Fuyuki City, 2006

Ten years after the great fire that claimed many lives.

There's a disaster occurring during this year.

A series of gas leaks causing numerous deaths.

Mysterious gruesome murders have begun to occur.

But this is just the beginning...

...

Blue-haired Man: Master, I have returned as commanded.

The blue-haired man, with a red spear as his weapon, walked in with an expressionless face.

Priest: Saber has appeared, hasn't it?

The man with long brown hair in priest shirts said up with blank expression.

Blue-haired Man: Yes. What should I do next?

The man in the priest's robes said nothing more, just staring at what lay before him.

It was a red magic circle the size of a person on the floor.

...

On a narrow, deserted street with dim lights, everything around felt unfamiliar to Yusuke, as if he had entered another dimension.

Yusuke: Where the hell am I!?

He exclaimed in confusion as he walked down the street. Besides not recognizing the place, Yusuke also felt the eerie atmosphere like a graveyard.

?: Hey, kid.

Yusuke: Whoa!

A mysterious voice came from a small figure emerging from the shadow under a street lamp. Observing closely, it was an old, bald, shriveled man with skin like a corpse.

Yusuke: Who are you!?

The man grinned menacingly.

? You shouldn't be walking around at this hour, you know?

The old man abruptly stopped speaking as if he remembered something, then smiled again.

? : So, it's you...

As soon as he finished speaking, the old man laughed maniacally in front of Yusuke. The streetlight flickered and then went out for a moment. When the light came back on, the man was gone.

Yusuke: Did I drink too much coffee and start hallucinating...?

Yusuke stood, puzzled, for a while. When he regained his senses and looked around, there was no one else. Despite that, he decided to keep walking, hoping to find answers about the strange event that had just occurred.

Clang! Clang!

The sound of metal clashing came from the park ahead. Yusuke ran to hide behind a tree to see the source of the noise.

Yusuke: What is that?

In front of Yusuke was a giant black figure, muscular but monstrous in appearance, holding a giant weapon of an indescribable shape. Beside it stood a blonde girl in a knight's long skirt, poised with a sword, even though she wasn't holding anything.

? : How is it not affected at all?

A girl about Yusuke's age in a red shirt and black skirt said it with a shocked expression. She stood next to a young man with auburn hair, both standing at a safe distance.

The giant charged at the knight girl, but she dodged gracefully and slashed the giant with an invisible sword, leaving a long wound on its body. The two fought fiercely, and the giant, despite being covered in wounds, didn't slow down. Instead, it abandoned its weapon and used its muscular, agile body to tackle the girl, sending her rolling.

Seeing this, the giant retrieved its weapon and leaped into the air, preparing to strike the fallen girl.

Henshin!

Boom!

The giant landed on the girl, causing a cloud of dust. As it settled, a silver and purple figure holding a large sword was revealed, blocking the giant's weapon.

It is in Titan form!

Blonde Girl: huh!?

The girl looked up at Kuuga with a puzzled expression.

Yusuke: Are you okay?

Yusuke asked before using all his strength to push the giant back, making it slide away.

The giant: Gahhhhhhhhh!

Meanwhile, the girl in the red shirt and the auburn-haired boy turn attention to Kuuga, both in confusion.

Both of them: Who!?

At the same time, a white-haired girl watching from afar also looked at Kuuga with a similar expression.

White-haired Girl: Is that another servant!?

She said, frowning.

Yusuke: Alright!

Yusuke gripped his sword with both hands, ready to fight.

The Giant: Gaaahhh!

Steam emerged from the giant, and its body turned red. In an instant, it leaped at Kuuga, attacking relentlessly with its weapon. Kuuga blocked with his sword, but the giant's other hand landed a powerful blow on his unguarded side.

Clang!

The sound of metal clashing echoed as Kuuga blocked the giant's fist with his other arm, then used the opportunity to stab through the giant's stomach.

Realizing this, the giant dropped its weapon and used both hands to hurl Kuuga away with even greater force.

Kuuga: Ouch...

Kuuga crashed down a meter away.

At the same time, the white-haired girl watching the battle began to smile wickedly...

but..

White-haired Girl: What!?

Around the giant's wound, a Kuuga symbol appeared. The giant collapsed, writhing in pain as golden lightning spread across its body.

White-haired girl: Berserker!

Boom!

The giant exploded.

The white-haired girl looked on in disbelief. The giant was shattered into pieces, leaving only its weapon and flames burning in the area.

Kuuga slowly got up and approached to ensure it was dead.

Kuuga: What is this!?

Suddenly, the scattered flesh began to reform into a giant.

In an instant, its eyes glowed, and it swung its weapon, sending Kuuga flying even while standing.

The giant's body was fully regenerated, without any wounds.

Kuuga: Regeneration!?

Despite his shock, Kuuga readied himself to fight, unsure if he could win but having no choice.

White-haired Girl: Berserker, return now...

The giant leaped back to the white-haired girl's side.

White-haired Girl: Your new friend is interesting, Rin... I never thought you have hide someone this...intriguing.

She smiled mischievously, finishing her sentence.

White-haired Girl: We will meet again, for sure.

She and the giant disappeared into the thick forest mist.

Kuuga: What is happening today?

Suddenly, Kuuga's instincts told him something was approaching. It was an invisible weapon wielded by the blonde girl he had saved.

The blonde girl attacked Kuuga swiftly, but he instinctively blocked with his sword.

Clang!

In a split second, she leaped and kicked Kuuga, surprised that it had no effect.

Kuuga tried to retreat, but the blonde girl slashed his shoulder armor off faster.

Now both stood at a distance where they couldn't fight.

Blonde Girl: Who are you to interrupt my duel? If you don't explain, I will consider you an enemy.

She pointed her sword at Kuuga.

Kuuga: Wait, I just saved you, and now I'm an enemy!?

Auburn-haired Boy: Wait, Saber! Hold on!

The boy ran to the knight girl, trying to stop her from fighting Kuuga.

Saber: Shirou, this person might be a servant sent to kill us.

The red-dressed girl stepped in.

Red-dressed Girl: Yes, Emiya... I agree with Saber.

Shirou: But he saved us.

Red-dressed Girl: Have you forgotten? Everyone in this war is fighting for the Grail. This might be a plan.

Kuuga: Wait, wait...

Kuuga interjected before slowly transforming back to Yusuke. The three in front of him were shocked, their mouths agape.

Shirou: You're...

Red-dressed Girl: Human!?

Yusuke: Yeah, obviously.

Yusuke gave a dry smile.

Shirou: Who are you?

Yusuke: I'm Yusuke. Only Yusuke...my name it is..

After Yusuke introduced himself, everyone was silent. Only Shirou smiled kindly and stepped forward to show his friendliness.

Shirou: I'm Shirou Emiya. The black-haired girl is Rin Tohsaka, and this is Saber, my friend.

Yusuke looked at the two women behind Shirou, who glared at him.

Yusuke: Your friends are good-looking but fierce.

Shirou laughed lightly and turned back to the two.

Yusuke: I'm not here to hurt you. If I were, I would've already done it.

Shirou: I know. Anyway, thanks-

Before Shirou finished, Rin interrupted.

Rin: But you're a servant, right? Where's your master!?

Yusuke looked confused.

Yusuke: Servant? Master? What are you talking about?

...

In the small living room of the Emiya house, Saber, Rin, and Yusuke sat facing each other at the table in the middle of the room.

Rin: A long time ago, the three great mage families—Makiri, Einzbern, and Tohsaka—summoned the Holy Grail to fulfill the wishes of its holder. However, the problem wasn't with the Grail but with the holders. Therefore, servants were summoned to serve as tools to select the Holy Grail's holder.

Seven servants were summoned by heroic spirits.

Yusuke: Heroic spirits?

Rin: Heroic spirits are individuals who existed in history or legend.

Rin paused briefly before continuing.

Rin: The Servants include Saber, Lancer, Berserker, Archer, Rider, Assassin, and Caster. The mages who summon the servants are called masters. They collaborate with their servants to fight against other masters, and the last one standing is...

Yusuke: The winner.

Rin: Correct.

Yusuke glanced at Saber.

Yusuke: So, this is Shiro's servant, and the silver-haired one is yours. They look quite like real... people.

Shiro: It's better to call them people.

Shirou glanced at Yusuke as he said it in a heavy tone.

Rin: But you don't know about servants or mages. Where did you get your power from?

Yusuke: Ah, I got it from my brother; he was a police officer, and it was evidence. Then I suddenly had the power.

Rin looked confused by Yusuke's words.

Rin: I don't understand... But you said you came from 1999 with the Gurongi—things I don't know about. It's possible you're from another dimension.

Shiro looked shocked.

Shiro: Parallel world or something?

Rin nodded.

Rin: In the magic world, we know there are parallel dimensions and worlds, but we don't have enough power to reach them. Also, it could have negative effects on time and space, so it's forbidden. Someone must have brought you here for a reason.

Yusuke's face turned pale after hearing Rin's words. Parallel dimensions, another world—it meant he really had crossed into another world.

Yusuke: Is there any way to go back?

Rin shook her head but suddenly stopped as if she had an idea.

Rin: If you cooperate with me to defeat Berserker, I'll give you the Holy Grail.

Rin crossed her arms and smiled slyly.

Rin: With the Grail, you can go home. What do you think?

Yusuke looked at Rin. In this situation, he had no other choice but to agree.

Yusuke: Well, that's a good offer, and that guy seems like trouble, so I'm in!

Yusuke turned to Shiro.

Yusuke: And you? Knowing this much, it would be strange not to cooperate.

Emiya: I've already agreed to work with Rin... I won't let anyone die. I'll end this war myself without any bloodshed.

As soon as he finished speaking, Yusuke looked at Shiro with a strange expression.

Rin, hearing this, felt annoyed and glared at Shiro.

Rin: I didn't agree to be your ally.

Rin stood up and pointed her finger at Shiro.

Rin: You're a full-fledged master now! From today on, I'm your enemy!

Shiro: Ah, wait—

Yusuke: Speaking of which, Shiro is also a master.

Both Rin and Shiro stopped and turned to look at Yusuke, who had just interrupted.

Yusuke: What a pity, Miss Rin, but I like this house now.

Rin looked shocked, standing stiffly.

Rin: What!? You're staying with that idiot master! You'll never get the Grail!

While Rin ranted, Yusuke shrugged nonchalantly.

Yusuke: We're both Masters; why can't I win?

Rin calmed down but pouted at Yusuke.

Rin: Remember this...

10 minutes later.

Shiro: Here, you can sleep in this room.

Yusuke: Thanks a lot.

Yusuke opened the door and was about to walk in.

Shiro: Wait, where are you from?

Yusuke turned and answered.

Yusuke: Tokyo.

Shiro: There's a Tokyo in your world too.

Yusuke: Let's leave it at that. I'm tired.

Yusuke closed the door in Shiro's face, leaving him standing confused outside the room.

The next day.

Today's news reported a mysterious gas leak in a commercial building. Authorities believed it to be an accident since there were no signs of tampering. The latest count was 67 dead and 10 survivors, all employees.

Shiro was eating breakfast and watching the news.

Yusuke opened the door just as the news was being reported. He yawned and sat in front of Shiro.

Yusuke: This city has this kind of thing too. Yawn! Wow, soup for breakfast?

Shiro: Ah, another gas leak.

Meanwhile, Yusuke scanned Shiro from head to toe. He wore a brown long-sleeved shirt and pants, looking more like a uniform.

Yusuke: Where are you going dressed like that?

Shiro: School, obviously.

Yusuke: School, huh? Sounds fun... Can I go with you?

Shiro: Are you crazy? ...

Shiro exclaimed but stopped suddenly.

Shiro: Actually, it shouldn't be a problem. You just need to enroll.

20 minutes later

at the front door, Shiro was putting on his shoes and preparing to go to school. Saber, in a maid outfit, approached him.

Saber: Shiro! Why aren't you taking me along? It's dangerous to walk around without a servant.

Shiro: It's not dangerous. I'm just going to school. Besides, Yusuke is going too.

Yusuke: Don't worry. I'll take care of this guy. Trust me, Saber.

Saber looked worried, then bowed her head respectfully.

Saber: Then, be careful, Shiro. If you feel you're in danger, use the command seal to call me.

On the way to school, Yusuke kept an eye out for any threats around Shiro.

Shiro: Listen, Yusuke...

Yusuke stopped walking along with Shiro and looked at him.

Yusuke: What?

Shiro: A lot has happened lately—the war and you—and now I don't know how to handle all this.

Yusuke patted Shiro on the shoulder.

Yusuke: You think too much.

Shiro: Why don't you join Tohsaka?

Yusuke: Because I'm teaming up with you.

Yusuke gave a cheeky answer and walked on, leaving Shiro still wondering about his true intentions.

In the evening.

Shiro: You're in the same class as me?

Yusuke held up his test results with a happy smile.

Yusuke: Yeah, that's right. Tomorrow, you won't be able to get rid of me anymore, haha.

Shiro: Sigh...This guy...

Thump Thump

Suddenly, Yusuke's heartbeat quickened. He felt like someone was watching him.

Yusuke: Maybe I'm overthinking...

But behind the wall, it's turned out. Someone was indeed spying on them...