Summary: A second chance, it's something a man like Itachi Uchiha would never think about. Reborn into a new world and earns a new life, will he learn to forgive himself, or once again he sacrifices his own life to shoulder the entire world on his shoulder, for the sake of peace? [Devil born Itachi].

[(Mostly)One-side] Itachi x Harem.

This story is inspirited by The Sharingan of the Crimson Princess made by Arcreed which he taken down many months ago. I tried to contact him to get his permission for adoption, but after all this time, he still hasn't replied so I guess I will have to make my own version with what I can remember.

There'll be many similarities, but I will add my own touches in this as well.

"Itachi" Normal Speech.

'Itachi' Normal Thought.

"Sharingan" Jutsu/Power/Technique.

"Mangekyo Sharingan" Demonic/Dragon Speeches.

'Mangekyo Sharingan' Demonic/Dragon Thoughts.

Devil Sharingan

Chapter 2

"Itachi-kun! Dinner is ready!"

"Just a minute, Kaa-sama."

Itachi Uchida, formerly known as Itachi Uchiha said to his mother before turning back to the book he was reading, intending to finish it before going down to eat dinner. It had been two years since he was reborn, as the son of Ichirou Uchida and Fiona Uchida. Even though his new life was nothing like the past, Itachi could say that the past two years could be one of the happiest time of his life.

He loved Fugaku and Mikoto Uchiha, but they were born to duty as Shinobi of the Leaf, not to mention that he was born in the middle of the Third Shinobi World, so his childhood wasn't something that he could call pleasant. Ichirou and Fiona, meanwhile, raised him with love and great care, giving him everything that they thought was good for their first child.

In the past, he was an Uchiha and a future Shinobi, so he was raised differently than a normal child.

Then, he was raised like a normal child, in a normal environment, because Ichirou and Fiona were just two normal husband and wife, not some great and important Clan's heads like his past father and mother. There was no war, no battle, no deaths, no violent… Itachi also didn't have to focus too much on his training like he used to be. This was a life that he could never ask for, but always dreamed about.

However, a couple of weeks after he was born and when he was returned to his parents, Itachi realized that there was some major different between him and the person he used to be… it happened when he saw the sky, bearing the color of purple instead blue in the daytime. It was almost the same for the night but there was the moon, which he learned later that it was just a false one, there to made the night's darkness the same with before.

Not long after that, Itachi was completely shocked when he saw his father flew away with a pair of black bat-like wings

It didn't take him long to realize that he wasn't human, but something else… soon, he learnt that he was a devil.

So he waited for a few months, to the day he 'learnt' to read and speak. Itachi couldn't risk acting like an adult while he was simply an infant, so Itachi let himself growing normal at first, acting like a child his age, with childish and happy behaviors, but rarely cried. As a skilled Shinobi, acting wasn't that much of a trouble for Itachi, but in the past two years, those child-like acts were never entirely fakes, as he was truly happy with his life, and wanted to feel his new childhood to the fullest.

However, as soon as his parent learnt that their child wasn't a simple child, but showing many signs of a pure genius, Itachi got to work. His family wasn't filthy rich, but they found him a good teacher to teach him how to read when he was a year and three months old. Two months later, all the adults were completely shocked when Itachi could read the simple words frequently and a months after that, he could already read and memorize anything. Of course, Itachi could do more than that, but in order to not make his parent freak out, he decided to take it as slow as possible.

Itachi got to work, and learnt that he was member of a race called Devil, who lives in the Underworld. Itachi was the son of two pureblood, but low-class devils, both working as servants for the Gremory Household, one of the remaining Devil Clans of the 72 Pillars and one of the highest-ranking (ranking at Duke) and famous Devil families. His mother worked as a maid while his father was the head chef for them.

Itachi also learnt about their abilities, and secretly mastered them to the highest state possible for his age, such as flying. Compared to normal human, they have increased physical abilities, such as superhuman strength, endurance, with enhanced senses such as an increased hearing range and eyesight. A child his age should be physically stronger than an civilian child, and at the age of two Itachi was already physically as good as he was when he was about to enter the academy, as his new strength, senses allowed him to train in feats he weren't capable of doing at age 2.

Devil Faction was ruled by a group of strongest devils, called the Maou (Satan). There was currently four of them, with the last name of Lucifer, Leviathan, Beelzebub, and Asmodeus. However, they weren't the original four who wielded that last name.

At some point in the past, the four original Maou led the Devils Faction against God and the Angels in Heaven as well as Azazel and the Fallen Angels in the Great War. The original leaders, however, eventually died in the Great War after more than half of the 72 Pillars as well as a majority of the armies of Devils that serve the High-Class Devil Clans of the 72 Pillars were wiped out.

After that, a group of the descendants of the original Maou intended to carry on their legacy by gathering the strong supporters and finish what they ancestors started, starting the next Great War.

Their intention, however, were opposed by a certain group of Devils, the Anti-Maou Faction, who wanted to ensure the survival of the Devils as a species, thus disapproving of the continuation of the Great War.

This dissension eventually caused a civil war to break out between the Devils which ultimately lead to the defeat of the Original Maou' descendants. Following the defeat of the descendants who were forced to retreat to the back part of the Underworld, their names became titles for the new rulers of the Devils while the Original Maou became known as the Old Maou.

The current Maou are Sirzechs Lucifer, from the Gremory Clan, Serafall Leviathan of the Sitri Clan, Ajuka Beelzebub who came from the Astaroth Clan, and Falbium Asmodeus of the Glasya-Labolas clan. They're four Devils who were born with immense power, equivalent or superior to the original Four and were chosen for the Maou' positions despite not carrying the blood of the original Maou at all.

Soon after that, the Great War finally ended, but it left the Three Factions in a state of conflict.

However, due to a state of extreme exhaustion after the Great War and with all three factions losing their main forces, neither of the three sides wanted to continue battling. So while there was no peace between the factions, outright battles did not occur either. The Factions continued in this state with occasional conflicts between members who crossed paths for countless millennia.

That was the reason why even when he was living peacefully, Itachi still trained like a Shinobi.

Also, the human world was no longer what he remembered it to be.

That led to two theories that Itachi came up with a couple of months ago.

The first one, he was in the future… the era where technologies and advancements had taken over and the knowledge of Chakra was lost forever… How Itachi didn't know.

The second theory, however, was more believable. He was in another world, perhaps a parallel world completely separated from Elemental Nations, since the world he was living in called Earth and had a very detail history of its own written in books.

This also led to two more questions.

Which being powerful enough to bring him to this world and reborn into a baby? And for what reasons? Itachi believed that there was still much for him to learn, because as far as he could see and guess, there were only two beings had enough power and authority to do that.

"Itachi-kun, if you don't come out here for this instant I'm so going to ground you the entire with without any books for you to read!"

"Coming!" Itachi shot up from his chair and walked out of his room, closing the door behind him and headed to the dining room where his parents was waiting, with dinner already served on the table. While his father was the best of their family, his mother decided that she should do the cooking chores, cause she could cook really good as well. It was nine in the evening, the time for dinner because his parents' works at Gremory Residence was over at eight thirty.

"Good evening Kaa-sama, Tou-sama." Itachi greeted them with a smile before getting on his own chair at the dining table.

"I swear Itachi-kun, you're going to turn into a computer if you keep reading so much like that." His mother said as she put the dish down to the table and sat down next to her husband, Ichirou, who was also smiling at him.

"Cut him some slack, will you dear." Ichirou said. Surprisingly, Japanese people used the same language as the people of Elemental Nations. And his grandfather was a reincarnated devil who used to be a Japanese man, which made his father and then Itachi a half-Japanese too "Itachi is going to school soon, I think it's alright for him to get some prepares first. Am I right, Itachi?" the child nodded his head.

"Yes, father," Itachi said.

"Excuse me?" Fiona raised an eyebrow at her husband's words "But he is only two years old, it's too soon for him to think about school."

"Oh c'mon Fiona, our son is a genius, isn't he." Ichirou said with pride and Itachi couldn't help but make a small smile at that "Remember what his teacher said, a prodigy that..."

"But he is still a child."

"I don't want Itachi to waste his talents. Look at Rias-ojou sama, she already has a tutor to take care of…"

"Can we eat now?" Before a fight could break out, Itachi decided to speak up and stepped their conversation "I'm hungry." He gave a smile that any child would give their parents. Fiona smiled softly at him and gave Itachi his chopsticks, as they were going to have Japanese foods that day, but not before giving her the "I told you so' look.

He was a child just a child after all. If Itachi wanted to do something… more extreme and more mature, he would have to wait a few more years.

[Three years later…]

"Don't worry Tou-sama," Itachi nodded his head to his father, who was speaking to him through a communication magic circle "I found it." He said, looking at the white Chef hat with the crimson symbol of Gremory Household in his hand, which his father forgot him and went to work without it this morning.

"Alright Itachi, can you bring it to me? You know the way to Gremory Residence right?" it was actually hard to not know the way to Gremory Residence because he lived inside their territory, the area for their servants only a mile away from the place, and even from his home, he could see the rooftop of the mansion.

"Yes father, I will bring it to you right away."

"Be careful Itachi-kun, your mother would be so angry at me if something happened to you."

"Yes father." Itachi nodded his head and the magic circle disappeared. The five year old boy quickly ran to the door, sat down to put his shoes on and thought about his wings, which instantly appeared on his back and took off to the sky, as flying would be the fastest and also safest way to get there.

Gremory's known for their extraordinary affection for their servants, and as such, they did not discriminate themselves with their servants. In the society where the low-class served the higher-class people, for nameless devils like his parent, becoming their servants were like a dream come true. The Gremory Clan had a territory that was about the same size of Honshu in Japan, and also has a vast number of castles for its kin.

A very rich territory, it also had a developed industry.

When Sirzechs Gremory, the eldest child of the family became the Maou "Lucifer" and lost his right to become the Head of the Gremory Clan, it was Rias Gremory who had become the next head of the family. She was a year younger than him, a four-year-old princess who was born and raised with a silver spoon in her mouth.

Her father was Gremory and her mother was a member of Bael, the highest-ranking clan amongst the 72 Pillars and holds the rank of Great King, not to mention that her brother was the leader Maou. It was hard for Itachi to imagine if there was someone who would want to mess with a girl with a status and lineage like that.

It didn't take Itachi long to arrive at the gate of Gremory Residence. The young boy then lowered himself down and willed his wings to disappear, decided that he should walk by foot from that point.

"Hold," One of the guards said as he saw Itachi walking toward them "State your business, boy."

"My name is Itachi Uchida." Itachi said and the guard widened his eyes slightly "I'm here to give this to my father," the Sharingan prodigy pointed to the hat in hand "he and my mother work here."

"Oh, so you must be the son of Uchida-san." The guard nodded his head with a smile before opening the gate for him "You can come in. The kitchen is on the second floor, it's at the end of the hallway, there you will find steel doors next to two pictures of fruit and vegetables."

"Thank you." Itachi lowered his head respectfully and said gratefully before walking into the residence, took him some time to get the building.

In short, Gremory Residence was more impressive and incredible than any palace he had seen in his life, both life actually. It took him more than a few minutes to get to the second floor, because there were so many staircases and hallways inside, which going to lead to which he didn't know, but Itachi knew that he would be lost if he wasn't careful.

"Let go of me, Raiser!" When he got to the right hallways, a girl voice could be heard, and judging from the tone, she wasn't very happy "Why are you so mean to me!"

"I'm not being mean to you or anything Rias." It was the voice of a boy, probably not much older than him "And don't try to deny it, you like me, don't you?" Rias? As in Rias Gremory?… so he was about to see the princess his parents talked so much about then.

Itachi kept walking, but a single look was more than enough for him to memorize everything. There was a really cute girl with crimson hair and bright blue eyes, wearing a green sundress, standing with her back against a door, surrounded by a three boy, all of them a lot taller and older than her. The one with bright blonde hair, probably the leader, was standing right in front of Rias with his hand on the door, blocking her way of escaping.

"The fact that we're engaged doesn't mean that I have to like you, Raiser!" Rias said with an angry tone, as Itachi slowly approached them "Are you deaf or something? I will never marry you, not in a million year." The black haired boy walked slightly the right and grabbed some small rocks from one of a tree pot.

"How stubborn can you get Rias?" the blond boy, Raiser said as crossed his arms on her his chest, smirking arrogantly. Instead of stopping and doing something to save the little princess, Itachi walked pass them "I know that you don't like me, that's why I ask you to hang out with me. I'm sure that… OUCH!" Raiser cried out in surprise when he felt a sharp pain at the back of his head "Oi! Who throw that?" he shouted and saw no one but a boy with black hair, but he was already very far from them "Hey you! Stop right there."

Of course, Itachi stopped and turned around to face them, hiding the remaining rocks inside his father's hat.

"Yes, Raiser-sama?" Itachi said calmly, looking straight into Raiser's eyes. Rias meanwhile was looking at him curiously.

"Did you throw this rock?" Raiser asked as he picked the rock from the ground and pointed at it.

"I don't know what are you talking about Raiser-sama?" Itachi shook his head and moved his hands behind his, taking a rock into his hand "I would never dare to do that to the son of Phenex Household." He said before flicking the rock into the wall at his right with his thumb before doing the same with his left thumb, but to the wall at his left. The first rock hit the wall, then bounced up to the ceiling, to the table at his left and smashed into the second rock, changing direction but also broke into two piece because of the impact, heading up. Both pieces then smashed onto a chandeliers and shot down to Raiser's minions' heads, hitting them with such force that was nearly knocked down to the ground.

"What the hell?" They cried out in pain. Raiser turned his head to look at them in surprise, but right at that moment Itachi threw the last four rocks he had, one after another, making them hit each other rapidly on the air until one finally hit Raiser's head, again at the back of his head "OUCH! YOU!" Raiser roared and flared his eagle-like wings of fire out, glaring murderously at Itachi, who remained calm nonetheless. He was right, Raiser was from Phenex Household, the household blessed with fire magic and immortality of Phoenix.

Rias meanwhile, was gasping in surprise. What the unfamiliar black haired boy just did was completely out of her imagination. She couldn't see the rock, but see could see him throw them right after Raiser turned his head away.

"I don't know what are you talking about, Raiser-sama?" Itachi shook his head "From what I saw, you was hit at the back of your head. How can I throw a rock at the back of your head while I'm facing you?" Itachi asked, making Raiser widen his eyes at his logic.

"This is not over, you hear me?" Raiser said hatefully and ran away with his minions "I will talk to you later Rias" but not after he said that to the crimson haired heiress of Gremory Household.

"Spoiled brats," Itachi muttered before turning around to walk away.

"Hey wait!" Rias called out to him and grabbed his shoulder "I want to talk to you." She said to him.

"Yes, Rias-sama…?" Itachi asked and turned around to face her. She was shorter than him, must be because she was younger.

"What is your name?" Rias asked excitedly "I have never seen you around here before?"

"My name is Itachi Uchida, Rias-sama." Itachi said, "My parents work here as your servants, I'm here to give my father the hat he forgot at home this morning." He brought the hat up and showed it to Rias.

"Uchida? Your father is Ichirou Uchida-san?" Rias asked, her eyes sparked with excitement "He sneaks candies to me, and he can cook delicious meals too."

"I see…" Itachi nodded his head. So that was why his father always prepared a bag of candy before he went to work. Itachi loved sweets, so there was always a few bags of candy in his room, for him to eat while reading "Now, excuse me but I need to…"

"Wait Itachi-kun, thank for saving me from Raiser." Rias said, smiling cutely at him "Also, can you teach me to do that trick with the rocks?" she asked, doing some flicking action with her fingers "It's so cool!" Her eyes sparked again. Of course like any children, she would get excited after seeing cool tricks like that. Even his brother Sasuke asked Itachi to teach him after seeing it.

A smile then appeared on his face as Itachi then raised his hand, gesturing her to come closer, which she immediately did but when she was close enough…

POKE

He poked her gently on the forehead with his index and middle finger.

"Huh?" she asked in surprise while holding her forehead.

"Forgive me Rias-sama, but maybe next time." He smiled and turned around to walk away 'So that was Rias Gremory… she 's cute." Not being a pedophile or anything, because he was an adult in a child body, but Rias was really cute and even an adult had to admit that. She was definitely going to turn into a heartbreaker in the near future.

End of Chapter 2

Yagami's note: Sorry for the late chapter, because I was busy to update Fairy Guardian (and somewhat disappointed because of a number of feedbacks) but here it is, the second chapter for Devil Sharingan. I hope you like this chapter.

So, I hope you like the background for Itachi in this story. He is already a devil, so, of course, there's no point for him to become someone's servant just to be a devil, something that I would like to keep Itachi from in this story. Also, his family was working as servants for Gremory Residence, so it'll keep him in a close relationship with Rias, who he met in this chapter.

This story takes place several years before Cannon, around the time when Rias was only three years old.

I won't make Itachi a wall of brick like how Arcreed did in his story, I'm sure that the only reason for Itachi to stop himself from falling in love was because how his life turned out, and the person he later became. Itachi did placed Izumi in an extremely powerful Tsukuyomi where she lived the entirety of her life with him after all, giving her a peaceful death unlike many other who he killed with his own hands. It show that he does have some feelings for her, aka know the feeling of love and all.

He's capable of falling in love in this story, but of course, the idea of Harem is currently out of the question for a man like Itachi, unlike a certain pervert who wish to become the harem king.

I will keep the harem the same as TSOTCP, and of course the poking trick with Rias too.

I will keep Itachi's childhood like this up for around ten or so chapters, building up the relationships and all before cannon.

Oh, a reminder is that Itachi won't have the Eternal Mangekyo Sharingan, for future purposes and all, but he will keep his skills, intelligent and learn a lot more like TSOTCP of Arcreed. He will have to reawaken the Sharingan and later the Mangekyo, though. But you already know how powerful and dangerous he is even without them.

Itachi and Rias' relationship will be developed from the next chapter. Sona and Serafall will make their appearance there as well

READ and REVIEW (please REVIEW! The more you reviews the faster I will deliver new chapters)

Ja ne!