Ever since obtaining the World Heart, Mikoto had first come into contact with the highest tier of mystery. Returning to her own world, she saw the gate leading to that mysterious realm, and over these eight months in the Nasuverse, by interacting with and understanding another form of the arcane, she found the key to opening that mysterious door.

What kind of power this was, even Mikoto couldn't fully grasp yet, but she knew if it had to be summed up in one word, it was—Possibility.

The sky-blue jewel was no mere gem; it was proof of her new strength. By merging her esper abilities with magecraft, blending these two mysteries, she transformed the gem’s material, turning it perfectly into the most suitable conductor for firing her Railgun. Simultaneously, Rin’s magecraft further reinforced its variables, allowing it to unleash its most potent force in an instant.

All the electrical energy erupted in that fleeting moment, like the dawn breaking the darkest night. Of course, all this light was currently focused upon the young girl named Misaka Mikoto, and with her sharp cry, the jewel shot out like a cannonball. The tearing sound of light slicing through the air, a beam condensing all that electrical energy, tore the night sky asunder—this was named the Railgun Modified.

It was a devastating strike, akin to an Anti-Army Noble Phantasm. Where the Railgun passed, the water on the sea surface began to vaporize, followed by an instantaneous impact at light speed, creating a colossal roar.

That sound was like the turbulent air currents born from the clash of two immense powers, or perhaps the hideous scream of a monstrous fiend.

Finally… Boom.

The massive, orange-red beam pierced straight through the island-sized Sea Monster, vanishing beyond the far side of the ocean… straight toward the horizon.

“This…” This unparalleled power shocked everyone nearby. Even Lin Luo felt a touch of surprise. He had long known Mikoto must have grown immensely, but he hadn’t expected her growth to reach this level. Not only had the Railgun’s power multiplied several times over, but even its range limitation had been completely eliminated… the Railgun now knew no bounds.

“I-Is this little girl also a Heroic Spirit?” Waver’s eyes nearly popped out as he pointed at Mikoto. A child of six or seven unleashing an attack with the power of an Anti-Army Noble Phantasm—was this even fair to the rest of humanity?

“Calm down, she isn’t a Heroic Spirit; she is human.” The King of Conquerors mercilessly cracked his scion on the head. Heroic Spirits possessed a mutual sense of recognition; if the person were a Heroic Spirit, they would have sensed it upon first sight.

“Human? How can a human possibly be like this?” Waver felt on the verge of collapse, ignoring the throbbing pain on his head, shouting in agitation.

Not only him, but Irisviel also felt close to breaking. She glanced at Mikoto, then back at Lin Luo… three Servants, one girl capable of launching an attack comparable to an Anti-Army Noble Phantasm, plus the power of the scion himself which was already comparable to a Heroic Spirit—was there even a point in fighting this Holy Grail War?

“Look, that Sea Monster over there.” Just then, a voice pulled everyone’s thoughts back to reality. The Lancer pointed calmly toward the distant sea surface. “Although the attack just pierced it, however…”

Following his gaze, they saw that the massive, meter-wide hole punched through the Sea Monster by Mikoto’s attack was already healing at a visible rate. In less than five seconds, it was completely restored.

“This thing… has incredible regenerative abilities,” the King of Conquerors frowned.

“That is to be expected. The monsters summoned by the Master all possess a degree of regeneration. Now that these countless monstrosities are gathered, since the Master treats it as their final trump card, they would naturally deploy every means possible.” Saber gripped the Holy Sword in her hand, her eyes fixed on the Sea Monster with killing intent. Having already clashed with the creature once, she understood its capabilities deeply.

“Damn it, even that doesn’t take it down!” Mikoto grumbled resentfully. To be hit by a full-power Railgun and have the creature remain completely unharmed was incredibly demoralizing.

“Don’t worry about it.” Lin Luo gently patted her shoulder and smiled. “For a monster with regenerative capabilities, it’s natural for it to recover if you can’t annihilate it in a single strike.”

Saying that, he looked toward the gathered group. “Since everyone is here for this Sea Monster, there’s no need for further pleasantries. For now, let’s temporarily join forces and send this ugly brute to hell. I assume there are no objections?”

Nodding, she solemnly placed her hand over her breastplate. “Understood. I have no objection to fighting alongside you. However, even if this alliance is temporary, we should still take an oath together.”

“You’re being quite rigid even at a time like this,” Lin Luo scratched his head wryly.

“It is the principle of a knight,” the girl stated resolutely.

“I have no objection either,” the King of Conquerors nodded.

“Certainly, me too,” the Lancer declared, gripping his twin spears. “As knights, we cannot tolerate such a monster preying upon the land.”

“Alright, then neither of the Masters has an issue?” Lin Luo turned his gaze to Irisviel and Waver. The former quickly nodded, and the latter hesitated for a few seconds before clearly agreeing. Seeing this, Lin Luo nodded. “Then, let us swear…”

For those in the midst of battle, whether killing an enemy or forming an alliance, decisions were made with the calm judgment unclouded by personal emotion—this much was consistent, the shared spiritual will of those who traverse times of chaos.

Of course, Lin Luo was the exception; whether he swore the oath or not made no difference to him. Doing so was merely a gesture to respect their opinions.

The oath complete, everyone uniformly turned their eyes toward the sea surface. The colossal Sea Monster seemed to have finished gathering its strength and began charging towards them.

“We have already witnessed the creature’s regenerative abilities. If we cannot instantly vaporize it, we cannot eliminate it successfully. Does anyone have any suggestions?”

“No good ideas come to mind. If even an Anti-Army Noble Phantasm can’t kill it instantly, other attacks are likely useless.”

“King of Conquerors, what about your Army of Conquest?” Irisviel inquired.

The King of Conquerors shook his head with a wry smile. “I haven't recovered from last night’s battle with the White Knight King. All I can use right now is my Chariot of the Sun. Moreover… even the Army of Conquest might not be capable of destroying something this large. To force something this immense into a Reality Marble requires an enormous drain on magical energy.”

Saying this, he looked toward the Saber. “What are your thoughts? After all, you fought it once.”

The girl nodded. For her, this was almost a reenactment of the defensive battle fought within her own territory. Back then, with the help of her Master, they had barely managed to repel the Master, but now he was counter-attacking with even greater combat strength. However, this time, not only did she have her Master, but she had also allied with Rider, plus a powerful reinforcement like Lin Luo—the situation was certainly not one to be despaired over.

“Regardless, we must finish this quickly. That monster currently relies on the Master’s magical energy supply to maintain its manifestation in this world. If it starts seeking sustenance on its own and becomes self-sufficient, we won’t be able to cope. We must stop it before then.”

The girl spoke, her gaze firming. “That Master’s Grimoire, the Self-Regulating Summoning Mana Core, the Tome of the Animuspheres—this unconventional Noble Phantasm has now become the Sea Monster’s heart, alongside the Master.”

“I see.”

Hearing her explanation, everyone understood what needed to be done. Since they couldn't destroy the sea beast in an instant, the only option was to drag the Master out from the monstrous pile of flesh.

“If I can strip away that Master’s Noble Phantasm, I can use Crimson Petals of Annulment to instantly destroy the magic circuit. Of course, that Master won’t easily fall for the same trick twice.”

“Can you target the Master’s Noble Phantasm and project a spear from the shore?”

Hearing Lin Luo’s question, the Lancer scoffed slightly. “Something of this magnitude is effortless. Don’t underestimate a spear-wielding Heroic Spirit.”

“Good. Then the plan is set: Saber, Rider, and I will be the vanguard, with Mikoto’s attacks providing rear support. Once we drag the Master out from within, the Lancer will deliver the final blow.”

“No problem, this proposal… wait, you’re the vanguard?” Saber stopped mid-sentence, her eyes widening in disbelief as she stared at Lin Luo. “Are you joking? You’re a Master!”

The girl spoke sternly. Since they had taken the oath, they were comrades fighting together. To this upright knight, it was unthinkable to allow a human like Lin Luo to take such a risk.

Lin Luo, however, merely smiled without explaining, his gaze drifting backward. “Rai, I leave it to you.”

“En.” The young woman nodded lightly. Their hands clasped, and a white tornado erupted from the ground. A blue ribbon fluttered away, incantations were chanted, and then… the Seven Jewels Tree combined!

The magnificent yet imposing Blade of the Verdant Wind was now held firmly in Lin Luo’s grasp.

“Ah!” Upon witnessing this scene, everyone’s eyes widened again. After a few seconds, the King of Conquerors clicked his tongue. “Um, everyone, just pretend you didn’t see that.”

The others exchanged glances and nodded simultaneously. Yes, they would pretend not to have seen it. They finally understood: one should never underestimate anyone traveling with Lin Luo, because they were guaranteed to make you drop your jaw when the time came.

“Then, let the battle commence!” The King of Conquerors waved his hand, casting aside the shock in his heart. “My chariot needs no road. Saber, Lin Luo, how do you plan to deal with the enemy in the river?”

The Knight King chuckled casually. “I am protected by the Lady of the Lake; no amount of water can stop my advance.”

“Oh, what a rare character. I wish even more that I could recruit you.”

In the past, hearing the King of Conquerors’ jests would usually cause Saber’s delicate eyebrows to shoot up in anger, but this time, she merely gave him a stern look. “I will remember your nonsense.”

“Me too. Nothing is an obstacle to me.” Seeing their gazes turn towards him, Lin Luo spoke indifferently, and with that, he rose from the ground, walking in the void.

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