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

Martial arts skills, numerical values, fame, and Noble Phantasm.

The four points mentioned above are the main reasons that determine the outcome of a Heroic Spirit's battle.

At this moment, the four heroic spirits clashing here will find it difficult to determine a winner in a short time before using their Noble Phantasms.

"Hahaha, how exhilarating!" Achilles deflected Scáthach's spear tip with his meteor spear. "This is the battle I've been craving, this is the battle of a hero!"

"Queen of the Land of Shadows, don't you think so too?"

Achilles' golden eyes blazed with intense fighting spirit, and his entire body radiated magical energy; he was becoming increasingly excited.

"Hehe, it's still a long way off."

Scáthach's beautiful eyes also held killing intent and fighting spirit. Her slender body could unleash tremendous power. Currently, the two bloody marks on Achilles' body were both caused by her gun skills, which were even more cunning than venomous snakes.

"Not enough! Not enough to kill me!"

The beautiful Queen of the Shadow Kingdom pointed her crimson spear at the swift-footed hero: "Hold on to me until our spear tips pierce each other's throats."

"Hahaha, very good, very good!" Achilles laughed heartily. "It's wonderful to encounter an enemy like you in the Holy Grail War!"

"The destiny of heroes is to fight, and the essence of fighting is slaughter." This is the life that Achilles believed in.

Long ago, his mother Thetis asked him whether he would choose a safe and stable life or a life that was as dazzling as a shooting star but short-lived, and Achilles chose the latter.

He never regretted it until his death; even when he responded to the Holy Grail War, it was to fight and kill heroes from other eras.

“To encounter an enemy like you, responding to this Holy Grail War was absolutely the right decision.” Achilles held his meteor spear horizontally in front of his chest, and both understood each other’s will.

"You who are capable of killing me, and you who long to be killed by me."

"O gods of Olympus, witness the glory and honor of this battle!"

"Let's risk our lives in this battle!"

"Exactly what I want!"

Achilles was met with a red spear that struck like lightning.

Meanwhile, the dragon-slaying hero and the sun god are also locked in battle.

The silver-white sword blade clashed with the golden spear tip. Both were powerful warriors who had entered the realm of gods through martial arts. Their fighting styles were both expansive and flawless. Thus, their battle was as beautiful as a performance, as if they were coordinating to block each other's attacks.

In terms of close combat, even if they fought from sunrise to sunset, they wouldn't be able to determine a winner. The dragon's blood armor and the golden armor are both top-tier defensive treasures.

"A beautiful attack."

Karna couldn't help but praise, "It's my good fortune to fight against an opponent like you, Black Saber."

"Me too, Lancer on the red team."

Even without Gold's ban, Siegfried, though a man of few words, was not incapable of speaking.

"However, I am no longer the Black Saber."

Siegfried made his stance clear. Although the temporary change of Master had indeed made him feel confused, in the end, he didn't have any desire to fulfill. As long as Makoto Aoki's side kept their promise, he was willing to fight for the contract.

"I see. So you've joined the other side too?" Karna was clearly praising them, but his straightforward tone always gave off a sarcastic feeling. "What a formidable outsider. To be able to come out on top in a seven-on-seven Holy Grail War, you must be quite an outstanding person."

"maybe."

All I can do is fight... although fighting me wouldn't be very interesting.

Siegfried's humility was ingrained in his very being.

“No, very excellent, Saber, you are a worthy opponent.” Karna’s praise of his enemy was also ingrained in his bones, and it was probably also because of his humility. “Although I shouldn’t say this, if we weren’t enemies, we should get along quite well.”

After all, they were both noble warriors who had no desire for the Holy Grail and only answered the call to fulfill the wishes of others; they had a lot in common.

"But now we have no choice but to fight, and I'm so sorry for letting you down."

Here it is! Siegfried's classic "I'm sorry—"

Even while they were talking, their movements did not stop for a moment. The flashes of swords and the force of their clashes cut down trees and tore apart the earth, but neither of the warriors had any wounds.

"……That's it."

Once again, Karna blocked Balmonk's blade with the gun barrel. A red light flashed in Karna's blue eyes, and he shot towards Sieg like a laser. Judging from the sudden increase in temperature in the air, it could easily pierce through the enemy's head.

Siegfried was startled and almost reflexively dodged. However, Karna seized the opportunity to dodge hastily and slashed across with his God-Slaying Spear, forcing Siegfried to stagger back several steps and tearing his arm in the process.

The white-haired divine child hovered in the air, with a radiant sun unfolding behind him.

"Brahma, curse me (Brahmastra Kundala)!"

Crimson magic erupted from the "Undying Blade," and Karna hurled the spear with such force that it seemed to destroy everything like a falling sun.

Endless flames followed the falling God-Slaying Spear, illuminating half of the dark sky; Karna himself was like the sun.

The Noble Phantasm of a nation is concentrated and targeted at one person; if hit, even a Heroic Spirit would instantly turn to ashes.

"I have no choice but to use my Noble Phantasm in the same way," Siegfried thought calmly.

"I will bring you down—Fantasy Greatsword: Balmung!"

The sword energy that pierced the sky struck the falling sun, and the residual force of the collision destroyed everything around it.

"Lancer, Rider."

Amakusa Shiro's voice rang in my ears: "Please retreat for now. If this continues, we will be in a disadvantageous situation."

The white-haired priest stood at the edge of the Hanging Gardens, gazing in the direction of Yggdomerrenia Castle.

Just as Makoto Aoki predicted, Amakusa Shirou Tokisada wouldn't allow his two Servants to be trapped by the Black Faction. With the enemy's allegiance currently unclear, Lancer and Rider, who arrived first...

“I understand.” Karna followed the instructions without question. “Let’s save the outcome for next time, Saber.”

In a short time, the burn marks on Siegfried's body had healed, and he nodded slightly in agreement.

Meanwhile, Achilles, whose battle with Scáthach was reaching its climax, received Amakusa's order—

"I reject."

The hero with swift feet said coldly, "This is my battle. If you want to command me, use a Command Spell."