A/N: Hey there! I just want to let you know that I'm on writer's block for A Certain Xeno Warrior and TRON: Awakening. I've been playing video games for awhile and I thought, 'What if Toaru and Assassin's Creed crossover?'. This got me into the lore of Assassin's Creed again and I want to see where this would go. If you have any story direction ideas, feel free to share them in a review or PM me.

One more thing, some characters will be mentioned while others won't have huge roles so don't expect your favorite character to make an appearance anytime soon and don't ask. Otherwise, write your own story for those who are too lazy and ignorant to learn and try.

And now, without further ado, enjoy this brief prologue as more will come later.

Disclaimer: The following is a non-profit story meant to be for fun to read. Assassin's Creed is owned by Ubisoft and the 'A Certain' series belongs to Kamachi Kazuma.

'Inspired by historical events and characters, this work of fiction is written by a multicultural team of various religious faiths and beliefs.'

Prologue

Sequence 1

The Arctic Circle

13 December, 2017

A blizzard surrounds the icy regions and freezing waters as a small ocean-going ship shines a light in the darkness. On that ship stood a man in his thirties looking out the window of the bridge, struggling to make out where exactly are.

"We've been searching this area three times, and we've found nothing. It's a wasteland, I tell you." He argues in his British accent.

"Don't be so sure yet, Tom. I'm confident that the North Pole is close." The American accented voice reassures him, revealing to be a boy no older than 15. The clothes he dons once belonged to the famous Assassin Thomas de Carneillon. After recovering the 700-year-old relic beneath an abandoned French catacomb, the boy modified the dark brown and black robes to fit in the modern era he currently is living, replacing the old pouches with newer ones and ditching the sword belt around the waist area but kept the throwing knives and empty curved dagger sheathe on its back with the same shoulder strap that bears the Assassin insignia as the buckle. For the boots, he replaced them with modern flat combat versions and kept the old leather bracer with metal plating for the left arm on top. The hidden blade, however, was replaced with a modern one but kept the sheathe for the blade for a more nostalgic look. The big leather belt, red sash dangling on the front and back, and drapes remain the same with the exception of the front drapes a bit shorter for more leg room on parkouring and free-running. Lastly, the traditional Assassin hood over the teenager's head along with the red neck scarf inside is also kept the way it is. Some of his colleagues complain earlier that it's too recognizable for their enemies, even if he modified them, to which he says that he likes the old school design. Plus, they look badass in his honest opinion.

Thomas "Tom" Faulkner scoffs at this. "But Jason, how is it that we'll find a Precursor site through this bloody storm? We should've told William about the Voynich manuscript we found in Japan!"

The young Assassin chuckles. "Relax, will you? I'm sure the Mentor won't mind that we use it to find an Isu artifact beneath the Arctic Circle. And since there's possibly another temple just many miles away from the already destroyed seismic one, maybe that could be an added bonus for us."

"I hope so. Otherwise, it's just another wild goose chase for us." He sighs at the boy's adventurous attitude. "You sometimes sound like your ancestor Edward. Must be in the Kenway blood, no doubt."

The boy's name is Jason Kenway. Descendant of the legendary Kenway lineage throughout the 18th century from Edward to Haytham to Ratonhnhaké:ton (otherwise known as Connor). He is also the first teenager and the youngest to reach the rank of Master Assassin when he recovered the Prophet's Codex from the Templars (now known as Abstergo Industries) in Italy without approval from the Mentor William Miles during a reconnaissance mission. This inspired Jason to look for relics of the past as well as undiscovered Pieces of Eden and even studied the Isu language and was able to learn it in just a span of a few days, capable of reading the Voynich manuscript itself as no one until today could read it. However, considering the Templars controlling almost the entire world, Jason helped worked on the Brotherhood's own Animus project due to his genius intellect and once used Helix a few times to relive his ancestor's unedited memories back before he came into contact with the Assassins themselves.

Looking through the manuscript's pages, Jason shows Tom a drawing of an Apple of Eden. This confuses the latter.

"It's the Apple. How is this new to us?" Tom questions the teen. "All it does is create illusions and mind control people."

"That true. But when I read through the manuscript's writings, it has another feature similar to the one Connor used when he ended up in an alternate timeline where George Washington is king." He explains to his colleague and best friend.

"Wait, read?" The older man interrupts him. "I thought no one can understand the writings in the manuscript. How the hell are you able to know what it says?"

"Hey, studying Isu symbols and letters in a span of a few days allows me to know what this book really says. Also, I was somewhat bored. And no, I haven't told William about it before we unexpectedly found the Manuscript so don't ask why."

Tom nods in understanding, not wanting to when he had the time to learn to read and even speak Isu. "Duly noted. But anyways, what's so special about this Piece of Eden if you don't mind my asking?"

"To be honest, I'm not so sure for myself. The manuscript said something about it having the ability to enter other realities." Jason answers with a shrug.

"Other realities? Like different timelines?"

"No. I think it means parallel universes or something like that. Probably the Isu might have been looking for a way to escape the solar flare that killed off most of their kind over 75,000 years ago." The teen theorizes. "However, like I said, I can't be certain just yet. And the manuscript gave us a possible location of the artifact, which is at the center of the Arctic Circle. I'm surprised the Templars haven't had someone to learn and speak Isu."

"If that's true to what you've read Jason, then we need to make sure that the Templars never find this Apple. If they get their hands on it, who knows what they'll do."

Jason nods in agreement. "Agreed."

Suddenly, the ship has hit something as the two Assassin's fall onto the floor from the impact and they immediately got up.

"The hell was that?!" Jason shouts. "Have Abstergo been following us?"

"No, look!" Tom exclaims and points out the window.

Jason looks at Tom's direction and his eyes widen in amazement. "Whoa…"

Their small ship have arrived on the shores of a rocky island that's not known to any man on Earth. There were even some shipwrecks that date back to the time of the Vikings. Docking and jumping off the ship, Jason and Tom went for a closer look at the old vessels, only to find nothing but remains of dead Vikings and weapons scattered everywhere.

Tom crouches and briefly studies the bones with his gloved hands. "This looks to be a small convoy dating back to the 6th or 7th centuries."

"Yeah…" Jason says as he looks around the wreck sites. "They must've gotten lost with the other fleets and somehow ended up here in the Arctic. And man, it's cold as fuck!"

"I'll say." Tom agrees getting back up only to notice a crevice big enough for people to walk in. "See there?"

Jason notices it too and tosses the manuscript to Tom whom the latter catches before the former walks toward the crevice. "That could be a way to a Precursor Temple. I think I'm gonna go check it out."

"Hold on, you expect me to let you go alone?" Tom asks, not so sure if it's a good idea. "I think it's best if we head back to the Mentor and tell him about this place."

"Pffft. And what? Tell him about a place that we haven't confirm yet? Not a chance. And of course I'm going alone. I've lived on the streets since the day I was born. I can take care of myself. If I don't make it back to the ship in two hours, take the manuscript and leave without me, and tell William about this place, and ONLY him. The last thing we need is for this war to reach other realities, something that I can't let happen. One world is enough after all."

Jason then takes off running into the crevice, disappearing from Tom's line of sight before the latter could argue back. The older Assassin sighs in frustration with the boy not listening to what he has to say.

"Teenagers these days." Tom mutters to himself as he heads back to the ship. "I don't know what I'm going to do with him."

(Time Skip)

As the young Assassin free-runs and parkours tall rocks he sees a door that looks to be Isu in origin. However, the door is sealed shut and no way inside.

"Great, how the hell am I supposed to get in now?" Jason mumbles in frustration as his gloved hand is on the door. Suddenly, he realizes something. "Wait…"

Using Eagle Vision, Jason sees a hidden symbol on the doorway recognizing it. "That symbol on the wall. Holy shit, that's the tetractys. And if I'm right…"

Jason's vision goes back to normal and takes a deep breath before saying the password out loud. "72."

Suddenly, the tetractys symbol on the door glows in an electric blue hue and the door slowly descends downward into the floor of the entrance.

"Just like the door to the Coliseum Vault." He recalls with a smirk on his face, as it was too easy for him to solve the puzzle in opening the temple door.

Jason then walks down the dark stairway as it is taking him deep beneath the center of the Arctic Circle. When he reach the end of the steps, he looks around his surroundings and deduces that he's in a huge cavern with a tall pillar in the center, surrounded by a deep pit that seems too dark to see. And at the top lies a pedestal where the artifact is resting on.

"That must be where the Apple is." Jason concludes aloud. He then smaller pillars of rock in the huge gap. "Looks like that's my way to get up there."

He then jumps across and grabs hold of the first pillar's ledge when the pillars becomes unstable as Jason perches on top. It topples forward and he jumps to another one and another until he makes it to the last one before grabbing onto the wall of the Isu-structured tower. Looking back, he sees that the other pillars are gone with no way back across.

"I'll worry about that after I've reached the top." He says to himself as he wants to focus climbing first.

A little while later, Jason finally reaches the top of the tower. And standing before him is the Apple of Eden (the size of a baseball) itself giving off a glowing gold aura.

"To think that I get to hold onto one." He comments as he slowly picks the Apple up with a single gloved hand until the golden metallic orb begins to shine brighter, forcing him to cover his eyes.

"Gah! So bright. Jeezus, turn down the damn light, will you?" He complains as he accidentally drops the Apple onto the ground and the light covers his vision before everything went black.

(Time Skip)

Jason's eyes slowly open up and wakes up as his head is aching from that blinding light illuminated by the Apple. When the paining headache stopped and his vision stopped being blurry, he notices that he's in an alleyway of sorts and looks up to see that it is already nighttime. But then, he realizes that he dropped the artifact and looks down as there's no glow coming from it. Picking it up, the young Master Assassin puts the Apple in his belt pouch and starts wondering what to do next.

"The Apple must've transported me to another part of the world." He says to himself before sighing. "Well, I can't contact Tom since Abstergo is monitoring communications, so I guess I'll find my way back home then. But first, I need to find out where exactly am I."

He looks up to see an abandoned declining church before smiling again. "A bird's eye view is just what I need right now."

Climbing up the bell tower with his skills he picked up from the Animus's 'Bleeding Effect', he perches on a ledge takes a better view with his surroundings. Unfortunately, the city's skyline he's seeing now is nothing like he has ever seen before and on his right, he could see another city that he's been to before a few times. Not to mention, a really tall and large tower that's above the clouds.

UBISOFT presents

ASSASSIN'S CREED
- UTOPIA -

Japan

23 January, 2023

5:15 A.M.

"That's Tokyo. So I'm back in Japan then. You know what, I should contact Tom just to be safe."

Jason brings up the frequency number in his earpiece underneath his hood, but only received static on his end and learned that the number he's trying to reach does not exist, confusing him.

"None of this makes any sense. If this is really Japan, then what city am I in exactly? I've never seen a city with so many modern buildings before (not counting real-life cities, readers). Before I can do anything else, I probably should get out of these robes and hide the Apple where no one would even look for. I'm guessing walking in public with these old threads is out of the question, no doubt."

He then spreads his arms and performs a Leap of Faith before landing in a bale of hay, considering carts full of them in urban cities have been very rare and are already no longer in use in the present. Coming out of the landing spot inside the old cathedral, Jason finds it odd for a haystack to be placed here though he shouldn't question the logic behind it, so he didn't bother finding out.

(Time Skip)

Already in civilian clothes, he walks on the streets of this unknown city as it is already sunrise and looks for directions for a library. Thankfully, there was a map of the entire city displayed and learned its name.

"Academy City, huh?" the Assassin wonders. "Strange name for a city I've never heard of. And the library should be… there. In the first school district."

After taking quicker routes he found useful to him, he was already inside the library. And being the bookworm he is, he learns that the history is the same with the exception that Abstergo Industries and Animus technology not existing, including the 2012 solar flare crisis (which never will come to pass in the future). This would mean that the Apple in his possession transported him to an alternate timeline, proving that the theories in the Voynich manuscript's writings are true when he touched the artifact. With no other choice in the situation he's in, Jason decides to blend in with the people of this reality and lay low until he has found a way to return to his own timeline.

As for what info he could learn about Academy City, it's a sovereign city-state that use to be Tokyo's old industrial district and is independent from the Japanese government. It is also home to people with psychic supernatural powers called Espers ranging from Levels 0 to 5 (with the existence of 7 famous Level 5s). And considering himself as an illegal immigrant and popping out of nowhere with no official records, Jason will have to forge fake ones and pose as a Level 0 to avoid suspicion while looking for a way home with Academy City's advanced technology. For now, he needs to gather food and supplies as he decides to live in the old small cathedral and maybe find secret tunnels beneath it so that he might get around the city faster undetected. And after that, he'll continue learning about this new world that he's curious of and see if any Precursor artifacts exist here as well. If they do, then it's his job to prevent them from falling into the wrong hands, especially from the scientists of Academy City as he has read a few online articles about the Level 6 shift experiment that Espers would wield the power of God. While he is glad that the people behind it are behind bars and no longer a threat, their actions disgusts him because these corrupted power-hungry scientists uses children as test subjects to achieve their twisted dream of creating a godly being. Therefore, he'll help in any way he can and continue the fight against evil and tyranny for the free will of the human race just like he did in his world. No matter the cost.

A Few Hours Later…

After purchasing food, clothing, medical supplies, and a laptop (which he later modified to prevent hackers from spying or tracking him) Jason went to explore the cathedral when he stumbled upon an empty small room and accidentally leaned on a stone panel on the wall, opening a secret stairwell on the floor. With a raised eyebrow, he walks down the steps until he has reached another door down a small hallway. Walking towards it, he notices old banners on the walls with the familiar black Assassin insignia. Hoping on what place he's found; he then opens the old wooden door and is shocked at what he has discovered.

"I think I just found an Assassin hideout." The Assassin deduces as he looks around the small hideout. "But this place looks to be a few centuries old and I guess it's been abandoned for whatever reason."

The place is a mess, however, as there are cobwebs and dust everywhere. Turning his head on his right, he notices a shelf that only has a few old books written in Japanese. The first one reads 'The Assassin-Templar History' and through its Japanese writings he learns that the most of their history is the same until that there's no page about post-WWII events, which made Jason suspicious and confused.

"No, no. That can't be it. Where's the rest of it? There has to be more than this."

Noticing a piece of paper on the shelf, he picks it up and sees that it's a message of sorts. It reads:

'Tokyo

August 16, 1953

Whoever reads this, I am out of time. The Templars have already wiped out other factions the globe and are already killing us off one by one here in Japan now. It's a 'Great Purge' out there and they are fulfilling their dream in the form of a city where it will one day have people with extraordinary gifts. They are calling it Academy City, and it is already too late to stop them.

I write this message so that the Assassins shall one day rise again and liberate the people that are manipulated and influenced by those with their own gains in their so-called vision of peace by enforcing order. But not in our time, unfortunately. If you are reading this in the future, then it is up to you rebuild the Brotherhood.

In this sanctuary you're standing in, there is a book that details the entire history of both Assassins and Templars, going back to the time of Cleopatra and Julius Caesar including plans of our weapons and the tenets of our creed. Lastly, there is also a journal I have written as it houses my research on a Precursor artifact hidden somewhere beneath the surface and they have not found it yet.

If you are willing to do whatever it takes to save civilizations from their clutches, then be prepared for the truth of the history you thought you know.

We are counting on you, Assassin. And may our Brotherhood last until the end of time.

Signed,

Saten Hideo, Mentor of the Japanese Brotherhood'

"That means… I'm the last Assassin on the planet. And Templars now control the world through controlling Academy City." Jason's eyes widen in realization and shock at this revelation of the Assassins in this timeline. "But if he says that there's a Piece of Eden beneath the city, then it is up to me to find it and prevent it from falling into Templar hands. I cannot let that happen. For the future of not only the Brotherhood, but for the future of mankind so that they are free to choose their own path. And no matter how long, I will stop them. Whatever it takes."

End of Sequence 1

A/N: Follow, review, and favorite this story. Again, if you have any chapter ideas, PM or leave a review and I might choose a co-writer.