We open up to a kid's room. Everything is dim except for the one thing on, a Steam Deck. The room is littered with video games, models of servants and other anime characters, and a single Makima plush. The kid playing it finally says something. He has raven black hair and serious dark rings under his eyes like he binge watched all of One Piece. His left eye is gold while his right is green. His outfit is a light purple hoodie.

Shikai: You've got a lot to learn Kuro. But I'll mold you into a perfect Baiken main!

The Introvert: Shikai

A holographic screen pops up revealing the kid on the other side of the screen. He's wearing a helmet with a visor. His eyes are blue. And he has a smile on his face.

Kuro: Thanks dude. You're right. Strive is fun!

The Sword Fanatic: Kuro

Kuro: But, what do I do after a tether?

Shikai: If you get a successful tether, the option depends on the situation. If the opponent is blocking, the tether keeps you in range so you can do a really tight blockstring. Try to throw in a sweep as well. But if the opponent gets hit, use a tatami and just go nuts from there. If you have the meter and have them close to the wall, finish it with an overdrive! LIKE SO!

A few seconds of combos later…

SLASH!

Kuro: HOLY SHIT THAT WAS INSANE!

Shikai: (smug) Told ya.

RING!

Shikai: You heard that?

Kuro: Yep! I heard it at my door too!

Both: (Excited) OUR MONTHLY ISSUE OF GRAND ORDER MAGAZINE IS HERE!

Kuro rushes to his door while Shikai calls on his personal maid to bring it up.

Shikai: (Calling) Bring it up Yomi!

Yomi: Yes, young master.

The two friends both receive their packages at the same time. But something is off… The package has an unusual label on it.

Kuro: For our loyal and always eager subscriber? HNGH!

Shikai: OUCH!

Their birthmarks on their hands start to glow red.

Shikai: (Seething) The hell is this!?

Kuro: (Pained) Shikai, I think whatever's in there is resonating with us.

Shikai: But that could only mean.. No way… It CAN'T BE! THIS IS A FANTASY MAGAZINE.

The two open up their packages and see the usual issue, but now with a mysterious letter and a band that looks like a fitbit.

Shikai: (Reading) Thank you loyal subscriber. For your support and a look at your background, you have been chosen to participate in the upcoming Cyberstreet Grail War. You'll be facing legendary masters as well as fellow newcomers. You have one month of preparation as the grail war starts on July 20th. Best of luck! From Chaldea and the Mage's Association.

Their birthmarks stop hurting and are now red instead of black.

Kuro: (Awestruck) Dude… were we just…

Shikai: (Aghast) Yes we were… Alliance!?

Kuro: Definitely.

Shikai: The letter says "Cyberstreet Grail War" Maybe it has to do with these bands.

The two put on the bands and their birthmark pulses. The band turns on and activates. And unleashes a blinding light!

Shikai: I LOVE THE MAGE'S ASSO-

Kuro: THIS IS A DREAM COM-

Cyberverse: Welcome Area

The two pals arrive in the Cyberverse for the first time. They regain their consciousness and find themselves in an area made entirely of digital cubes.

Shikai: Woah, it's like Mario + Rabbids kingdom Battle!

Kuro: (Weary) No man, it reminds me more of Seraph…

?: So it seems some pop culture addicts are the first to register. Honestly, I couldn't have asked for better Senpais!

A certain Devilish Kouhai finally makes her grand entrance!

Cue BGM: FGO BB Channel

Kuro: (Seriously) What do you want BB.

BB: Calm down Kuro Senpai! Holmsey has me on a leash so I can't try anything. Apparently, I'm supposed to be one of the two overseers for this grail war. (Barf) So tell me about your wishes.

Shikai: (Sarcastically) Okay then braindead beast. I'll tell you. My wish is to become a hero of the shadows. Like Batman, or Sasuke. I also wish to make more friends since I'm an introvert.

Kuro: And I wish to become a swordmaster like those in legends!

BB: Okay then, follow me.

She then turns around and walks through a portal that just opened. The two best friends jump in after her…

Cyberverse: Neo Olympus

The Domain of the Hero of Shadows

The three exit the portal and are now in a mix of Olympus and Shinjuku. The combination of the many lights illuminating the streets and the illustrious night sky absolutely stunned one of the two boys speechless. The other one…

Shikai: Holy Guacamole on Rye… This is a Utopia…

BB: Yup! And we can't have its hero looking like that can we?

With a wave of her wand, Shikai's outfit changes from his hoodie to a custom made toga and sandals made to look like Sasuke's Shippuden outfit. It even has a short sword like Sasuke's!

Shikai: Holy shit…

BB: I knew you'd love it. Try doing some ninjutsu.

Shikai does some hand signs and then outstretches both of his arms. Magic circles appear and Black Lightning comes from them. He then disappears with a smirk on his face before appearing behind BB with both palms put together.

Shikai: DOUBLE CHIDORI!

The attack hits BB point blank but does nothing.

Shikai: Woah, that was sick! You okay BB?

BB: Tis but a scratch Senpai! Now it's your turn Kuro Senpai!

Another portal opens up and sends the three to another location. This one has a bright blue sky and idyllic cherry blossoms.

Cyberverse: Neo Shimousa

The Domain of the young Swordmaster

Kuro: Somebody pinch me! I must be dreaming!

Shikai stabs an empty syringe into his shoulder.

Kuro: OW! I said pinch me! Also, THIS ISN'T A DREAM!

BB snaps her fingers again and Kuro is decked out in samurai armor.

Kuro: Wow… Do I get my own sword too?

BB: Yup! Just trace it with your finger.

Kuro traces a Massamune with his finger and it spawns into existence.

Kuro: (Ecstatic) I CAN TRACE SWORDS!

Kuro faints from the excitement overload. Shikai uses his newfound "magical ninjutsu" to summon defibrillators

Shikai: CLEAR!

ZAP!

The shock causes Kuro to immediately spring back to life.

Kuro: ITADAKIMASU! Oh, what happened? I was dreaming that the Mage's Association was real, and I was wearing samurai armor, and we met BB…

Shikai: You passed out due to excitement. And no, it's not a dream. The games and magazines are real. All of it is real!

BB: Well, I'll let you two get adjusted. I gotta go. And why haven't you summoned any servants yet!? Go! You get to summon 3 each.

Kuro: Got it. See ya later BB!

Shikai: Stay safe!

The two digitize and return to the real world. Meanwhile another character arrives in the cyberverse welcome area.

BB: Welcome. Your name is Izanami, correct?

Real World

A few days later…

The two decided to meet up and have their summoning session at Shikai's penthouse. They decide to do the ritual on the glass balcony (Which is made of the most indestructible glass known to man.),

Kuro: You ready dude?

Shikai: Yup. I have my catalysts. I got the most expensive Sake I can find and this scale I've always had with me. I also found this children's book in the basement. Was starting to collect dust.

Kuro: The Little Mermaid!? (Laughs Hysterically) I didn't know you were into Disney Princesses my man.

Shikai: (Embarrassed but also almost laughing) Shut up… let's get to work.

The two make their summoning circles and Shikai goes first and uses the book. He channels all of his magic into the circle and the first of six pillars of light rises into the sky. And from the dust cloud, emerges an unexpected figure…

?:Alter Ego, Sessyoin Kiara. I have come to answer the voices calling for salvation. But...hehe... I wonder about the sort of person who would summon a woman like me. I am the Devilish Bodhisattva who savors all living creatures, sentient or not. You have no choice now but to stay with me until the very end.

0-1 END