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

"—A small world surrounding the heavens (axiλλe??k?σmo?)!!"

Unfolding in a green world—mountains, rivers, oceans, even cities—that is where Achilles lived. The so-called small world surrounding the heavens is actually Achilles' world, a world containing all his memories and longings.

Achilles Cosmos, this Noble Phantasm can reconstruct time and space within a certain range, creating a small world for defense; it is Achilles' trump card. It is a divinely crafted weapon forged by Hephaestus, the god of forging. It is a Noble Phantasm effective against individuals, armies, cities, and even nations; it can completely defend against almost any attack.

However, he struggles with the boundary.

However, Tiamat's anti-Genesis symbolizes the rebirth of the world, and in some ways, it can be considered a world-class attack.

Therefore, almost the instant it was touched, the unfolded little world began to shatter. Achilles' world was no match for the world created by Tiamat. Achilles could almost taste the blood rising in his throat.

He channeled all his magical power into the Noble Phantasm in his hand, imbuing it with everything he possessed, through his will and conviction, into this Noble Phantasm that symbolized his life's memories.

Whether it's magic or life, take it all! In short, I won't let you go to Tiamat! This is a man's promise, a hero's promise, and for this, Achilles will never fall until Hachiman Hikigaya succeeds.

On the other hand, Joan of Arc was also under tremendous pressure.

"My Lord is Here" (Luminosite Eternelle) is the manifestation of the legend of wielding the banner on the battlefield and achieving a near-unscathed victory, by revealing the sacred banner and converting EX-level magic resistance into defense against physical attacks.

Furthermore, the flag itself will continuously accumulate damage from the opponent's attacks, so if it is abused, it will become unusable. Faced with Tiamat's anti-genesis, the Holy Flag was almost crying out in despair. The flag surface quickly became tattered and worn, and even the flagpole creaked. It was feared that it would break immediately after a short time.

The Command Seals on her back transformed into wing-like shapes, emitting a crimson light. Joan of Arc used the Command Seals to bless herself and Achilles, allowing them to hold on for a few more seconds.

Hurry up, Hachiman!

Joan of Arc gritted her teeth, pouring a steady stream of magical energy into her Noble Phantasm and Achilles; they wouldn't last much longer!

Hachiman Hikigaya was running. The moment Tiamat appeared, he was running towards her. He didn't care about his surroundings because he knew that Taikomochi would clear the way for him.

The Creation Barrier, which other Servants would avoid at all costs, was easily breached by Hachiman Hikigaya. He stormed in and ran like a madman.

At this moment, he was very grateful for Scáthach's rigorous training; otherwise, given his previous reclusive nature, he probably wouldn't have been able to overcome these rugged roads at all, and would have collapsed after only a few steps.

By this time, he had been sprinting at top speed for quite some time, his eyes still fixed on Tiamat, on that vital spot in her head.

On that deep wound, the core was already faintly visible; it was Red A's previous efforts that allowed him to strike the vital point with a single blow.

"grumble!"

A Barraham leaped from the ground, its ferocious limbs stabbing at Hachiman Hikigaya.

Hachiman Hikigaya didn't even give it a glance.

Taigong Wang made his move, lashing his God-Slaying Whip at Balilahmu. The special attack on divinity caused Balilahmu to scream in agony.

"Leave this to me, let's move on, Hachiman-kun."

He seemed to hear Taiko's blessing, but Hachiman Hikigaya had no mind for these things.

Why work so hard when you clearly don't like this world at all?

but!

Images flashed through my mind: soldiers who died on the Great Wall, nurses providing support on the front lines, and workers who were constantly producing goods in the rear...

Everyone else gave it their all, so what reason did Hachiman Hikigaya have not to fight back?

He is human too!

With unwavering determination, Hachiman Hikigaya leaped into the air, raising his Golden Blade high and thrusting it towards the hideous wound on Tiamat's head.

"Let all technology do its thing! Beast2!!"

While Hachiman Hikigaya was running desperately, Achilles and Jeanne had already sensed the sound of their spirit origins shattering. Jeanne was alright; as a arbiter backed by the Holy Grail, her magic resistance and endurance were inherently stronger than other Servants.

But Achilles truly experienced the taste of death.

This body was as if a huge hole had been torn open, with magic constantly pouring in and leaking out. Achilles was under even greater pressure than Joan of Arc, not to mention that his Noble Phantasm was inherently very ineffective against attacks on the world.

That was the crushing of worlds, Tiamat's anti-Genesis, constantly reshaping Achilles' world, crushing the world he once longed for and lived in.

Therefore, Achilles had no choice but to pour all his magic, all his emotions, and all his longing into his Noble Phantasm to continuously spread it throughout his world in order to resist Tiamat's encroachment.

Blood gushed from his face, turning his vision a bloody mess, but Achilles still did not fall.

"What a joke! How could I fall here! I swore I would definitely stop it!"

Achilles roared, for as a hero, there are things one must do, even at the cost of death!

At this moment, new magic surged from the contract within his body.

"Lord Achilles!" Sonoko Suzuki felt a faint connection to the other end of the contract, and tears welled up in her eyes. She hugged herself and cried uncontrollably.

Sonoko Suzuki has always given the impression of being a fangirl who only likes handsome men.

She falls in love with every guy she meets, yet she always seems to run into jerks.

But Achilles is different. That man is a true hero. When he is by your side, you don't need to worry about anything.

He will definitely keep his promise!

Sonoko Suzuki fiercely wiped away her tears, then unleashed three Command Seals and all her magical power: "Achilles! Live on, you must come back!!"

The power of the Command Seals obeyed the Master's command and began to desperately repair Achilles's riddled body, but this could only sustain it for a short time.

"Master's order... Ha, although I don't like orders, I have to grant this request in the face of your desperate efforts!"

Joan of Arc's banner had even been broken, and only Achilles was still holding it up.

"I will never lose to you, Tiamat!!"

Time had lost its meaning; all that was known was that after Hachiman Hikigaya's dagger pierced Tiamat's skull, the barrier against Genesis began to shatter.

"what!"

Even though his spirit origin had been destroyed to the extreme, Achilles still retained his consciousness.

He used his gun to support himself as he stood up, his broken shield lying on the ground.

"I'm still fighting."

Therefore, it will not fall!