Back with another story, i got this idea after I remembered reading a fic called 'Rise Of A Heavenly Demon' and decided to do something similar

I will be continuing my other story Akagami No Naruto along side this so don't worry if you think that'll be cancelled

Anyway, I don't own naruto or One Piece

"Slay the demon!" yelled a voice, Naruto couldn't make it out who spoke the words, but he could hear the hatred in his voice, he was currently in a huge predicament, he was tied to a cross, with a swarm of civilians and shinobi surrounding him with all kinds of weapons being thrown at him

"St-Stop it... please" mumbled Naruto

"Burn the demon" yelled another voice which caught his attention, he was dragged away from his thoughts as he was soaked with a liquid

'O-Oil' questioned naruto in his head before his eyes widened, 'Oh no'

He didn't have enough time to plead for mercy before a torch lit his cross on fire, he let loose an ear-piercing scream

The fire was burning at his skin, he didn't know why, but he, just wasn't dying, he couldn't, even a little bit, feel his life slipping away

"STOP IT!" he yelled in the flames as they grew larger and burnt at his skin as a huge wave of an unknown force was pushed throughout the crowd, knocking everyone Jonnin and under out.

Later

"He's going to be alright Hokage-sama" said a voice, "He is stable and will make it"

"I need to see him, I need to make sure he's alright" said a voice that Naruto recognised, it was the hokage

"Jiji" mumbled Naruto, it seemed to be loud enough for him to hear

"Naruto" said the Hokage as he rushed passed the doctor to his side, "Are you alright?"

"M-My eye... what's wrong with my eye" said Naruto as he was able to open one eye, but the other one just wouldn't co-operate

"I'm sorry Naruto, but the fire was too strong, it was able to burn your entire eye off" said the Hokage

"B-But what about... the rest of me feels fine, but my whole body was on fire" stated naruto, "How in the hell did I survive" his voice was raised to a yell

"I'm sorry Naruto, but I can't tell you that yet" said the Hokage, much to the 8 year olds anger

"WHY NOT!" yelled Naruto as he sat up to look the elderly man straight in the eye

"Because you're not ready yet!" half-yelled the Hokage, "You're not old enough to understand"

Naruto got up from his bed and looked straight at the doctor, "Am I clear to go"

"Y-yeah, we've ran all the checks on you" he said as he saw Naruto push passed him, he turned to the Hokage

"Oh Naruto... I hope you can forgive this old fool" he heard the hokage mumble

Elsewhere

Naruto just ran, he was angry, no, angry was a underestimation, he was furious, the Hokage had most likely saw what happened to him, so he should understand his anger, but he was mostly angry at the civilians, he wanted nothing more than them dead

"I-I'll kill them" he announced to himself, "I'll make sure they all feel the same pain I felt"

He ran into a small alley, but suddenly the floor collapsed under him, he caught a glimpse of some kind of trapdoor above him, he closed his eyes as he awaited the pain at the bottom of ground, and it was received, he slammed to the floor, being knocked unconscious

Later

"M-My head" groaned Naruto as he sat up, he slowly observed his surroundings, he was in a lit room that looked to be some kind of storage room

He noticed the important details, there was a wooden desk next to a door, the desk had a small chest on it, at the other side of the room there was a set of clothes, just casual clothes though which didn't really interest him, there was also a bookcase with plenty of books in it, and a dozen or two scrolls hung nearby

He first stood up and walked towards the desk with the chest on it, he also noticed there was a book with 'My letter' written on it, he opened the book first and was it only had a few pages, with very little writing on it

Dear Reader

My name is Donquixote Doflamingo, known to the world government as 'The Heavenly Demon', you have stumbled upon a secret vault I had made when I visited this world, don't know how I ended up here, or how I got back home, I am guessing it has something to do with the amount of conquerors haki that straw hat had released during the war.

Anyway, in the box I have left a present for you, inside is a devil fruit known as the string-string fruit, it allows you the ability to control strings at will, but cancels your ability to swim. I want you to eat it and accomplish your dreams of destruction

The trapdoor I had made was only allowed to be triggered by someone who wants nothing more than the death and destruction of living beings, once you eat the fruit, you will have access to the scrolls at the side which will instruct you in your devil fruit and haki

You will also have access to the door which will lead to a large bunker that you will be able to change to suit your needs

Anyway, good luck on destruction, my protégé

Naruto's eyes widened, then a small smirk appeared on his face as he reached to open the box. When he opened it he found a small fruit resembling an apple but was yellow with swirls all over it

He grinned as he took a large chunk out of it and immediately gagged on it, but he swallowed it after a minute. Once he had eaten it he walked over to the clothes hung in an open cupboard, it had a small note on it

These clothes are special, they are laced with my strongest threads, making them more durable than any armour, but as light as casual clothes, use them well, they are specially designed to fit the wearer no matter the size

He smiled again as he put them on, he now wears a black open cardigan with a white shirt under with the top few buttons undone and a pair of brown trousers along with a pair of black ninja sandals, and to top it off a pair of weirdly shaped red tinted sunglasses

He walked over to the bookcase and scrolls, 'I'll look at these tomorrow' he planned in his head

He walked to the door and opened it, he immediately saw what he expected, Doflamingo had said in his note that it would change to suit his needs, so this must be what he meant.

He looked around a while and found it had one bedroom, one kitchen, one bathroom, one living room and a dining area, the door from the storage room led directly into the living room.

"I'm going to have some fun" said Naruto with a huge grin

That's the first chapter down, hope you enjoyed

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