Disclaimer: Naruto - RWBY - I own neither
Story Start!

"Okay... maybe nobody is coming to save me."

After a firm 17 years of waiting for somebody to come and either wake him up, rescue his mind, or do something about his current situation, Uzumaki Naruto had to admit that it was possible that he wasn't going to be getting any help at all. It was a sorry situation to find oneself in, but it was the situation that Naruto currently found himself in.

1. Reincarnation.
2. Brainswap.
3. Memory Transplant.
4. Soul Transfer.
5. Genjutsu.

17 years ago, one day Naruto just woke up to find himself... a baby just being born into a new world. He just woke up as a baby, and he had no idea what to make of his situation, and of course he bore witness to the woman who gave birth to him commit suicide within days of giving birth to him. She tried to drown him in a tub of water, and she even refused to give him a name... most likely didn't help that the man who was to be his father burned down the hospital that he had been born in, and tried to kill him as well.

Why?

Because he had been born with 9 Fox tails sticking out of his tailbone, and boy were they a hassle to deal with in daily living. Now that he was properly 17 years old again, though it was hard to mentally mature when you weren't even the same physical age as your memories. Now, at the age of 17 each of his tails was close to 1/3rd of his body height... so each one was about 55 to 60 cm long, bright orange tails that were just way too fluffy for his own good, and soft too.

So, Naruto had spent 17 years... just surviving in this new world, somehow he managed to activate his "Semblence" thing as a baby, and it saved him from drowning in the bathtub his mother attempted to murder him in. He had such a dumb semblence, it was powerful and useful, but the fact that he hated it was because apparently a Semblence represented an important part of the owner's soul. It was the manifestation of their aura, their soul, and he could only guess what his meant for him.

Still, in 17 years Naruto had come up with 5 possible things... and he had managed to rule most of them out.

1. Reincarnation: Ruled out, not the same dimension.
2 Brainswap: Ruled out, because he found it highly unpleasant of an idea that a newborn baby got it's brain transplanted in his across dimensions. He ruled it out purely because he hated the idea.
3. Memory Transplant: Not Ruled Out, because maybe his chakra leaked into this dimension somehow, and infected a baby that was this dimension's version of him.
4. Soul Transfer: Likely, it was just likely.
5. Genjutsu: Not likely, he had felt pain many times.

He... tested what it would take to wake him from a possible Genjutsu, and his dumbass learned pretty quickly that he was not in a genjutsu. He pinched his cheek, broke fingers, punched and kicked himself, smacked himself in the balls, and jumped off a building. His pain tolerance just made it so that he wasn't confident that what he did was enough pain to wake him from a powerful enough Genjutsu. So, another thing to do would be to replicate an injury that he knew he shouldn't be able to replicate.

Naruto removed his right arm from, not the entire thing, just the same amount of right arm he had lost in his fight against Sasuke. He crushed it underneath a tree and then cut it off... and once he woke up in the hospital, he learned pretty quickly that no... he wasn't in a genjutsu, and he destroyed his right arm for nothing.

"Bright side... cool new robot arm." Naruto appreciated the look of his fake arm. It had the right proportions, like somebody copy and pasted his left arm, flipped it, and put it on his right arm. It was the perfect size, decently durable, and there was a grappling hook-like feature built into it, so that he could use his hand and eject it, grab onto stuff, and reel himself in. "Dark side... I was a dumbass for even trying that out in the first place, but at least I ruled out Genjutsu... another bright side." Naruto stood up.

170 cm tall, just about where he had been when he was 17 years old in his previous life... or previous world, or whatever. His last recorded height was 166cm, but he was sure he had grown a little since then. Super messy, an uncontrollable mess of blond hair, bright blue eyes, and a lean build that he believed he had decently covered up with his outfit. Three whisker marks on each cheek, apparently part of the burning hospital building had left him with some scars. So, he could thank his now deceased father for his scars on his face.

He wore a white shirt with a red spiral inked onto the front, with an open, orange vest that he wore over it, sleeveless. Finally just regular jeans, and black sandles on... and a holster attached to his left leg that held his weapon.

Kurama.

That was what he named his weapon, since he was without his fox buddy in this world, Naruto named his gun after his friend. It was the handle of a sword... with the guard of the sword being a revolver with different kinds of vials of dust loaded into it. Considering he wasn't exactly a weapon user in his life, though he could use many different weapons, his weapon was just a short sword with a blade that retracted into the handle. The blade could gain the effects of the vials of dust that were loaded up into it. The front of the short sword would typically glow whatever color of dust that was currently loaded up into the "Active" chamber of the sword, and he could switch them out rather easily.

Fire, Ice, Wind, Electricty, Water, Plant, Rock, Gravity, and the final element of Dust he could load into his sword sword was Steam, the combination of Fire and Water dust.

"So... 17 years and none of my friends have rescued me at all, this isn't a Genjutsu... and I have memories up to... about 10 days after the war ended... but I might just be missing memories." Naruto hung out on the top of a building in Vale, one of the most "Faunus Friendly" kingdoms or so he heard.

Faunus, humans with animal traits, special abilities included night vision, sensative senses of smell, and if you had animal ears, sensative hearing. They were pretty much just humans with something extra attached, but there was super heavy discimination against them in 3 of the 4 kingdoms of Remnant, the world he was in.

Naruto had met 2 other people who were "Reincarnated" into this world from other dimensions.

He watched them un-alive themselves shortly after learning that there were more people like them, so he knew that he wasn't the only person in this world that had been dropped here in a body from this world. It felt almost like some higher power was playing with the lives of people scattered across the universes for their own amusement, because it just didn't seem like they were in this world for any particular reason.

Naruto had a theory.

A gut feeling.

It was like some kind of magnetic force, telling him that if he went to Beacon, he might be able to find more people like him. If he was being used as a game piece by some kind of higher being, then his gut feelings might just be that higher being giving him a clue as to what he needed to do. Every part of him just wanted to ignore his gut feeling just to spite that higher power, but the other part of him was too curious about where his gut feeling would lead him.

Thus, he applied to go to Beacon.

He wondered who he would meet while he was there.

Chapter End!
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Challenge Time
Naruto's Teammates will be 3 characters picked from other Anime/Manga, and 'Incarnated' into the RWBY world to fit in with the story.
1 Boy, 2 Girls.
No DBZ, One Piece, Bleach, or Sword Art Online suggestions, but other than that, feel free to suggest any character you would like to see "RWBYfied" for the story.