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

"...I see, were you ambushed?" Amakusa Shiro Tokisada learned from Karna that Ruler had not been killed, but he did not show any regret. "There was nothing we could do about it." He calmly accepted the fact.

"Lancer." The white-haired priest had a gentle demeanor, and his amber eyes held no trace of aggression. "Could you tell me about the opponent's Servant? Since we've fought, you should have gained something, right?"

Amakusa Shiro Tokisada was slightly concerned. Able to fight Karna, the son of the sun god Surya, to a draw, he was no ordinary opponent. If nothing unexpected happened, Lancer of Yggdrasilia should be Vlad III, the hero of this land. So, was it Saber or Archer who fought Karna?

Only those at the third rank or higher can fight this divine child.

“It’s Assassin,” Karna replied calmly.

"Assassin? Are you sure you're not joking?" The one who spoke was not the white-haired priest, but the female servant who suddenly appeared.

The elaborate black dress hugged her graceful figure, and her alluring and stunning face held an air of nonchalance. She arrogantly raised her head, looking down at the crowd with her long, narrow, and dazzling golden eyes.

Semiramis, the Assyrian queen and the world's oldest poisoner, was a seductive and venomous woman.

At this moment, the stunning beauty frowned slightly: "You didn't use any Noble Phantasms, did you? How could you be an Assassin, able to fight you to a draw in close combat like this?"

Even though Semiramis herself is an Assassin, she still finds it unbelievable because Assassins are not melee specialists; assassination and poisoning are the true nature of these Servants.

Moreover, Semiramis is a rare dual summon, which means that it occupies half of the Caster class, so the Red side's Caster can only summon weak modern Servants like Shakespeare.

Even so, Semiramis, without using the Hanging Gardens, believed that he was no match for Karna in close combat, and even using his Noble Phantasm "The Sake of the Arrogant King" and summoning Tiamat's eleventh son, Bashium, he had no confidence.

After all, Karna is one of the top warriors.

“I can confirm it.” Any other Heroic Spirit would be uncomfortable being questioned like this by Semiramis, but Karna didn’t care. He simply stated the facts, “Such a powerful enemy would not lie. He calls himself Hassan of Hassans, the Old Man of the Mountain.”

"The Old Man of the Mountain?" Upon hearing that the other party was Hassan, even Amakusa was somewhat doubtful. After all, due to the popularization of the subspecies Holy Grail War, the information of the eighteen Hassans had been made public, so the Black Faction would not summon Hassan again if they had any brains. Moreover, Hassan did not have the ability to confront Karna head-on.

But what the old man of the mountain said...

“I have heard a rumor.” Amakusa Shiro Tokisada has been preparing for this Holy Grail War for sixty years. Even though the chances of Hassan being summoned are very low, he has studied it in detail. “Legend has it that in addition to the 18 Hassans throughout history, there is also the original Hassan. He was born after the Assassin Order was established as Assassins, and was given the name ‘Old Man of the Mountain’ instead of his title. He was the original Hassan-Sabah.”

"However, no one knows the true identity of this person, nor can any evidence be found to prove his actual existence. Legend has it that he will appear before Hassan when he deviates from the right path and cut off his head."

"That is—Hassan who killed Hassan."

"I never expected that the first Hassan would be summoned. How did they manage to do that?" After all, the people of Tiancao had given up on summoning Hassan and instead carefully collected relics to summon the Assyrian empress.

Semiramis's eyes flashed with hostility.

"Heh, I'm just concerned about the Black side's methods." Amakusa keenly sensed Semiramis's dissatisfaction. After all, she was a woman, and even an empress would never accept being compared to someone. "My ally has always been you, Assassin."

"Hmph." Semiramis made an ambiguous sound through his nose.

"You've worked hard, Lancer." Amakusa didn't ignore Karna. "Even if we didn't kill Ruler, it's a pleasant surprise to learn the Black Faction Assassin's real name. Now let's wait for the battle to come."

Karna nodded noncommittally: "Understood, I will follow Master's orders." With that, he transformed into his spirit form.

"How arrogant!" the black-haired empress commented haughtily.

“After all, we are just collaborators, not his Masters.” Amakusa’s smile faltered, but his eyes darkened. “It seems we need to invite the Masters of the Red Team as soon as possible.”

"?" Amakusa suddenly looked up and saw into the distance through the wooden door of the church.

"What's wrong, Master?" Semiramis was ready to use magic at any moment.

“Don’t be nervous, Assassin.” The white-haired priest slowly descended from the altar in the church. “It’s time to welcome our last companion.”

"Saber, how slow..." All the classes of the Red Team have now assembled, leaving only Saber, who is hailed as the most capable in all aspects. Semiramis smiled alluringly, then transformed into a spirit to hide herself.

The heavy wooden door was pushed open carelessly, and bright sunlight shone through the crack. Yes, the sun had risen, and it was a brand new day.

Lion's Robbery strode in. Although he had already lost his eligibility, the Command Seal on his hand did not disappear, instead adding a touch of authenticity to this impersonation.

The white-haired priest stood with his back to him, seemingly in prayer. Sunlight streamed through the stained glass windows of the chapel, bathing him in a serene and holy light, filled with religious solemnity.

"This is the place we agreed upon." Shiki-kai Kairi stood casually, his rugged appearance clashing with the church's atmosphere. "So, you're the one who summoned me?"

The white-haired priest turned around, revealing an unusually young face, though his dark skin and delicate features made it difficult to discern his exact age.

He was wearing a black priest's robe with a cross necklace hanging from his chest.

Shiki Jie Li was slightly surprised. Was this the supervisor sent by the Holy Church? Apart from his mature demeanor, he didn't look much older than Aoki Makoto and the others.

"Nice to meet you. I am Shiro Kotomine, who will be the supervisor for this event."

The priest, who called himself Kotomine Shiro, had gentle features and was very approachable.

If it were an innocent girl like Eriri or Miku, she would probably have thought he was a good person at first glance. After all, this priest's temperament was too clear and gentle, and he looked like a devout believer.

However, Shizi Jieli was even more wary: "I am Shizi Jieli, so I'll skip the self-introduction."

"Yes, I know." Kotomine Shiro's performance proved that he had already received the news from the Clock Tower. It has to be said that Aoki Makoto's decision to let Shishikage Kairi take on the commission was a stroke of genius. Otherwise, even if Arthur came alone, he might not have been able to dispel the doubts of this Father Kotomine.

"Shishi-kun is almost a day later than the red team members. Is something keeping you from getting here?" Kotomine Shiro's nickname was not offensive at all.

"I don't think I need to report to you." Shishi Jie Li's behavior was very much in line with that of a battle-hardened and wary magician.

"Excuse me," Sensing Semiramis's displeasure, Kotomine Shirou didn't press the matter and changed the subject, "May I ask who your Servant is?"

"Do I really have to say it?" Lion's Tribulation Realm was not planning to cooperate too much.

“If there are any concerns, then we’ll go first.” As soon as Kotomine Shiro finished speaking, Semiramis appeared.

The alluring empress stared at Shizi Jie Li with her divine golden eyes, making no attempt to hide her displeasure: "The red team's Assassin, whose real name is Semiramis, please take care of me. Who was that again?"

At the same time, the knight of the Azure Silver appeared, tall and upright, with a noble temperament, guarding the Lion's Destruction Realm.

“Servant Saber, please show my Master basic respect.” The knight’s voice was clear and melodious.

The two followers faced off in silence.

The eyes behind the sunglasses of the Lion King Jie Li were somewhat unfocused; you wouldn't guess it. His acting skills are quite good, King Arthur.