Hello all Storm here with a new story! Here we'll be seeing a rather interesting idea, which I'm surprised hasn't been tried before, to my knowledge at least. I won't say anything, though the title should be a big enough clue what you're all about to read. So, without further ado.

I own nothing

Edited: 10/21/20

For thousands of years, there has existed a hidden world on Earth, one filled with creatures and beings that were believed to be nothing, but myths and legends. Creatures such as Vampires, Werewolves, Dragons, and Gods, the latter group being the various pantheons that exist throughout the world. Such as the Greco-Roman Gods, Norse Gods, Hindu Gods, and Shinto Gods as just a few examples, each representing their own Faction. With there being many other Factions as well, such as the Yōkai Faction, the Carmilla and Tepes Factions, and many more.

But there was one Pantheon that stood above all others. One with three separate Factions, that were interconnected together since the beginning of time, while being regarded as the Three Great Powers.

They were the Three Factions of Angels, Fallen Angels, and Devils.

With the Angels being led by God, the Fallen Angels led by Azazel after being cast out of Heaven, and the Devils being led by the Four Great Satans, Lucifer, Beelzebub, Leviathan, and Asmodeus. And for thousands of years, it was believed that the Devil race originated from Lucifer himself, who was seen as the original Devil, from which all other Devils came from. With the Four Satans seen as the leaders of the Devils up until their deaths, leading to the rise of Sirzechs Gremory, Ajuka Astaroth, Serafall Sitri, and Falbium Glasya-Labolas.

The four strongest Devils of their generation and regarded as the strongest in the Underworld. With Sirzechs and Ajuka being regarded as Super Devils, having achieved power surpassing the original Satans. The four of them taking up the titles of Lucifer, Beelzebub, Leviathan, and Asmodeus, with Zekram Bael taking the position of de-facto leader of their race.

This being seen as a precaution, in order to prevent the current Satans from becoming corrupt and power-hungry, like their predecessors before them.

But unknown to many, except those old enough to remember, the Original Satans were not the original leaders of the Devils, nor was Lucifer the true creator of the Devils race.

With it having begun, when Lucifer and his followers were first cast out of Heaven, for rebelling against God and opposed his teachings. All of them having been little more than Fallen Angels, having fled to the Underworld to escape persecution from their father and former siblings. This being where they all came face-to-face with the Prince of Wrath and Ruler of the Underworld. The one who had infiltrated the Garden of Eden and corrupted Adam's first wife to become his queen. Regarded as one of the most powerful beings in existence, rivaled only by his archenemy and counterpart, God.

The Original Devils, Demon King Satan and Demon Queen Lilith.

The Fallen Angels had submitted themselves before the Prince of Darkness, with Satan and Lilith accepting them, before remaking the Fallen Angels into their own image. Giving rise to their new lives as Devils, with six of them being elevated to Satan's Generals and Trusted Advisors.

Lucifer the Prince of Pride.

Belphegor the Prince of Sloth.

Mammon the Prince of Greed.

Beelzebub the Prince of Gluttony.

Leviathan the Prince of Envy.

Asmodeus the Prince of Lust.

Each of the reborn Devils embodying one of the Seven Deadly Sins, with Satan as their leader and the Prince of Wrath.

Under the rule of Satan and Lilith, the new Devils began enforcing and carrying out their Will, while entering a Golden Age as a result. With the Devils expanding their territory throughout the Underworld and gaining a foothold in the Human World, as their power and influence grew. With Satan ensuring their former father and siblings stayed out of their affairs, with his status as God's counterpart and equal.

Unfortunately, like all things, this Golden Age did not last forever.

As time passed, Lucifer, Beelzebub, Leviathan, and Asmodeus started to become greedy and ambitious, with the four desiring more than simply being Generals under Satan's command. Soon leading to them betraying Satan, but despite their combined power they were still no match for him. Forcing the four to seal Satan away, along with Belphegor and Mammon, who had remained loyal to the Demon King.

The four betrayers then turning their attention to Lilith. Who, while a powerful Devil in her own right, was eventually overwhelmed as she was defiled and broken by the usurpers. Before she was murdered after giving birth to Lucifer's son, Rizevim, with her body being hidden away in the deepest depths of the Underworld.

With their coup having been a success, the four traitors had then begun removing all traces of Satan's existence, along with their origin as Angels and later Fallen Angels. Ensuring that all Devils believed they were the original leaders of the Underworld, with Lucifer as their Creator. Something that the Grigori and Heaven were all too eager to participate in as well, since none of them wished to see Satan ever return. Whether it was out of fear of his power and wrath being directed at them or seeing him as a stain on creation.

However, unknown to the Three Factions, this action had served as the catalyst for their own downfall. With the Devils, Grigori, and Heaven being crippled for centuries to come.

As without the presence of the Father and Mother of all Devils, God became emboldened to finally rid of the world of the blemish, that the Fallen Angels and Devils presented to his legacy. All while Lucifer, Beelzebub, Leviathan and Asmodeus wished to destroyed the World and recreate it as a new World of Devils. Giving rise to the Great War between the Three Factions, with it only ending after the death of Lucifer, Beelzebub, Leviathan, Asmodeus, and God.

As well as the rise of Trihexa, the final child of Lilith. Having been born from her defiled body, while seeking vengeance for its mother, unleashing untold destruction onto the world.

With the Devils soon entering a Civil War, not long after, while being divided between the Old Satan Faction and the New Satan Faction. Leading to the banishment of the surviving children of Lucifer, Beelzebub, Leviathan, and Asmodeus, along with their followers. While giving rise to the New Satan Faction and government within the Underworld, one which has been in power since the end of the Civil War.

With there now being a sense of peace within the Three Factions, with generations of Devils and Fallen Angels being born. While Satan himself had faded away from the minds of those who remembered his existence. But despite how all knowledge of him was suppressed and stricken from history, this was not the last of the Serpent.

As with the death of his betrayers, there was a moment of weakness within the seal that kept Satan trapped, allowing him to expel his essence. Where upon his temporary release, he encountered and impregnated a human woman by the name of Kushina Uzumaki. Knowing this one action will lead to his inevitable return, through the power of his son, Naruto Uzumaki. The Adversary, Destroyer of Kings, Father of Lies, Lord of Darkness, and Spawn of Satan. But will be known by all, for his true title.

The Anti-Christ.

*Kuoh*

Rias Gremory was confused, annoyed, irritated, and exhausted.

In the two years since she and her Peerage had moved to Kuoh Town, where she has observed all the citizens of the city. Watching the humans go about their daily lives, along with her fellow students at Kuoh Academy. And one thing that Rias has learned was that everyone, no matter who they were, had some type of fault.

Workers who lied about the products they sold or were bribed to do so, spouses cheating behind each other's backs, students cheating on tests and homework, or simply perving on the female students. Ultimately, Rias knew everyone had at least one fault, sometimes more than one. Maybe they didn't know it, but every person had at least one. It even got to the point, where Rias made a game about it in her head, to see how long it takes her to figure out any one person's fault, or faults. The more she played it, the easier it became for her to see one's faults, that it soon became boring for the Gremory Heiress.

That is until one single person showed up.

Naruto Uzumaki.

With his snow white hair, pale skin, icy blue eyes, and unique whisker-like marks on his cheeks, Rias would admit that he was rather handsome, almost inhumanly so. But outside of his physical appeal, everything else about the boy has been the cause of Rias's current mood.

She just couldn't figure him out!

At first, Rias didn't give Naruto much thought when he transferred to Kuoh Academy, believing he must be some kind of troublemaker with his appearance, which Rias was partly right about. As despite being a year behind her, she was well aware that Naruto didn't pay attention in class, even falling asleep in the middle of it sometimes. He would even not attend classes, nor show up at school, most of the time.

The reason why she knew about this, was because Rias had heard her friend, Sona Sitri, go on hour long rants about Naruto's behavior, on numerous occasions. Along with how he ignored all her orders to improve himself and actually attend classes and show up to the academy.

This didn't really surprise or get Rias's interest, figuring Naruto was just more open about his faults than most people. What did surprise and intrigue the redhead, was despite his absence, Naruto was somehow still one of the top students at Kuoh Academy.

The knowledge being what made Rias begin to pay more attention to Naruto, starting to suspect there might be more to him than meets the eye.

She observed him during the day at Kuoh, outside of classes, while finding out that he was actually quite charismatic, despite his delinquent-esque traits. Given how he was seen interacting and eating lunch with a variety of students, such as Murayama and Katase for example. Which lead to her finding out that he also attended the Kendo Club as an unofficial member and proved to be very skilled with a sword.

Though Rias was shocked when she witnessed something completely unexpected.

While Rias didn't know much about Naruto, outside of the basics, she always figured he was a laidback type of person. Who easily became friends with others, due to his kind and charismatic personality, despite how he acted like a delinquent at times. Only for that theory to be thrown out the window, when the Gremory Heiress had witnessed Naruto beat the hell out of some boys, he caught peeking into the Girls' Locker Room.

And she doesn't mean just a regular beating, one would give to perverts that are caught peeking; Rias had seen them actually be taken away in an ambulance, after they were found. Naruto having tied their unconscious bodies to the academy gates, with no one knowing it was him. This making Rias realize that there was more to Naruto, a side of him that no one was aware of. One that he was able to hide from everyone so easily, that made Rias certain, that if she told anyone of what she saw. They would no doubt accuse her of lying and claim that she was making it up, despite her status as one of Kuoh Academy's Great Ladies.

Rias would admit, she was a little intimidated, even fearful, at having seen how easily Naruto could beat someone into unconsciousness, possibly even cripple them if he could get away with it. Though at the same time, her Devil instincts also found such a brutal display rather arousing.

Afterwards, Rias began following Naruto outside of school, and when she couldn't, she had her Familiar watching him. Learning that Naruto lived by himself since he was fourteen, with his foster parents working overseas. While his record showed that his mother died giving birth, but there was no record of his father or any mention of who he is, not even a name.

He lived in a house, that resided in the forest, near a lake. One that was recently built, with it being filled with all the basic necessities, such as plumbing, electricity and Wi-Fi. Which would explain why there's barely any official record of Naruto's house. With Rias knowing that Naruto must have used his nature to convince others to help him install all the basic modern needs, that his house would require. Something that normally wouldn't have been easy to accomplish.

This lead to Rias discovering Naruto's fondness of gardening, where he grew various plants, fruits and vegetables. With the produce that he grew showing to not only look more beautiful than regular fruits and vegetables, but were also far more long lasting and nutritious, as well. Which made Rias realize that Naruto probably grew all these fruits and vegetables as a means to not only save money. But also because he got better nutrients from them, than the Fruits and Vegetables that were sold in stores.

Along with learning that Naruto is also very good at handling and taking care of animals, along with having a few pets back at his house. With his most noticeable pet being a fox, that he named Kurama.

Both of which reaffirmed the kind and caring side of Naruto, that Rias had initially thought was just a mask to hide the brutal and sadistic side of him. That Rias had assumed was Naruto's true nature.

Along with finding out that he spent most of his free time from work and school, either at home, the park, the arcade, the bookstore, or the library, with the latter two being a surprise. With Rias learning that Naruto is actually a bookworm and enjoyed reading. Along with how he took several classes on Mixed Martial Arts and Close Quarters Combat. While also showing that Naruto is also an avid otaku and gamer. From all the times he purchased or rented manga and light novels during his trips to the bookstore and library, along with his time in the arcade and the various gaming systems that he had at his house.

And that's not counting his collection of various anime and figurines.

As the more time passed, Rias learned more and more about Naruto's life, hobbies, and interests. Which is to say, she's learned nothing that she didn't already know!

It has caused Rias to have many sleepless nights and unending frustration, that for all she knows about Naruto, she still didn't know who Naruto was. Since everything about him just seemed to be one mystery after another, in figuring out who he is as a person.

She had also tried finding out if Naruto was a supernatural being or possessed a Sacred Gear, only to find he was completely human and had no Sacred Gear within him. But surprisingly, he seemed to have some kind of…energy within him, but not anything Rias was familiar with. And learning he seemingly possessed enhanced strength, speed, durability, and senses, far above what any human should have. This only further adding to the mystery of Naruto Uzumaki.

'Who are you?' Rias thought, while looking out a window, watching as Naruto left the academy to return home.

Rias wasn't sure what it was that drew her to him or made her want to solve the mystery surrounding who he was. But whatever it was, the redhead swore she would find the answers, no matter what.

So, what did you think, good. Yep we get some backstory on the true history of the Three Factions and the existence of Satan, the Original Devil and King of the Underworld, along with Demon Queen Lilith. Both of whom turned Lucifer and his followers from Fallen Angels into Devils, leading to a Golden Age for the Underworld, only for Lucifer, Beelzebub, Leviathan, and Asmodeus to reach too high and betray Satan, sealing him, Belphegor, and Mammon away while defiling and breaking Lilith before killing her. This only leading to their inevitable deaths in the Great War along with God's death and the birth of Trihexa. All while Satan wasn't as gone as everyone liked to believe, with his return now ensured with the birth of his son, the Anti-Christ. Then we see things from Rias's perspective and how she sees Naruto and what he's like, with everything about him being a mystery for the Gremory Heiress, one she's determined to solve. So, review if you liked go away if you didn't.

Storm out