My youth story, a crossover anime, turns out, is FGO!

The ever-shining sun radiated light and heat across the sky, and the power of the Son of the Sun was unparalleled. Even Siegfried, the hero who slew the dragon, was now at a disadvantage.

Even with the protection of the Dragon Blood Armor, Siegfried still had many burn marks on his body, but his resolute face showed no sign of wavering. For him, no matter who the opponent was, there was only fighting.

"An admirable will." Karna couldn't help but admit that the flames of the sun, along with his spear, burned everything around him to ashes, the dazzling firelight even turning the night sky into daylight.

"I have received your fighting spirit and your determination to win."

Karna looked directly into Siegfried's eyes. In the man's eyes, he seemed to see himself. For such an opponent, he had to offer the highest respect.

"I can sense the spirit of the guardian from your sword!"

"It seems that this alone is not enough to defeat you." Karna raised his right hand, crimson magical flames dyeing his entire body red. "Therefore, to defeat you!"

"I need a strike that is absolutely destructive!"

The raging magic swept across everything around it, even creating a cloud-like explosion, and the brilliance of the sun's flames shone in the night sky, turning the darkness into daylight.

At this moment, only this great sun shines brightly in the sky!

“Suriye, please understand. There is no more condemnation on the battlefield. My father, please forgive me. Unprecedented and unparalleled—”

Can he win? Siegfried had no confidence, but no matter what enemy he faced, even a devastating dragon like Fafnir, all he could do was draw his sword.

The sword hilt was slightly off-center, and the true ether stored in the gem on the hilt unleashed its true power, sending blue-green sword energy soaring into the sky.

"The evil dragon will eventually fall, severing all light and shadow. The world is now at sunset, ready to bring you down—"

"Sun Wheel, submit to death (Vasavi Shakti)!!"

"Fantasy Greatsword: Balmung - Fallen Demon!!"

The sun, shining brightly in the mid-sky, seemed to have exhausted all its strength before finally extinguishing itself and falling to the ground.

The white-haired divine child had lost his golden armor and looked tired.

He won.

With this devastating blow, he finally defeated Saber of the Black Faction. The rare surge of emotion within him prevented him from calming down. He picked up the God-Slaying Spear and prepared to head to another battlefield.

Unable to fulfill his Master's wish, Karna's only value on this battlefield was fighting; beyond that, he didn't know what else he could do.

After all, Karna always underestimates himself.

A faint light seemed to appear in the sky; it was not dawn, but the twilight that divided the world. White feathers drifted in the air, and Karna's blue-violet eyes stared intently at it all.

"You've come, old man."

The Grim Reaper, emerging from the abyss, planted his decaying greatsword before him, his ghostly flames emanating from beneath his skull mask as he gazed upon Karna.

"Son of the Sun, the sun has set; it is no longer your time to shine."

"Your destiny is at this moment."

A voice, seemingly emanating from the abyss, rang in Karna's ears.

"So that's how it is... Is this also... cause and effect?"

Without resentment or regret, Karna once again picked up his spear.

"As a soldier, I will fight to the last moment."

This is the only thing Karna can do.

Faced with such a formidable opponent, the Old Man of the Mountain had no doubts. He walked slowly forward, accompanied by blue, ghostly flames.

"The evening bell has already tolled on your name, the feather heralding death—"

"Azrael!"

The melodious chimes resounded throughout the heavens and earth.

"Did they escape?" Semiramis's departure from the Hanging Gardens was tantamount to handing over the fortress to Gilgamesh. His crimson serpentine eyes gazed into the distance and saw everything that was happening.

"The rest is their business."

The king of Uruk waved his hand listlessly and turned to face the androids who had not yet come to their senses.

"Rejoice! You've survived!"

After a moment of stunned silence, the androids finally realized what was happening and began to cheer, some even weeping with joy, looking at Gilgamesh with reverence and faith.

This is their king!

On the other side, Sherlock Holmes slowly unravels this sixty-year-long plan.

In the Third Holy Grail War, Amakusa Shirou Tokisada was a Ruler summoned through cheating by the Einzbern family. After the Einzbern Master fell in the Holy Grail War, Amakusa managed to come into contact with the Greater Grail before it was taken away, thus becoming a flesh-eating Servant. The overseer of the Holy Church, Kotomine Risei, secretly brought this Servant into the Church. Amakusa Shirou, as Kotomine Risei's adopted son, entered the Eighth Secret Society. Using his position, Shirou Kotomine collected relics in the Middle East, preparing for the Greater Grail's return for sixty years.

"...However, all these sixty years of preparation were for the purpose of realizing your wish—to save all mankind."

Holmes slowly revealed the truth, and Amakusa's strong will and sixty years of continuous efforts shocked everyone.

Eriri and Miku couldn't help but burst into tears, and even Hachiman Hikigaya and Kaguya Shinomiya had sighs on their faces. Tetsu Aoki also had a sorrowful look in his eyes, and even Makoto Aoki, who already knew the truth, sighed deeply.

“Even if the Church doesn’t acknowledge it, you are a true saint,” Makoto Aoki couldn’t help but say. “Even if I don’t agree with your way of saving humanity, it’s still the same.”

The intention is good, but the method is just so-so. Immortality for all mankind plus the removal of all emotions is outrageous. It's not even as good as the human intelligence integration of the True Kingdom or the human evolution plan of Kilshtal.

Makoto Aoki didn't let Holmes reveal Amakusa's method of saving humanity in order to prevent ambitious people in the everyday world from setting their sights on the Greater Grail. However, out of a certain respect, he believed that Amakusa's grand ambition should be known.

"I see. But I have no regrets." Even in this moment of defeat, the determination in Amakusa Shiro Tokisada's eyes did not diminish in the slightest.

"You are about to die." A black throne appeared behind her, and Semiramis sat down, letting Amakusa Shiro Tokisada lie on her lap.

Even at the very end, the beautiful and proud empress maintained her composure and dignity.

“Indeed.” At this moment, Amakusa Shiro Tokisada no longer pursued his endless dream, but simply looked at the woman in front of him.

"I'm sorry," he said softly.

"Because you failed? Or did you lie to me from the beginning, saying you could make me empress?"

Semiramis smiled faintly, her eyes showing weariness, yet also a deep-seated tenderness.

"I forgive you. After all, I'm too tired to get angry."

"Thank you, Semiramis. It's so good to have met you." Amakusa Shiro Tokisada managed a smile with all his might.

"What an idiot."

“My emotions, my body, my love.” Semiramis gently brushed aside the stray hairs on Amakusa Shiro Tokisada’s forehead, her eyes and expression incredibly tender. “But the only one who thirsts for my power, fights alongside me, and will not turn back no matter how I call out to him, is you.”

"Shiro."

As for Makoto Aoki, he watched the two part ways quietly, his silence being the greatest respect he could show.

As the golden spiritual particles dissipated in the air, Scáthach brandished her red spear, leaving behind the words, "I'm going to take care of the last one," before turning and leaving. If nothing unexpected happened, she was going to cause trouble for Atalanta.

Makoto Aoki then turned to look at his companions.

Eriri, Nakano Miku, Shinomiya Kaguya, Hikigaya Hachiman, Aoki Tetsu.

The black-haired boy smiled: "It's finally over, everyone."

"We can go home now!"

Back to the everyday world!