An abandoned alleyway
A small blonde-haired boy around 7 years of age was laying a puddle of his own blood with cuts and bruises all over his body. The boys name was Naruto Uzumaki the hated demon boy of Konohagakure-no-Sato. All of a sudden two white flashes and Altair as well as Ezio appeared next to the boy. They nodded to each other as a sign of greeting and agreement.
Ezio picked up the boy and ran out of the ally way to a large white building that he assumed was a hospital while Altair ran next to him. When they both reached the light of lamp posts they discovered they were slightly transparent, but were able to pick things up.
When Ezio and Altair got to the hospital they burst through the doors slightly panting. The hospital was running smoothly no seriously injured patients when to strange men run into the lobby. They both wore white robes with a hood that was up with a slight pointed tip looking like a beak and they each had a scar over their lip. One had a triple layer belt with harnesses on his belt, right shoulder and left boot. With sheaths on the top of his back and at his side, but no weapons except tiny knives and a vambrace with a small blade under it. He was oddly a little bit see through.
The other one had only a single layer belt with the same harnesses only instead of one being on the top of his back they were all on his left side with more of those belts one his main belt around his waist holding 25 knives he also had the same vambrace and blade as the other one but his were covered in blood and held a seemingly dead body. The secretary spoke up from behind her desk after examining the men.
"Yes may I help you," she said to the robed men.
"This boy here requires medical attention and now,"Altair said to the woman more than a little shocked at how she didn't notice Ezio's blood covered arms or the boys body.
"I know however we do not treat his kind" she said putting emphasis and hatred on the word kind
Altair disappeared and appeared in front of her with his Hidden Blade deep into her neck splattering blood over the desk, her, and his arms. "Anyone else want to die by his blade tonight if not then you will treat this boy or suffer the consequences" Ezio commanded them with all his power and experience from being the mentor of the Italian and Roman Assassins.
Needless to say the doctors scrambled to save themselves while healing the boy.
The next day
Ezio and Altair were sitting in the chairs around the blonde boys bed and were waiting for him to get up. Now that he was clear of blood they could see that he had three whisker marks and a scar over his lip like theirs.
"What do you think Altair?" Ezio asked the man next to him
"Well we obviously have a lot of work to do. Since the village hates him this much that the hospital staff who are supposed to be dedicated to healing wont heal him," he spat out the sentence with disgust in his voice
"Well we should start on his skills I will teach him the skills I learned over my travels in Constantinople and Italy," he suggested to Altair.
"That is a good plan I will teach him strategy and the older tools of the Assassins," he told Ezio finalizing the plan for his training but unknowing of what is going on in his head.
Inside the boys head
The blonde boy woke up groggily opening his eyes revealing him to have heterochromia with one eye being blue the other being red. The boy slowly sat up surveying his surroundings with a critical eye not meant for a boy his age of 7. His surroundings seem to be some type of sewer with clear water going up to his ankles and glowing pipes surrounding him they were all red and leading down a single corridor. Figuring little to no people could be down there he followed the single hallway. The farther he walked through the corridor the brighter the glow got on the pipes and the water turned murky and a red glow covered the walls and ceiling that wasn't covered by pipes.
Finally he entered a large room big enough to fit at least 3 Hokage Monuments in it with a cage door connecting with the roof and floor. The crack in the door where the two sides meet held a small piece of paper with the kanji for seal on it.
From behind the door two large red slitted eye bigger than the boy himself slowly opened. While a large tooth-filled grin followed with teeth bigger than the boy. The voice spoke in a deep mocking and menacing voice. "So my jailer comes to visit me, I'm honored"
"So I take it your the great Kyuubi no Kitsune" the boy said not caring about the large and dangerous facial features of the now revealed giant fox
"Well well I see my jailer has some knowledge" it said in a mocking tone
"Okay now that I know who you are I would like to know where we are" the boy asked trying to be polite
"Well there goes that knowledge I thought you had, anyway we are in your mindscape a place deep in your mind usually caused by hypnotism or by meditating deeply. However mainly Jinchuuriki." the fox explained after mocking him again.
"Okay since that's out of the way how about we make a deal. I will mainly leave you alone unless I need you and you will leave me alone since I know you obviously hate me."
"Hmm I accept your deal Naruto Uzumaki-Namikaze"
Those were the last words he heard before being kicked out of his mindscape in a bright flash of white light.
Hospital room
Naruto woke up while wrinkling his nose from the smell of antiseptics and closed his eyes from all the bright white walls, ceiling, and floor. He looked over and saw two men who were watching him like hawks, he tensed, when one, the one on his left, raised a hand
"Relax we are not here to hurt you my name is Altair Ibn-La'Ahad," he said in a calming voice. The man had most of his face covered all he could see was his lip which had a scar much like his own. He also had sheaths and harnesses white tiny silver knives in them on various places on his person.
"How do I know that I have had plenty of people say that then stab a knife in my back Altair," he said with distrust in his voice and eyes.
"Because if we wanted to hurt you we would have just left you in the alleyway we found you in and let you bleed to death." The one on his right while wearing mostly the same thing had more knives and only on his waist another difference was he actually had facial hair.
"I see but I still don't trust you," he told them bluntly.
"We didn't think you would trust us yet but we had hopes"he told the blonde "but since you know his name I am Ezio Auditore da Firenze Whats you name?" he asked after introducing himself.
"Naruto Uzumaki-Namikaze now what do you want?"he asked
"We were sent by someone to train you in our ways and protect you from the civilians here that wish you harm" Ezio explained to the blonde.
"Trained in what exactly" he asked cautiously
"Trained to be an Assassin like us" he said with utmost seriousness in his voice.
After thinking for a moment he said "Alright I agree".