Chapter 54: Aoi Tohsaka's Submission, the Giant Sea Demon Dragon Beast!

If Kirei Kotomine and Tokiomi Tohsaka represented the most intense conflict among the pairs, then Rider and Waver, as well as Caster and his devoted follower Ryuunosuke Uryuu, were the most harmonious duos.

"King, Waver has not failed your expectations."

Waver's voice was youthful, but his tone was as steady as it could be.

Because this was Waver from ten years later.

"Haha~ Waver, it seems that Goldie spared your life."

"Allowing a servant to remain loyal to their king is the ultimate wish of every ruler~"

"This time, even though our chances of winning are slim, we will still challenge him! Are you willing to fight by my side once more?!" Rider slapped Waver's shoulder with gusto.

"Yes! I am willing to serve as your whip!"

Waver's voice was filled with excitement.

For the past ten years, he had never felt this exhilarated.

Now that he had the chance to make up for past regrets, he was determined to let Rider fight to his heart's content!

.....

As for Caster's side.

Upon learning that Ryuunosuke Uryuu had been killed before he could play any significant role, Caster burst into tears.

Ryuunosuke was so devout, so endearing, yet so unfortunate!

Why did such a faithful follower have to suffer such a cruel fate?!

The world—how unfair!

"Hmm? What is this aura?"

Caster sensed someone in the city using magic on a massive scale.

And not just ordinary magic, but... magic from the Age of Gods!

Though the way he was using it was rather peculiar.

With his keen sensitivity to magic, Caster immediately rushed to the person recklessly wielding such power.

"Ara~ You have the aura of a Servant. How interesting."

"Would you be willing to do me a favor?"

Caster rubbed his hands together, his round eyes darting around like a fly rubbing its limbs.

.....

Half an hour later.

In the river of Fuyuki City.

A sea monster with dozens of dragon heads emerged from the depths!

"My Jeanne!"

"This time! I will definitely make you remember your true name!"

Caster, having gained new power.

Officially began his grand plan.

.....

Meanwhile.

[Ding~]

[Detected ongoing attempt to seize fate. Higher-dimensional succubus bloodline activated.]

[Ding!~]

[Host level increased by 7 levels. Current level: 149 (Upper-tier Demon peak).]

Lucien held Illya in his arms, his chest pressed against her back as he played with her white-stockinged feet, feeling their breaths synchronize.

Illya's feet swayed slightly, the texture of the stockings satisfying Lucien immensely.

"Lucien, do you know how heartbroken I was when I realized I could no longer contact you through our contract?"

"Lucien, while you were gone, Illya thought of you every day."

Illya poured out her feelings of longing.

Like Sakura Matou, she had spent ten lonely years after Lucien's departure.

In desperation, she returned to the Einzbern family.

She planned to use the Holy Grail's power to summon Lucien back.

During the Holy Grail War, Illya encountered Sakura Matou, whom she hadn't seen in years, and through Sakura, she met Rin Tohsaka.

Sakura's wish was the same as hers—to find Lucien.

As for Rin, she simply wanted to win and restore the Tohsaka family's honor, with no particular wish in mind.

With their interests aligned, the three successfully formed an alliance.

Working together, they ended the Holy Grail War in just two days.

Caster, Medea, was killed by Berserker while wandering the streets.

Archer's Master was a red-haired high school boy who had no interest in fighting and ultimately chose to have his Servant commit suicide.

Lancer took one of Berserker's lives before being killed by Illya.

Assassin was nothing more than a roadside casualty, easily slain by Saber.

Finally, they faced the previous Holy Grail War's victor—Gilgamesh, the King of Heroes.

Under the cover of Berserker and Rider's charge, Saber managed to sever one of Gilgamesh's arms.

In the end, Illya returned Avalon to Saber, who used her strongest Noble Phantasm to secure victory.

This was the general outline of the altered Fifth Holy Grail War ten years later.

.....

Illya turned around and sat down, hugging Lucien as she gazed into his eyes.

"Lucien, now that we know the Holy Grail has been corrupted, we must save Mom!"

"Tomorrow, we'll go find her and forcibly implant the chess piece into her, severing her connection to the Holy Grail!"

"We don't have to wait until tomorrow. We can go find her soon," Lucien replied.

"Okay!"

Illya smiled happily.

This time, she would stop at nothing!

"By the way, Lucien, there's one more thing."

"What is it?"

"I want the same treatment as Sakura~"

With that, Illya activated her Servant fusion, tightly locking Lucien in place so he couldn't move freely.

In Lucien's arms, Illya's eyes rolled back slightly, her beautiful crimson eyes almost completely turning upward. Inside her white stockings, her cute toes clenched and relaxed repeatedly, almost tearing through the fabric.

Under Lucien's gaze, Illya, having exhausted her mana, began to shrink.

In his arms, she gradually reverted to her ten-year-old self.

"Tsk~"

Lucien sucked in a breath.

Both Illya and Sakura had gained a new skill called "Random Size Change," a terrifying ability that combined physical and psychological attacks.

Fortunately, they were relatively weak compared to Sigurd, a top-tier demon, or else Lucien feared he wouldn't be able to handle it.

As he experienced Illya's random size change, Lucien's thoughts wandered.

[Speaking of which, if Sakura and Illya can randomly change size, can Rin Tohsaka also transform into her older self?]

.....

After an unknown amount of time.

"Roar!!~"

Dragon roars echoed from outside the window.

The sea monster's howls and dragon cries woke Aoi Tohsaka.

Aoi opened her eyes in confusion, only to see Lucien still in the process of replenishing her mana.

At this point, Aoi didn't really mind the mana replenishment.

She quite enjoyed the sensation herself.

What she truly cared about was something else.

"If I remember correctly, before I passed out, I saw an older version of Sakura."

"Lucien, what exactly happened?"

Aoi herself knew little about the magical world. The only reason she had become Tokiomi Tohsaka's wife was her own exceptional magical potential.

"Aoi, have you looked at the memories in your mind?" Lucien pulled away and looked out the window.

He had wanted to play around a bit longer, but now that the giant sea monster had appeared, it was time to complete his mission.

"Memories in my mind?" Aoi rubbed her aching head.

"Tsk!~"

"I... I died? And... I was killed by Kariya?"

"No, not just me! Tokiomi died too!"

The memories of death flooded in, making Aoi extremely uncomfortable.

...

"That's right, Aoi, you died."

"If it weren't for me, you would have met that fate," Lucien explained.

"Huh? Why?"

Aoi was puzzled.

"Did you see me in the memories after that?" Lucien continued.

"No."

"After today, it was as if you vanished into thin air!" Aoi finally realized the key point.

"Exactly, I disappeared."

"If I disappear, this world will become the one you remember."

"But I'm still here."

"You're here because I won. I didn't disappear."

"By the way, you don't know this yet, but I'm neither human nor a Servant. In fact... I'm not even from this world."

"Because I don't belong to this world and tried to alter its laws, I was rejected and expelled by the world."

"Ultimately, I emerged victorious in my struggle against the world, and in the process, you all gained memories of the future timeline."

"So now, that means..." Aoi pursed her lips.

"It means I won. I can continue to interfere with this world, and the world... will change because of me."

"Is that so? That's wonderful."

Aoi looked at Lucien with gentle eyes and slowly leaned in to kiss him.

Having experienced unprecedented pleasure and relaxation with Lucien, she had already developed a high level of affection for him.

Now, knowing his true identity and his ability to change her—and even the world—Aoi felt an unparalleled sense of security.

In nature.

Females only engage in romance and reproduction when they feel safe and have ample resources.

Aoi had entered such a state.

...

A few minutes later.

Aoi gently straightened Lucien's collar and cuffs, her eyes filled with tenderness.

"Lucien, if I'm not mistaken, you need to deal with that monster in the river, right?"

"Correct."

"That monster must be dealt with by me. The others likely lack the firepower to handle it."

This monster was no longer the sea creature from the original story.

It now possessed the power of dragons!

No, it wasn't just that. Lucien also sensed something unusual about it!

Demon King level!

At least Demon King level! Or even... beyond Demon King level!

From a distance, Lucien cast an appraisal spell on the sea monster.

[Name: Giant Sea Demon → Giant Sea Demon Dragon Beast (Genderless)]

[Level: Lv249 (Demon King level peak)]

[Attribute Evaluation]

[Note: Strength within the same level.]

[Strength: B]

[Speed: D]

[Mana: C]

[Physical Defense: A]

[Martial Arts/Spell Proficiency: E (A monster fused with foreign powers, it no longer possesses any martial or magical skill. Without a controller, it can only rely on its primal chaotic instincts.)]

[Divine Artifact/Bloodline Ability: SS (The Giant Sea Demon's inherent power barely reaches the peak of upper-tier demons, and its attributes are unremarkable. However, after fusing with the "Golden Fleece," it gained draconic powers and traits, significantly boosting its strength.

Additionally, due to the disappearance of the world's consciousness, the Prelati's Spellbook even summoned the will of an otherworldly evil god, further enhancing the Sea Demon Dragon Beast's power and regenerative abilities.)]

[Comprehensive Evaluation: Demon King level transcendent (Almost surpassing Demon King level, potentially capable of defeating super Demon Kings, i.e., the Four Great Demon Kings and the Dragon King).]

[Overall Assessment: A truly apocalyptic evil sea demon. The hardest part isn't defeating it, but preventing its regeneration.

Even if you possess the power to destroy it in one strike, unless you eliminate the evil god's will within it, it can regenerate.]

"The Giant Sea Demon has become the Giant Sea Demon Dragon Beast?"

"Sea Dragon Beast?"

"What is this, Digimon?"

After a quick吐槽, Lucien narrowed his eyes.

Peak Demon King level~

Coupled with abnormal regeneration and the hard-to-remove evil god's will.

This was going to be a tough fight.

"Hum~"

White-gold particles condensed around Lucien.

Agumon voluntarily emerged from the contract.

[Lucien... leave this dragon beast to me.]

Raising her claws, Agumon looked at the Sea Demon Dragon Beast, her eyes filled with fighting spirit.

As a being representing "holy" power, she had the duty to eliminate the evil god's will.

"....."

Lucien was about to say something when he suddenly received a call from the DxD world.

[Lucien! Please! If you can hear me, come to my side as soon as possible!]

[Xenovia is driving the holy sword with her life force!]

Irina's message came through.

After receiving Irina's message, Lucien hesitated for a few seconds.

If Xenovia was going all out, they had likely encountered the ten-winged fallen angel, Kokabiel.

Should he deal with the sea monster first? Or go save Irina and Xenovia?

[Asia: Mr. Lucien, could you please come back? We have a big problem here. Rina and the others might not hold out much longer.]

Upon hearing Asia's message, Lucien made up his mind.

What did the civilians threatened by the sea monster matter compared to his childhood friend and his servants?

....

[Asia, you are permitted to use Balance Breaker. It's fine if it gets exposed.]

[I've already purified the data. Agumon can now achieve Ultimate Evolution. We no longer need to hide anything.]

[Until I return, use Balance Breaker to hold off Kokabiel's attacks.]

The reason for this was that Lucien needed to make some preparations.

Defeating a ten-winged fallen angel was a significant event.

Considering the potential fallout, Lucien needed to contact some high-ranking individuals in advance.

For example, Leviathan, the Demon Lord Serafall, the Fallen Angel Governor Azazel, the Holy Maiden Griselda, and even... the descendant of the True Demon Lord Leviathan, Katerea Leviathan, and her Old Satan Faction.

After sending the message to Asia, Lucien immediately teleported back to the DxD world.

At worst, he could resolve Irina's issue as quickly as possible and then return!

If Saber and the others couldn't hold out for a few minutes, they didn't deserve to be called Heroic Spirits!

....

DxD World.

Kuoh Town.

A few minutes earlier.

Xenovia drew the holy sword Durandal, which she had sealed in a separate dimension!

"Here, I release your seal."

"Appear! The Tyrant of Holy Swords—Durandal!"

In addition to being the wielder of Excalibur, she was also the wielder of Durandal!

"Boom!~"

The Tyrant Holy Sword appeared, radiating pure and violent spiritual energy!

Xenovia raised the holy sword and charged at Kokabiel!

....