Uploaded: 18/01/2021

3:50 AM AEST – Australian Eastern Standard Time GMT+10

A Naruto and Fate series Crossover

Disclaimer: "Naruto" is a property of Masashi Kishimoto, Shueisha, and Studio Pierrot; "Fate/Grand Order" is a property of DelightWorks and published by Aniplex, "Fate/Stay Night" is a property of Kinoku Nasu/TYPE-MOON. I do not own any of them.

This is a work of fiction. Names, characters, businesses, places, events, locales, and incidents are either the products of the author's imagination or used in a fictitious manner. Any resemblance to actual persons, living or dead, or actual events is purely coincidental. Reader discretion is advised.

A/N: I'm not a whale, I'm just a small fish in this game. Also, this is not a very serious fic, there is a peanut gallery coming soon, but Lord Uzumaki is part of that peanut gallery.

A/N: Please join Aizen the Goat's Discord Server, it's a great place: kyTaRuVpBW

Genres: Action, Adventure, Romance, Comedy, Epic Fantasy, Drama, Supernatural

Warnings: Violence, Strong Language, Implied Sexual Content, Long Speeches, Foreign Languages, SOME CHARACTERS WILL BE OOC

Tags: Immortal/Intelligent/Serious Naruto/Minor crossovers/Harem

Universe: Animeverse/Mangaverse

Series: The Chronicles of the Eternal Sage - Main Series

"Jutsus/Time change/ Place change"

"Gods/Goddesses/Heavenly Beings/Demons or Dragons Talking"

"Gods/Goddesses/Heavenly Beings/Demons or Dragons Thinking"

'Flashback'

"Talking"

"Thinking/Telepathy speaking/News/Messages/Videos/Different Languages"

Translation if using a different language.

"I fear dark days are ahead of us... my lord?"

"Then you must be ready for anything."

- A conversation overheard

Volume 1 - First Order

Chapter 2: Halcyon Days

Previously from Naruto Uzumaki: Stargazer…

Mash Kyrielight sat over a windowsill, her eyes watched the blizzard outside and hopeful that the sun may show up, but it never did, not in this place, she knew, but she was always hopeful.

"Mash," called out a voice from behind her, and she turned to see another young woman, and the most noticeable feature of this woman is her black eye patch, "good morning."

"Oh, good morning, Ms Ophelia," Mash greeted back with a cheerful smile, something Ophelia Phamrsolone found difficult to return, perhaps because of upbringing, but she had no desire to think about that, "what is it?"

"Lord Uzumaki wants to see you in his office in 20 minutes."

Story Start.

Chaldea is a home to a diverse group of humans, magus and otherwise ever since it was founded by Marisbury Animusphere, and his inexperienced daughter was forced to take over despite being young, and of course, that backfired splendidly as Lord Uzumaki said, and so, the said Lord took over, which Olga thought would be temporary.

She was dead wrong.

"Lord Naruto of the Chaldean House of Uzumaki, Director of the Organisation for the Preservation of the Human Order, Finis Chaldea… sounds good. I must inform the Empire-beyond-the-Sea."

Those were the words he uttered when he took over Chaldea in the wake of Olga Marie's descent to depression, and of course, the staff hired by Marisbury were more than welcoming, he was the real source of their income, after all, being the prime sponsor of Chaldea to spite the Mages' Association and the Clock Tower is something he found amusing.

Though they had no idea what he meant by Empire-beyond-the-Sea, and he never told them anything, other than it is of no concern to them, and that was a few years ago now.

Today, however, Lord Uzumaki was busy in his office, and as a usual sight for some time now, Ophelia acts as his secretary, with complete unquestionable loyalty, perhaps because in Ophelia's mind, Lord Uzumaki is her saviour and her anchor in this unfair world.

"Ophelia, dear… what did I say concerning the Singularity F?" He asked as he worked through some papers that Da Vinci gave him.

"… uhm, that you will summon a servant before we Rayshift there?"

"Hmm, much work to do with that personality it seems, but yes, thank you."

Ophelia remained silent after that, having been used to such comments by him, and she thought nothing of it, notwithstanding the odd patting of her head whenever he walks past her. The staff concluded it was adorable while some of her colleagues in Team A thought of it as funny.

She found it comforting, but she'd never voice that one out. Ophelia would have continued with her reflection of her life, until Mash Kyrielight, the ever-lovely Mashmallow as he affectionally calls her, entered his office.

"Ah, Mashmallow, sit, I've been expecting you."

Mash blushed and pouted, but sat down, nonetheless. Ophelia remained silent; she knew that her lord referred to Mash as such for as long as she knew her.

"Ok, it's the 25th of May, anno Domini 2017…" the Director muttered as he began a new report, then turned towards Mash, "Mashmallow, report on training the present Master Candidates."

"Yes, sir," began Mash before she cleared her throat.

"All members of Team A are combat-ready according to your criteria, but they require more work on teamwork, Ms Ophelia here can attest to that. The rest of the currently gathered Master Candidates are good for reserve capacity should any of the Team A members fail and be incapacitated."

Ophelia listened intently and she nodded when Lord Uzumaki turned to her, this while Mash continued with her report which Naruto typed down rapidly.

"Their training would resume promptly tomorrow after the break you gave them," finished Mash, while Ophelia remained silent, but Naruto found something to say.

"… I must confess, Team A didn't need any training, maybe Kadoc but not really, all they truly need is teamwork, I'm sure dear Ophelia agrees with me, but alas, there is not enough time, let me warn both you…" he paused and took a moment before he continued.

"In the coming month, everything you know will be put to the test, be wary of the Command Room during the day of the Rayshifting to Singularity F, and I will take up both of your training personally. Confer to the Chaplain, the good Father Aurelius tomorrow."


-Chaldea's Cafeteria: 26th May AD 2017-

Quiet day, or so Ophelia thought as she ate a simple lunch during her break time from the simulator room. It was a gruelling day, and even more gruelling training. The Director did not hold back on testing their combat capabilities should it come to be useful.

Though, she noticed some of her teammates, the more experienced ones, had no problem with the basic combat training, which is why the Director went harder against those people, most notably Beryl Gut, Scandinavia Peperoncino, and the team's leader, Kirschtaria Wodime.

"…" she said nothing as she continued to eat in solitude, until she heard music, from a piano.

"… Siegfried's Funeral March, on a piano?" Ophelia whispered to herself, having known that piece since it was one of her parents' favourites. The only good memories that she had from her younger days was the music, which her parents loved, sadly, more than her.

But as she learned from the one she considered her saviour, the Director, she pushed those memories towards the back of her mind, to be forgotten for as long as possible, then she hastily finished her food to see the pianist that she listened at that moment, because next to the cafeteria was the lounge room, where a piano was placed sometime in the past.

She saw that there were other staff members present in the lounge room when she came by and saw the pianist himself, the same priest and chaplain of Chaldea, who masterfully played the music of Wagner, perhaps in his arrangement, as she have never heard of that arrangement before.

"…" everyone was silent until he finished, and they all applauded.

"Look at him, showing off again," the Director whispered behind her, and she turned to see him there with an amused smile, which Ophelia shyly adapted.

"Come on, we have more work to do, leave the old priest to his fans."


-Da Vinci's Workshop: 30th May AD 2017-

Leonardo studied the reports sent to her yesterday, and she already had new ideas to utilise for the future, when they will be most sorely needed, especially the one labelled as "Shadow Border", but that one can rest in the basement until the day for that one comes.

"… what the hell? What else is that priest hiding? Why does a simple priest like him have access to these kinds of information and technology?" she rapidly wrote down notes, until she halted when a realisation dawned on her.

"Hmm, my dear master is hiding things from me it seems, or maybe hiding until the secrets are unveiled by their keepers, anyway, not my problem for now," she crossed her arms as she pondered more things.

Said master entered the room like normal, and she delicately raised an eyebrow when she saw that someone accompanied him, that someone is his self-proclaimed aide.

"Ophelia here needs some items for her training, like a new mystic code, the one I designed with you," said Naruto, while Da Vinci nodded, having been privy to some of her master's plans.

"Understood!" She replied enthusiastically, being back to her normal self, whatever normal means to her.

Minutes passed, then an hour came by, and they were still not finished tinkering with a new mystic code, among the other things that the Director ordered.

"Good afternoon!" a new voice interrupted their work, and all three turned to see a man in a black cassock, with a white short hair and short full beard.

"Vice Director," greeted Da Vinci amicably, while Ophelia gave a curt nod.

"What brings you here?" Naruto asked while the priest gave him a pointed look.

"You, I have something to tell you, in private," the priest said and Naruto silently made a shadow clone, and none were surprised, having seen the secret ability of the Director before.

Though, the presence of the priest, Father Aurelius Leviathan, made Da Vinci and Ophelia remember something from a year ago.


-Flashback: 1 year ago-

Most of Chaldea's staff were in the cafeteria, including Director Uzumaki and Co-Director Animusphere, enjoying a nice lunch cooked by the Director with the help of the kitchen staff. Even Da Vinci who rarely showed up was there, accompanied by Ophelia.

The engineers like Hinako Akuta was in a corner, silently eating the delicious food, while others chatted with one another. Mages were also there, amongst them, Kirschtaria Wodime, the would-be successor to Marisbury if Naruto did not step in and became Olga's caretaker in her bout of severe depression.

It was a regular day for the preservers of the Human Order until they all heard a shout from the nearby infirmary.

"Beryl!"

It was the Doctor, Romani Archaman, late for lunch, because he was supposed to check in with Mash, then the ground shook, and the mage called Beryl flew across the dining hall and slammed hard at the wall.

No one reacted immediately outside of being shocked, until another person, a man in black appeared in a blink of an eye and slammed Beryl back on the wall.

"Father Aurelius! What are you doing!?" shouted Olga, but the priest ignored her and kicked Beryl back into a wall and the mage went through it.

The priest walked through the hole while Romani finally appeared in the kitchen and went straight to Naruto.

"…" Naruto nodded while Romani returned to the infirmary.

Olga turned to him and watched him stand silently and followed the rampaging priest, Chaldea's official chaplain.

Most were shocked at the strength of the old priest, but not Naruto, and even the noble mages like Kirschtaria and Ophelia were quietly surprised. The priest, who is usually kind and funny to others, only showed wrath during that moment, righteous wrath as Naruto already knew.

"Father," called out Naruto as he stood by the large hole in the wall, calm but measured.

Da Vinci quietly observed her old friend, and she had no idea what happened, perhaps she would ask him later.

"Don't bring out that Holy Sword, I beg of you," he called out, voice still calm and everyone else was silenced by that.

Holy Sword? Which one? And why does a priest have it?

"You'd flatten this entire mountain if you use it. Ok, ok, not the Holy Spear, keep that one out in your pocket dimension, let's not lose ourselves with this piece of filth, leave him to me, Father."

Olga and others could only ponder what on earth happened, because the priest went back to his normal self later that day, acting as if nothing happened.

But still, superhuman strength, a holy sword, and a holy spear, under his control, no one forgot what they heard their Director say, but the Director only told them that don't think about it because it has no bearing in his job here in Chaldea.

Though, Beryl Gut spent the following months in detention, locked away from his access to Chaldea while recovering. He somehow did not remember who beat him up, only remembering the Doctor finding him with Mash, then nothing. His future teammates would say nothing during their practice runs.

Da Vinci thought to herself, that priest is dangerous, but in a good way, since she learned from Naruto what happened in the first place. Though she promised to keep it quiet, and she will.


"… has been planted by Flauros and I have tampered with it," was what Mash overhead as she approached the Director and Chaplain outside Da Vinci's workshop.

"Good, I'll check later… oh, hey Mashmallow," said the Director as the two men turned towards her with a small smile, the Chaplain gave her a high five, as usual.

"Need something kid?"

"The Director is needed in the command room," answered Mash while Naruto nodded, then turned towards the priest, who then gave a nod and left at that moment.


-Chaldea Command Room-

When Naruto entered the command room, there was chaos, pandemonium, hysteria, call it whatever.

From those halcyon days to this chaos, it was a dreadful change. Of course, Naruto expected this day to come, his guest and pseudo-prisoner, the priest from a faraway world, gave him most of the information that he required for this Grand Order.

"The SHEBA Lens has detected an abnormality!" A staff exclaimed while Olga watched with trepidation, meanwhile, other operators made their corroborating reports.

"Coordinates confirmed!"

"Abnormal value rising!" said one operator.

"LAPLACE is assessing the situation!" shouted another, then Olga noticed something wrong with CHALDEAS before them.

The light that represents the civilisation of Earth began vanishing, and that could only mean disaster for all mankind.

That was when Naruto arrived at the command room, having known what happened due to the information fed to him by his guest and Chaldea's Chaplain.

"… gather all Master candidates right now!" He ordered sternly, and the people in charge bowed and went away immediately, then he turned to the others before him.

"I order that the Rayshift experiment be moved into practical phase, the future of this world depends on it, onwards!" He shouted before he watched where the coordinates pointed on the map.

"Fuyuki… what is with this town and Holy Grail Wars?"


A/N: Well, here we are. Don't mind the priest, he is the future peanut gallery, and the representation of the audience in the story, and frankly, the main connection to my Omnipotence story, which is undergoing soft reboot at the moment, and it is taking time, sorry about that. Life happens.

Chaldea's Top Officials

Director and Field Commander: Lord Naruto of the Chaldean House of Uzumaki (also a Master)

Co-Director: Lady Olga Marie Animusphere (Failed Master Candidate)

Vice-Director and Chaplain: Fr Aurelius Augustinus Marcus Leviticus Leviathan

Head of the Technology Development Division and Chief Engineer: Lady Leonardo da Vinci (also a Caster servant)

Head of the Medical Facility: Dr Romani Archaman


Previews:

"My name is Ritsuka Fujimaru, sir!"


"You can be incredibly stupid at times, Director. You know that don't you?"

"Yeah, but I made the old priest keep me in line, mostly."


"LEV! Damn you to hell!"


If you have any questions, or if you want to play some video games with me, contact me on any of these accounts:

Discord: #9066 | Join my private Discord server if you want: caVBu2K

Steam: Pope Pius XIII (Profile pic is the Flag of the Vatican City State)

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Blizzard (Overwatch): ExDurandal24#1315 - Server: Americas

GOG Galaxy: Jello242

Uplay: bfigu

Xbox: JelloUzumaki24

Email: Ex-Durandal24 protonmail . com

Fate/Grand Order (NA - English): Bonjello, 267,838,861 – Main Account (Friend's List in this one is nearly full)

Fate/Grand Order (NA): Pius XIII, 517,360,382 – Second Account

Fate/Grand Order (NA): Pius PP XIII, 016,060,494 – Third Account

Fate/Grand Order (JP): Claudius, 453,568,669 – Main JP Account