Disclaimer: I don't own Fairy Tail or Naruto at all.

"Natsu" Normal Speech.

'Natsu' Normal Thought.

"Satan Soru" Jutsu/Power/Technique.

"Dragon" Demonic being Speech.

'Dragon' Demonic being Thoughts.

{10:25 A.M, Magnolia, Fairy Tail Guild Hall, X778, Monday, November 10}-Time, Place, Year, Location, Day, Date

[..2 Days Later...] Timeskip

*Flashback Magic Activate* Flashbacks

'Bastard' Flashback Thought

-Clang- Sound effects

Fairy Tail's Demon King

Chapter 1: Ultear's Death and Magic Awakening

{8:00 A.M, Land of Isvan, Ur and Naruto's House, X771, December 21, Tuesday}

A small boy of six years old stood outside of his house in snow with a sad expression on his face. The boy had short spiky dark purple hair and black eyes. His skin was pale, and he had a frown on his face. He was a brown coat with black pants and shoes. He was seriously worried about his mother, Ur Milkovich.

It has been a day since she return from the Bureau of Magical Development, where she took his older sister Ultear Milkovich to be cure of her vast magic power, that was slowly killing her. She returns with news that Ultear was dead killed by her magic. Tears rolled down his cheek as he thought about his deceased sister as he choked up a sob.

'Ultear I miss you,' The boy thought as stared at the sky. 'I miss you so much, Ultear-nee.'

His mother spend last night crying her self to sleep from her loss. He was seriously at a loss at what to do now. He had to get some fresh air when he woke up. The boy sighed as anger boiled up inside him. He was furious at those incompetent bastard, who couldn't even save his sister at all. Like that was there job.

"Damn those bastards!" The boy snarled angrily. Unknown to the boy, he was covered in a black energy aura as he flared his magic power. Let was like a dam was broken as dense, magic energy surrounded Naruto.

{Inside the House, Ur's Room}

A woman was sleeping in her bed. She was a woman of average height with a slim, curvaceous figure. Her irises were black and she kept her dark purple hair at chin length. Her hair was normally quite unkempt, cascading down the sides of her face and covering her ears. Only a few strands of her hair hung down her temple, some falling between her eyes. There were tear stained all over her face. The woman suddenly gasped as she quickly woke from the energy.

'Ur think where is that magic power coming from,' She thought as she pushed the covers of her bed off her, revealing she was in nothing but a green bra coupled with a pair of green underpants. Both undergarments had lime upper borders with a pattern of dark triangles running along below them. 'Where is it coming from?.'

Ur scanned the room, looking for the source. A horrified expression appeared on her face when she couldn't find her only child Naruto.

"Naruto! Where are you." The frantic mother yelled worriedly. She was concerned and feeling overprotective after Ultear.

"I better find him." Ur said as she got up and started to get dressed. Ur attire was light clothing for cold weather. She wore a short, tan jacket with a dark brown collar and cuff and two breast pockets. The pockets could be closed by buttoning the small flaps above them to their front. She left her jacket open to reveal a maroon tube top below it, partially exposing her midriff. She wore a pair of black jeans and a belt with a scaly design and metal buckle. Her outfit was completed by a pair of simple brown shoes.

Ur made her way towards the interior of her house. The living room was empty, so he had to be outside. She made her way outside in the snow.

{Outside}

Naruto stood there with black energy coming off of him in waves. His magic power was making the snow swirl around him, due to his rage. His black eyes were glowing with magic.

''Naruto" Ur said sternly. Naruto jumped up surprised, and turned a rounded to see his worried mother. His magic power disappearing.

"Mom you're up," Naruto said surprised as he thought she was still asleep. "I thought you were still asleep."

"I just woke up, honey,'' she told her son softly as her voice was a little stiff from her crying last night. Ur narrowed her eyes at her son. "What are you doing out here?"

"I need some fresh air after last night." He explained to his mother, who's stern expression turned gentle. She understood that her son still missed his sister. Naruto and Ultear were extremely close after all.

"I got it," She said gently as she stared at her boy. "But let me know next time, Naruto. Because I was so worried when I could find you understand." Ur said emotionally. Naruto softened as he knew she was still hurting from loss of Ultear.

Naruto was about to answer his mother, when there stomachs started rumble loudly. "I'm getting hungry, so mom. How about some breakfast?" He asked, causing Ur to chuckle as they made there way inside there house.

"One more thing Naruto"

"Yeah"

"When need to start your magic training soon, because you have a lot that you need to control. Understand" She said seriously as she was not going to lose her last child. Not after Ultear.

"You got it mom." Naruto grinned at her in response.

[..2 Days Later...]

{10:00 A.M, Land of Isvan, Town of Bifrost (1), X771, December 23, Thursday}

"So, mom why are we here?" he asked her curiously as he walked through town. They were in Bifrost for something after all.

"We need jewels for Groceries as we are nearly out of food. So, I am taking a high paying demon killing quest for about 3 million jewels, and you are coming with me, Naruto." Said Ur calmly to her son. Naruto had a surprised and excited expression at his mother's decision to bring him along.

"Why?" He asked. Ur sighed before answering her boy.

"I want to make sure that nothing happens to you why I am away. You will be fine If I have my eye on you." Ur said protectively. (2)

Naruto rolled his eyes at her response. This was one of the side effects of Ultear's death that he had to deal with now that she was dead. His mother was becoming overprotective.

"Now there are rules to this, Naruto." Ur said sternly towards her son. She wanted to make sure nothing happened to him, while he was with her on her job.

:Rule number one, I do the fighting understand." Ur said loudly, making Naruto nod in understanding.

"Rule two, do what i say when I say it," Ur said sternly at him. :Understood Naruto."

"Yes, Mom."

"Good." Ur smiled.

"Here we are," Ur said stopping in front of a green two-story house. A tall man in his 30's was standing in front of it. He had black hair and green eyes. He was wearing a green shirt with blue jeans and black sneakers. "Mr. Mayor?" The mayor smiled at the woman.

"Ah, Ur you are here in response to the job I put how I take it, then." The mayor said calmly.

"Let's get down to business, then."

"In the forest, north of here was fifteen demons. I want you to eliminate them for me, Ur." The mayor explained as Ur nodded.

"I understand, Jason." Ur said calmly as Naruto began to look bored with what was happening. He was wondering when the action was going to start.

"Now do you know anything about what they look like or there attack and defense capabilities at all." Ur questioned the mayor, Jason. Ur was preparing for the mission, so she knew what Aisu Meiku (Ice Make) spell to use on the demons.

"My guards have said that they are strong enough to rip a man apart, and are fast," Jason told Ur, who nods. "The demons are capable of firing blades from the hands and could manipulation fire that is what my men told me, Ur."

"Now the demons are a little taller than the average human. They have red eyes and black skin. There hands and feet are claws." Jason described for Ur, who looked in deep thought on how to deal with this.

'Now how to I proceed with this' Ur thought as she grabbed her chin in deep thought.

:Mom" Naruto said shaking her. Ur jumped startled as she turned to her six year old, who stared at his mother in a deadpan.

"Yes, Naruto?"

"Jason's calling you?''

"Yeah, Jason" She turned her attention back to him.

"One more thing, there is a powerful demon, who is there leader of the demons, Ur.''

Ur's eyes widen in shock at this new. A serious expression was on her face.

"How strong Jason?" Ur demanded him. Jason sighed before answering his friend.

"My report from yester day was that it was a powerful demon. The demon could use Yami Maho (Darkness Magic), Mizu Kei Kakushu Maho (Water Magic), and Kaminari Kei Kakushu Maho (Lightning Magic). The demon could also fly." Jason said seriously as Ur sighed.

'This will not be an easy one, it seems' Ur thought gravely.

"This demon have a name, Jason" She asked, fishing for info on her foe.

"Yeah, it does."

"What is it, then. Jason?"

"The demons name is Supāda (Sparda)(3)" Jason said.

"What's this demon look like, exactly?" She asked.

"My report said that is demon is a slightly-larger-than-human-sized, vaguely insectoid demon with clawed hands, a scaly hide, a pair of downward facing ram horns, chiropteran wings with beetle-like wings underneath, hooves for feet, and reptilian spines protruding from his back. Parts of his body appeared to be made of grey scales with accents of red and purple. He also had gold veins on his hands and arms, chest, shoulders and back, a red diamond eye shaped gem in the center of his forehead, and skull-shaped gold knees and elbow guards with small horns." Jason described for Ur.

Naruto looked bored and looked around the street as the boy pulled at his long-sleeve winter coat. He a black shirt with blue jeans and white snow boots, that was his outfit today. He grinned as he remembered his Ice-Make lessons yestorday.

*Flashback Magic Activate*

"Naruto wake up!" Ur said cheerful as she stared at her sleeping son. He was dead to the world.

"Piss off, bloodly, mom," Naruto mutters as he tightened his covers. "Let me sleep for 5 more minutes."

Ur narrowed her eyes at his language before a miscievous smiled appeared on her face.

Ur took a step back as she slamed her left fist on her right hand as she got in her stance as the woman concentrated.

"Aisu Meiku: Omu! (Ice Make: Parrot)" Ur cried thrusting her hand at her sleeping son, as a blue magic seal flashed in front of her. Out of the seal was small parrots made of ice that flew to the unware Naruto.

Naruto cried out as the ice birds pecked at him.

"Cold!" Naruto yelled as Ur laughed.

"Mom not cool!" the boy cried.

"Why, mom," Naruto moaned at her, Ur just smirked. "What do you want." the boy groaned.

"Meet me out side for your magic training Naruto. I will teach how to control it. Also I'm going to teach Kori no Maho (Ice Magic), and the magic I created Aisu Meiku (Ice Make)(4)." Ur explained as Naruto nods.

He just noticed as his eyebrows started to twitch in annoyance. "Why are you in your bra and panties, mom!" He yelled loudly.

"Well, Naruto I'm going to train in them of course. And you are going to train in your boxers too." She smiled at him as Naruto looked dumbfounded.

"What!"

"I will meet you outside" Ur made her way outside, causally ignoring the freezing weather.

'This is going to suck,' Naruto thought as he put on a pair of black and purple boxers. 'I just know it.'

{8:00 A.M, Land of Isvan, Outside of Ur and Naruto's House, X771, December 22, Wesuday}

Naruto shivered as he made his way outside.

"It's cold." He shivered.

"All right, Naruto let's start." Ur order her son, who nods.

Ur got in her Ice Make stance with one palm open and the other hand in a fist lying on top of the palmed hand.

"Naruto copy me." She said as Naruto got in a indentical stance to that of his mother.

"Keep the stance, Naruto." She said.

"Now move to the right side."

Naruto moved his hands to his right side still in the stance, as he waited for orders. He sighed as he stared at his mother.

"Left side now!" She ordered. Naruto moved to the right side now.

"I'm going to show you a spell now after I show you. Iwant you to try the spell. Understand." Ur explained to her son, who nods.

Ur once again stood into her stance "Aisu Meiku: Nakkuru!" (Ice Make: Knuckles) She threw several magic spheres right beneath the tree, creating a large glowing circle underneath treewhich turned into several large ice fists that shot towards tree. All the ice fists made contact with the target simultaneously as they slammed into tree's body and sent the treecrashing through multiple trees.

"Now you try!"

"Aisu Meiku: Nakkuru!" He threw several magic spheres right beneath the next tree, creating a large glowing circle underneath treewhich turned into one large ice fist that shot towards tree. The tree was destroyed.

Ur's eyes widen at the spell, she was dumbfounded. He managed to use the spell perfectly on his first try.

[..2 Hours Later...]

"Now try a spell on your own, Naruto" She said.

Naruto got in his stance again.

"Aisu Meiku: Ken (Ice Make: Sword)!" He cried as his magic seal appeared in his hand as a sword made of ice appeared in his right hand. Naruto smiled proudly.

"Well Done, Naruto!" Ur said proud of her son.

"Now Naruto, I'm going to fire Lances at you. I want you to create a shield. Understand son." She said as he nod. Both went into there stance.

Ur thrust her hands out and cried out "Aisu Meiku: Ransa! (Ice Make: Lance)" Ur fired several curved lances of ice from her seal at Naruto.

"Aisu Meiku: Shirudo! (Ice Make: Shield)" He shouted and large sunflower-like shield made of ice appeared in front of Naruto in an instant. The lances slammed into the shield without making any damage to it as Naruto stood behind his creation.

"Not bad." Ur noted.

[..2 Hours Later...]

Naruto and Ur were sparing with ice swords. Ur spun around an swung at her son in a wide arc as Naruto narrowed his eyes.

Naruto quickly spun the blade in his hand until it was facing downways as he blocked the attack.

-Clang!-

Naruto quickly threw the sword to his left hand and struck his right hand out and cried out: "Aisu Meiku:Tenken! (Ice Make: Dagger)" A curved dagger of ice appeared in Naruto's right, which he held in a reversal grip.

Naruto slashed with his sword, hitting her sword, and using his weight to push her off balance a little. Naruto thrusted his right arm at her ribs, trying to stab her with his dagger.

Ur simple twirled to the left dodging the stab, before she brought her hand on his wrist. She tighten her grip on him, forcing him to let go of the dagger. Ur catch with her right hand.

She smirked.

Ur kicked the ice sword out of Naruto's hand, making the blade stab itself into the ground five feet away. Ur made her move.

Ur spun around her son, who stopped when he felt cold on his spine and juglar. Ur held the sword with her left hand at his throat and the dagger in her right hand at the back of his spine.

"I win, Naruto!"

"We are done for the day" She said, removing the weapons from her son, who pouts.

"It's lunch time anyway son" She said walking into the house. Naruto followed his mother.

"I will beat you one day, Mom" Naruto swore determined to beat his powerful mother. She grinned at his determination.

"I hope you do then Naruto!"

Naruto made his way into his house, with a promise to become stronger than his mother.

*Flashback Magic Deactivate*

Ur stared her son a little annoyed as she snapped her fingers in front him lously, which made him jump startled. She was wondering what was going on with him.

"Sorry Mom" He apologized to her as she sighed.

"Anyway let's go" Ur said making there way to the forest. Naruto rolled his eyes as he followed her.

{Forest}

'This place is pretty creepy' Naruto thought as his mother stopped staring at the humanoid demons. The demons had claws for feet and hands, black skin, and red eyes.

"There they are" Ur said creating a ice sword.

"better get to work" Ur said before releasing a battle cry as she charged the demons.

She stabbed one in the heart, before decapitating the demon, sending its head flying and spraying Ur in black blood. Naruto tembled at the blood a little.

'That's one'

Ur out of the corner of her eye saw a large ball of fire heading her way and a demon behind Naruto.

"Aisu Meiku: Shirudo!"

Her Shirudo stopped the fire complete as the law of physics caused a smoke screen from the fire hitting her ice. Ur held out her right hand.

"Aisu Meiku: Nagenaifu! (Ice Make: Throwing Knife)" a small throwing knife made of ice appeared in her heand. Ur threw it with the blade hitting its mark, the throat of a demon trying to get her son, killing it. Blood was sprayed over Naruto, who groaned.

Ur quickly spun in a fluent motion cutting off the heads of 3 demons, coating her sword with thier blood as she smirked. Ur tossed her blood soaked sword to her right hand and slammed her left hand on the ground crying out.

"Aisu Meiku: Supaiku! (Ice Make: Spikes)" A magic circle appeared under five demons as five large ice spikes appeared from the ground, impaling the demons, killing them.

Ur ducked under punch of the demon before stabbing him in the heart and cutting off his head. The four remaining charged at Ur, who cut off the head of one of them. Before decapitating two demons. Ur threw her sword at the head of the last demon, impaling him in the brain, killing him. She was soaked in black blood from the fight.

"All done." Ur said cheerfully, as Naruto smiled.

Clapping could be heard as Ur narrowed her eyes.

"Well done." A deep booming voice said. A thump appeared behind the Ice Make Mage, who turned around to face the person.

It was a demon. It was slightly-larger-than-human-sized, vaguely insectoid demon with clawed hands, a scaly hide, a pair of downward facing ram horns, chiropteran wings with beetle-like wings underneath, hooves for feet, and reptilian spines protruding from his back. Parts of his body appeared to be made of grey scales with accents of red and purple. He also had gold veins on his hands and arms, chest, shoulders and back, a red diamond eye shaped gem in the center of his forehead, and skull-shaped gold knees and elbow guards with small horns.

"Who are you?" Ur asked with narrowed eyes.

"Call me Supāda (Sparda)" He interduced himself to her.

"I'm going to kill you" Supada said firing a blast of darkness at Ur.

Ur created created a shield to block before making her next move.

"Aisu Meiku: Raino! (Ice Make: Rhino)"

A large rhino made of ice charged at the Supada, who scoffed.

"I don't think, so."

"Boruto!" Supada blasted the charging ice rhino with a large bolt of lightning, destroying it.

"Kori no Maho: Soryu Bofusetsu! (Ice Magic: Twin Dragon Blizzard)" Two large dragons of ice with red eyes charged at Supada, and hit him,injuring him and sending the demon flying. Supada growled.

Supada instantly appeared in front of Ur, whose eyes widen. She quickly created a disk shield of ice on her arm, blocking the punch. Which shattered the shield and sent her flying, making her groan.

"You filthy whore!" The injuried demon snarled as Ur quickly created a spear of ice and hurled it at him, forcing Supada to dodge to the left.

"Aisu Meiku: Corudo Ekusukariba! (Ice Make: Cold Excalibur)" Ur cried as she quickly created a massive great-sword, which she held in her hands. As Supada walked towards her. Before the demon could react, Ur slashed him down the chest, leaving a deep gash on his chest, spraying his green blood everywhere as Supada yelled in pain. Ur quickly did a harsh side kick to gash, causing Supada to scream in pain, and he was sent flying.

"I'm not done" Ur snarled as she kicked off the tree's high into the air and cried out.

"Aisu Meiku Ogi: Kotta Ha! (Ice Make Secret Art: Frozen Blade)" Ur stabbed her great sword into the ground, causing a massive magic circle to appear under Supada, who just got up. A massive blade of ice erupted from the ground and impaled Supada through the chest, making screaming in agony. The blade shattered as Supada had a furious expression on his face.

"It's see how you like this you bitch!" He growled as he growled with purple demonic power.

"Akuma Ogi: Arashi Bakufu! (Demon's Secret Art: Storm Blast)"Supada cried creating a large black magic seal to appear in front of him.

"Dakuu~Ota! (Dark Water)" A glowing kanji for Dark Water (ダークウォーター) appeared on the left side of the seal.

"Dakuraitoningu (Dark Lightning)" A glowing kanji for Dark Lightning (ダークライトニング) appeared on the right side of the seal. The seal is now glowing red.

"Ketsugo Suru! (Combine)" Supada growled as he waved his glowing red claws, making the seal turn white. A massive stream of black water, electrified by red lightning was fired from the seal at neck breaking speed. Ur screamed in agony as she was hit by the electrified water. Ur trashed around from the pain, as Supada.

"Mom" Naruto cried out worriedly, making Supada smirk. Ur glared at him weakly as she channeled all of her magic into this last spell. Blue energy surround Ur like a aura as she snarled.

"Take this, you bastard. My strongest ice magic spell!"

"Kori no Maho Ogi: Kori no Kaminoikari! (Ice Magic's Secret Art: Ice God Wrath)" Ur cried creating a massive blue magic circle above Supada. A massive beam of ice energy was fired from it at sub-zero. Supada screamed from the sudden sub-zero tempatures before the beam exploded destroying the surrounding area. Supada screamed in extreme pain. The light clear, showing a barely alive Supada.

"That was all I had" Ur said weakly.

"Mom" Naruto cried making her way towards his mother, worried.

"Are you all right?"

"I'm fine, sweetheart" Ur said. A cough was heard, making both turn aroudn to see Supada still alive.

"You bastard" Naruto growled walking towards him.

"Naruto what are you doing!" Ur cried at her son, who ignored her.

"Boy"

The angered Naruto touched Supada on the chest. This created a massive spell circle to appear in the sky. Naruto and Supada began to scream as Naruto, unknowingly absorbed Supada and took his soul.

Ur stared worriedly at them. The light cleared to reveal only Naruto, but he was changed. His entire right arm, except was covered in green scales, while his hand was now a green claw. He had the arm of a demon now.

"Mom, why is my arm a demons" He demanded worriedly as she stared intrigued and thought to why.

'That was Teiku Oba Maho (Take Over Magic), i'm sure of it. So, this has to mean. Naruto natural magic is Take Over Magic then. It's Satan Soru (Satan Soul), taking over demons.' Ur thought to herself as she absorbed some etherano from the air to refil her magical container. She recognized the magic from her studies.

"You are a natural take over mage, you have the satan soul, taing over demons." She explained to her son. Ur weakly held her right hand up and said. "Kanso (Requip)" In a flash of icy blue light, Ur held a large roll of bandages.

"Here cover that arm of your, so people don't see it." Ur said, making him nod. Naruto started wrapped and covering hid demonic arm up.

Ur grunts as she pulled her self up as she stumbled as she stood up.

"Let's get back to town for our reward." She said, making her way to town. Naruto followed.

{Bifrost Town, Jason house}

"You look terrible, Ur." Jason said.

"I'm hurt, of course I look, dumbass." She said sarcastically making him wince.

"Here's your reward. Two million jewels." Jason said tossing the bag flowing with money.

"See you. I'm tired and want to go home" Ur said as Naruto quietly followed.

{Outside}

"You need to control your magic to transform your arm back to normal, Naruto." Ur said as he nodded.

[...One Year Later...]

{8:25 P.M, Land of Isvan, Ur and Naruto's House, X772, Monday, November 10}

It's been a whole year since that fight with Supada. And alot of things of changed since then, He learned how to control his take over and learned more about it. He could full transform yet, but he partially transform.

-Knock-

Naruto sighed as he got up.

-Knock-

"I'm coming"

Naruto opened the door to reveal a boy around the age 7, his age. He had blue-silver hair and black eyes. He was wearing winter clothes.

"Naruto"

Ur made her way to Naruto and the mysterous boy. ur noticed the boy.

"Naruto whos this?"

"Is this the home of Ur Milkovich?" He asked, earning a look from Naruto and Ur.

"Yes, who are you?" She asked as he nods.

"My name is Lyon Vastia. And I want to learn Magic from you."

"You better come in Lyon, so we can talk" Ur said as Lyon and closed the door.

Chapter One Finished.

1: The town of Bifrost is a name I gave the town Ur took Lyon and Gray during there training.

2. Ur just lost her daughter so, of course she is going to be an overprotective mother.

3: Yes the powerful demon is Sparda from devil may cry, so Naruto got have a soul to unlock satan soul.

4: I don;t know who created Ice Make in canon, so in this story Ur created it. I mean she did teach two people ice make.

Spells I created.

Aisu Meiku Ogi: Kotta Ha(Ice Make Secret Art: Frozen Blade)

Kori no Maho Ogi: Kori no Kaminoikari! (Ice Magic's Secret Art: Ice God Wrath)