled with extreme shock and rage!

"—Intruder! There's an intruder!!"

He let out a hysterical roar! A piercing alarm instantly resounded throughout the entire castle! Countless android familiars and magical traps were activated in an instant!

However, no matter how he investigated or searched, he could not find any trace of an enemy intrusion. The being that stole the relic seemed like a ghost, a god, using methods he could not understand at all, methods that transcended all common magical knowledge, to steal all his hope right under his nose!

In the end, the impotent and furious Ahadeon could only collapse in despair on his throne.

The relic is lost, and all hope is shattered.

In despair and exhaustion, he was forced to choose the last path—to perform a catalystless summoning that relied purely on affinity and luck.

Meanwhile, in Fuyuki City, in the underground cavity of the Greater Grail.

Gu Chuan gazed at the distant direction of Germany, a faint smile playing on his lips. He slowly opened his hand, and with a gentle spatial fluctuation, the most powerful protective sheath—Avalon—that had just been "stolen" from Einzbernburg, appeared perfectly intact in his palm.

"This is……"

As Artoria gazed at the ideal land she had longed for for thousands of years, a land she thought she had lost forever, her emerald green eyes were instantly filled with unbelievable excitement and a torrent of tears.

"The property returns to its original owner."

Gu Chuan gently handed the golden sword sheath to her.

Artoria trembled as she reached out and accepted the sacred relic that held all her glory, ideals, and regrets. The moment her fingertips touched the familiar, warm scabbard, a resonance and sense of belonging from the depths of her soul instantly coursed through her entire body.

After dealing with all of this, Gu Chuan turned his gaze to the little girl with purple hair who had been standing quietly to the side, watching everything silently from beginning to end.

"cherry."

"Yes!" Sakura's small body trembled involuntarily.

However, what she received was not a cold command, but a pleading request that surprised everyone.

“Gu Chuan… Lord,” Sakura mustered all the courage she had in her life and bowed deeply to Gu Chuan, “I… I don’t want to go back to the Tohsaka family. Please… please take me in!”

Having witnessed her parents' cruelty and the hellish atmosphere of the Matou family, this young girl had completely lost all attachment to that so-called "home".

"Oh?" Gu Chuan looked at her. "You want to stay by my side?"

“Yes!” Sakura nodded heavily.

Rin felt a pang of pain in her heart as she looked into her sister's resolute eyes. She instinctively thought that her sister wanted to leave her because she couldn't forgive their parents. A wave of tenderness and a misplaced sense of self-sacrifice washed over her.

"Sakura...it's okay! Even if Mom and Dad don't want you anymore, your older sister will never abandon you! From now on, I'll take care of you!"

However, Gu Chuan's next words stunned both sisters.

"Becoming my disciple is not a good choice."

Gu Chuan smiled and offered an even more unexpected solution, "However, I can recommend a more suitable, true deity of rules as your teacher."

"--Hmm, let's call her Mengmeng."

“I will have her teach you the most authentic ancient magic. It will also give her something to do, so she won’t be so clingy all day long.”

Gu Chuan's arrangement was a double-edged sword. It not only found Ying the safest and strongest home, but also solved Mengmeng's overly clingy problem.

"I...I do!"

A glimmer of hope rekindled in Sakura's eyes. To be able to take a true "god" as her master was something she had never dared to dream of.

"That's great, Sakura!"

After a brief moment of surprise, Rin finally understood Gu Chuan's good intentions. She was genuinely happy that her younger sister had found such a good match. Together with Artoria, she promised Sakura that they would always take care of her like older sisters, no matter what.

After entrusting Sakura to Pandora, who had come upon hearing the news but was unwilling yet dared not disobey orders, Gu Chuan took Artoria and prepared to set off to return to his own world.

Just before leaving, Rin belatedly realized a fatal problem.

She looked at her small body, which was only the size of a seven or eight-year-old child, and then at the now empty underground cavern, and fell into deep thought.

and many more……

Now, how am I supposed to... go home alone? Ugh!

125 New Family and the Oath of the Knight King

After entrusting Sakura to Pandora, who had come upon hearing the news but was unwilling yet dared not disobey orders, Gu Chuan took Artoria and prepared to set off to return to his own world.

Before leaving, Gu Chuan couldn't help but chuckle as he looked at Rin Tohsaka, who was still in a child's body and was worrying about how to get home alone.

With a casual wave of his hand, a gentle spatial force enveloped her, safely teleporting her back to the front of the Tohsaka family mansion.

When Rin finally stood on solid ground again, she was greeted by her mother, Aoi Tohsaka's, face filled with worry and exhaustion.

"Rin! Where did you run off to?!"

“Mom…” Rin looked at her mother, her heart filled with mixed emotions.

"Sigh..." Aoi Tohsaka sighed, squatting down to straighten her daughter's slightly disheveled "613" clothes. Her voice hoarse, she said, "Just now... your father went to the Matou family. He heard Sakura was missing and thinks the Matou family did it, so he's going to demand an explanation..."

"And the result?" Rin asked knowingly.

"...In the end, naturally, we came up empty-handed. Sakura... can never come back to our home." A hint of unconcealed sadness flashed in Aoi Tohsaka's eyes. "Rin, you have to understand, our home... can never be returned to."

Her mother's words were like a heavy hammer, shattering the last glimmer of hope in Rin's heart.

She understood that the rift created by the magician's destiny was irreparable.

She ultimately chose silence, burying all the truth deep within her heart. She simply hugged her mother quietly and whispered, "I understand, Mom. I will... bless Sakura."

……

[System notification: Rin Tohsaka's core wish—"to save her sister Sakura's fate"—has been fulfilled. The time-travel mission is complete, and her consciousness is about to return.]

[System notification: Causality is being reconstructed... World lines are converging...]

A series of cold system notifications sounded. Gu Chuan frowned slightly as he looked at the space before him, which seemed like a shattered mirror, crumbling and then reforming inch by inch. Artoria beside him also gripped her holy sword tightly, on high alert.

This torrent of time and space comes quickly and goes quickly.

When everything returned to calm, Gu Chuan was surprised to find that a graceful girl with long, flowing purple hair, wearing the uniform of Homurahara Academy in Fuyuki City, had quietly appeared beside him.

She looked at Gu Chuan, her beautiful purple eyes filled with the purest, heartfelt admiration and trust.

"dad."

The girl called out softly.

boom--! ! !

The moment the girl spoke, a massive stream of information spanning over a decade, which did not belong to his current memories, surged into his mind like a flood bursting its banks!

Ten years ago, after the Fourth Holy Grail War, he rescued young Sakura from the Matou family's den of iniquity and formally adopted her. Over the past ten years, he and his maid, Momo, have personally taught her, accompanied her, and watched her grow from a timid, pitiful little girl into the gentle, resilient, and powerful magician she is today—a heartwarming ten-year journey…

These memories, forcibly "filled in" by the timeline, were so real and so heartwarming that even Gu Chuan, the "observer" with a calm and collected heart, couldn't help but let out a complex sigh after digesting them all.

"So this is what it feels like to be a father..."