Naruto" Normal Speech

'Zeref' People's thoughts

"Acnologia" Summons/Gods/Monsters/Other beings speech

'Kurama'Summons/Gods/Monsters/Other beings thoughts

"Rasengan" Techniques/Spells/Jutsu/Terms

Disclaimer: I don't own Naruto, Fairy Tail or any other franchise in any source of way; they belong to Masashi Kishimoto, Hiro Mashima and their respective owners

Prologue:

A Light in the Deepest Darkness

Tenroujima, year x768

Loneliness. A lot of people would tell you that its one of the worst feelings that exists. To feel like, even though there are million of people in the world, you are still alone, with no one to care, love or spend your life. To feel alone because you would never be able to see the few people that meant the world to you

It was truly a horrible emotion

And it was that same emotion that certain individual was feeling right now. This person was young man with a face that could be considered handsome, with black short hair and black eyes with a small circle-shaped necklace around his neck. He was wearing a high-collared black and tan robes with gold trim, along with a large, flowing white toga draped around his torso. This man was one that would always be remembering in history as one, if not the most, evil wizard that have faced this world. This man was none other that the Dark Lord Zeref

There were two things that stood out about this man at this moment though; one was the lost gaze that Zeref was giving to the stars. It was already pretty late, probably midnight, and Zeref's eyes were glued to the dark sky, his eyes a pool hiding an amount of sadness, grief, pain that were beyond of what the powerful black haired mage had ever felt in his life

The other thing to notice was the bundle that Zeref was carrying in his arms. Said bundle was covered with an orange sheet that hided who it was from everyone except for Zeref, who could not even bring himself to look because of the shame he was feeling right now

'I failed... I should have died, not them... I'm so sorry... Minato... Kushina...' were the thought that Zeref had right now, the death of the only people he had ever called a family fresh on his mind and hearth. How could he have failed so much? He should have stayed, he should have help them somehow... but he didn't, he left, he abandoned them, and now they were death and it was all his own fault

He might have been the one to kill them, but in Zeref's mind it was his fault too, and it was something that would forever torment his mind. He didn't care though; he knew he deserved something a lot worse than this. In his mind even death was something to 'good' for him.

The powerful dark mage was taken out of his thought by the sound of wings flapping, followed by a strong gust of wind, which made Zeref twist his body in order to protect the bundle in his arms. This gust of wind was followed by a temblor, which of course was originated because of the rough landing that the being that was now standing in front of Zeref had

This being was something that would make every man; woman and child to cower in fear by his presence only, let alone his reputation. This being was a gargantuan, mastodonic Dragon whose entire upper body was covered in black, round, scales, which, in turn, were decorated by spiraling, blue markings. His lower body, specifically his belly, inner tail, and legs, were gray in color, and appear to be rather smooth. The Dragon's eyes were white and beady, and his head is round and blunt with four, large, elongated plates extending backward. You could easily see that his mouth was full of razor-sharp teeth, and, attached to his chin, was a protrusion that resembles an arrowhead. His large wings were feathery in appearance, akin to that's of a bird. His black scales disappear at the end of his tail, which, in itself, ends in a stinger-esque shape. This monster was none other that the King of Dragons and probably one of the strongest beings in existence, Acnologia

Zeref of course was not surprised by the appearance of the gigantic dragon; he had called him after all. It was easy for him to do it, after all it was the dark mage himself that had turned Acnologia into a dragon in the first place, and every since that day both Dark Lord and Dragon of Apocalypses had have some sort of connection. While it was not like they could communicate mentally, they could easily tell when the other one was. It only took Zeref a few moments of concentration to be able to use that bond like a beacon, practically telling Acnologia that his presence was needed

Both human and dragon looked at one another in the eyes, Zeref's black ones looking directly into Acnologia's white ones, and for some minutes neither of the two powerful beings said anything. The only thing anyone could hear was the sound of the leafs moving because of the wind and, in Zeref's case, the calm breathing coming from the bundle he had in his arms.

In the end it was Acnologia the one who broke the silence, his head low, almost touching the ground, so that he could look directly at Zeref's form

"Zeref... It has been 400 years since the last time I saw you... I could not even feel your presence... I actually thought you had died somehow... and yet here you are"said Acnologia, his booming voice strong and grave. Of course Acnologia was someone that would never speak to humans, thinking of them as nothing but little insects that he could easily crush. But Zeref was different, he was not only the one that had given him this body, but was also probably one of the strongest humans to ever live, and that of course made Zeref something more than just a human in Acnologias's opinion

"Yes... While for you it had been 400 years, for me just a few days have passed" answered Zeref, his voice monotonous as always.

"I see... I should have known... after all the ability to travel through time is not something beyond you..." said the powerful dragon, coming to the conclusion that, for some reason, Zeref had found a way to travel through time and used it, traveling 400 years from the past to this present. Why though, wondered the black dragon, what could have possibly made a man like Zeref decide to mess with time itself?

"Indeed... I was given a task that forced me to escape from the past... and what better hiding place that the future itself?" revealed Zeref, a frown appearing in his face for a second at the thought of what made him come here. Just after that Zeref's gaze, for the first time since he got to this island, went directly towards the bundle he had in his hands and once again he was attacked by no little amount if guilt

In Zeref's arms, covered by an orange sheet was a little boy, probably of 4 years of age, with sun-kissed skin and spiky blonde hair. This boy was at the moment sleeping, but if he were awake Zeref would have seen a pair of sky-blue eyes full of happiness and innocence. Zeref was relieved that he hadn't woke up though, since he didn't know how would the young kid react or worse, how he himself would have reacted

Zeref was not the only that one took attention of the blonde kid. Acnologia too had focused his gaze in him and almost instantly a growl escaped his mouth. It was well known what Acnologia thought of humans and seeing one here annoyed him. Sure, he could easily accept Zeref, but not a little runt like that blonde child. The powerful dragon should not hove growled though, since as soon as he did he found himself the recipient of the powerful glare of an crimson-eyed Zeref.

"You better refrain yourself from doing anything Acnologia, or you'll find yourself begging me to end your suffering" threatened Zeref, his voice cold and a glare in his face directed at Acnologia, who actually flinched at seeing this, after all he could not remember the last time he saw Zeref so angered at anything!

"What is the meaning of this Zeref?" asked the black dragon, doing his best to keep anger in his voice; after all he knew that Zeref could go with that threat.

"This child here is the reason of my call to you Acnologia" revealed Zeref, and he was sure that at that moment Acnologia's eyes widened in shock before his focus turned to Zeref once again

"And since when did you become such a family man dark mage?"

"That is not of you concern Acnologia..." started Zeref, but was interrupted by another growl coming from the powerful black dragon, who was definitely not amused by what Zeref had implied

"I believe it is! Not only did you call me like this but you also did it with a human in your arms, which if I'm correct is someone you want me to train, isn't he?" growled Acnologia, trying to think of a plausible reason for Zeref's new found attention in this blonde boy, but he could found none. Of course the king of dragons did not know everything about Zeref's live, 'cause if he did he would find a reason easily enough. This outburst though just got another glare from Zeref

"My relationship with this child is not of your concern Acnologia... But you are correct, that is the task I'm commending you"

"And what makes you think I will accept such a task dark mage?"answered the dragon, his head closer to Zeref, although this didn't have any visual effect from the dark mage, who simply stood there with a bored gaze in his eyes and the young child in his arms.

"You will because you owe me Acnologia... it was me who gave you that body and its me who can easily take it from you, turning you into nothing but a human" retaliated Zeref, getting another growl and a glare com the king of dragons. Acnologia of course knew that Zeref was right, the massive dragon knew he was strong, but even him would not challenge a monster like Zeref

No one in his right mind would

"I'm not asking you to love this child Acnologia... I'm just asking you to train him like he was your own, just like how you were trained in the past" continued Zeref without missing a beat. The dark mage knew that he was playing with fire here by leaving his young charge with someone like Acnologia, but he had no other choice, he needed the boy to grow strong and he could not train him himself. Even now the seal that was keeping his powers at bay was weakening by the second. He could not afford to be close to anyone, specially this young boy, without the fear of his powers going out of control and killing everything around him

"Why Zeref... What is so special about this child that you're asking me such a thing?" interrogated the massive dragon; truly curious about why was Zeref going to such length to make sure that this boy was trained.

"This boy is going to face terrible things in the future Acnologia... things that no one should face and yet he has no choice on the matter... He needs to be strong if he wants any chance at surviving what is going to come, and for that I need you to train him" said Zeref, sadness in his eyes who were looking at his blonde charge. Of course would have liked a lot more if the young boy could have a normal childhood, but that was already out of the question.

Meanwhile Acnologia was pondering Zeref's request in his mind. Of course a big part of him wanted to just say no and be done with it. He had never liked humans, so to lose time by actually training one was something that the king of dragons never considered. But he knew better, he knew that this was a task he could not refuse, after all he didn't want to awake the wrath of Zeref. There was another thing to consider and that was what Zeref had just said about the boy. What kind of danger could a simply four year old kid have to face? Acnologia didn't know, but if it was enough to make Zeref do something like this it was something big.

It was just after a few minutes that Acnologia finally answered, opening one on his claws so that Zeref could have easy access to his paw

"Very well Zeref... only because is you who's asking me is that I will accept this job... but just like you said don't expect me to love or care for this child, I will simply train him and then be done with him"said Acnologia, expecting Zeref to put the boy on his paw so that he could take him away from this place. There was something about this island that Acnologia just disliked, he didn't know what, but he didn't really care about it since he doubt it he would ever set another paw on this place

At hearing the dragon's words Zeref gave a little nod of acceptance just before walking towards the black dragons open claw and putting his young change gently in the dragon's paw. The dark mage was not over though, since the next thing he did was to take out his necklace and gently, so to not awake the child, putting it around his neck. Just after that the dark mage took out something from his robes that Acnologia has never seen in his life

This weapon was a kunai, but it was definitely different that the normal kunai some people used. This one had three different blades instead of the normal one, and on its handle there was some strange mark Acnologia had never seen either. The black haired mage put the kunai besides the blonde child, knowing that if someone was going to be able to crack this spell it was definitely him

"Make sure he always has those things in his possession Acnologia... and thank you..."

After doing that Zeref simply started walking towards the center of the island, ready to spend the rest of his live here until he was needed, knowing that at least Naruto was going to be in good hands. Acnologia would never harm the child, even if he hated him he would not, if it was because of fear of Zeref's reaction or respect the dark mage didn't know, now did he care as long as their child was safe

"What is his name...?" asked Acnologia, who's wings were already extended and ready to take fly, making Zeref stop in his track. That's right; he almost forgot to tell the dragon the name of the child. Zeref didn't turn around though, but if he had Acnologia would have seen the tears that were falling from the powerful mans eyes

"Naruto... Uzumaki Naruto... That's his name" said Zeref, doing his best to keep his feelings away from his voice, revealing the young boy identity. This got nothing but a nod from the massive dragon, which was just starting to take fly, doing his best to make sure young Naruto was safe in his paw

Zeref didn't have to turn around to know that Acnologia had already left. And once again the feeling of loneliness strike him hard in his heart, but he knew that it was necessary, after all as long as He lived there was no way that Naruto could have a normal life, let alone Zeref himself. But right now there was nothing else he could truly do. He could just sit, wait and hope, hope that Naruto could grow strong enough so that not to fall against that monster he once called friend.

'Good luck... Naruto-kun...'

And whit that Zeref disappeared in the shadows of the night, never to be seen again until the time he was truly needed...

...By the boy that was his Godson

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I could not get this idea out of my mind so I ended up writing it or well at least a little prologue about it. The premise of this fic is to play with Zeref's past, something that the Fairy Tail manga had not really touched, so you can expect that the past of both Zeref and Naruto is going to affect greatly this story.

I'm going to warn you already in the fact that this fic will have some genderbend of some male's characters from Fairy Tail. Why? 'cause not only I like a good genderbend but I also like to annoy my friends and this is a good way of doing it

This is also my take in an "Acnologia trains Naruto" fanfic, something that I wanted to write for a while now. Well until next update!.