Hello everyone, this is a challenge made by jon49357 about a Naruto/Rwby crossover, hope i don't mess up haha.

This is a dark naruto story, and maybe a little op but not Kishimoto Op (I mean, nature's a freaking god according to Wiki!? ) so please if you don't like the story or made shitty reviews, please go to another fic where they can give a fuck since I won't.

Anyway,here we go!.

DarkNaruto/GrimmNaruto, human bashing, possible harem (not more than 5)

Prologue: Who are the real monsters?

Human nature is a funny thing, we live in 'packs', or social groups, yet if something's different or wrong within the group the rest immediately responds with violence, not matter if the 'wrong' thing is an innocent member of its group and lack the understanding.

Most of the victims of this kind of events don't live long enough to learn something from this, but those who does...those who were strong enough to survive...

...learns that you need to become even stronger and fight back, so no one can hurt you ever again.

Journal Entry # 148 - Black demons

In all of my life as a shinobi I never encountered such creatures as these ones. they skin,fur and scales are mostly pitch black like oil and have bone-like protuberances like the kaguya boy I found some weeks ago. I lost almost 30 of my mens capturing 4 of the creatures alive, the last one, a scorpion-like creature, forced me to kill it since i need these man for the time being.

I was surprised when the creature started to discompose at an unatural rate, so I had to use some of my sealing techniques that while not at the same rate as that fool toad or my former sensei, it still had it use.

I can't wait to see the potential of these creatures, that for the moment i'll name them as 'black demons', such terrifying appearances deserve the name.

Journal Entry # 257 - Kabuto's gift

Kabuto surprised me today. the boy was supposed to be my spy within my former village but 3 years after being deployed he broke silence way more earlier than it was supposed to. I was ready to send a snake summon to punish him but his message deemed this fault of his as something definitely worthy… the child of my rival for the title of Hokage, and container of the Nine Tailed Beast, has the same kekke-genkai as a kaguya…and Kabuto was bringing the boy to the base within the week.

I laugh to myself picturing the face of my team-mate and sensei when they know they lost such a diamond in the rough, one that I'll gladly shape into something great.

Journal Entry # 266 - Potential

Part of me can't help but marvel at the idiocy of my former comrades, the poor child is so attention starved that it only took a few words from Kabuto to convince him that we in Oto would treat him better than in Konoha, oh kami, I could help but laugh, the boy is so naive…

But Kabuto was right in certain aspect, I'll make Naruto-kun the best weapon the shinobi world had ever seen since Hashirama Senju, and with what I suspect it is a high regenerative factor from being a jinchuriki, his life span of an Uzumaki even if its not a pureblood, and the Dead bone pulse I have in my hands the instrument to make my goals true.

Journal Entry # 343 - Fortune

I can't stop smiling, even if I try my muscles are beginning to ache but I can help myself. I made a gamble that would have left Tsunade with her mouth open and send Naruto-kun to scout his former village, and what does he do?

He found the labs of an acquaintance of mine, Hiruko, from where the story of the Sannin just started. It looks like He and I were more than kindred spirits in our research of knowledge, but Hiruko got one step ahead of me before disappearing; Naruto-kun found a what appeared to be the prototype serum for an artificial kekke-genkai/hijutsu called Chimera no Jutsu that allows the user to take special traits from a subject: their kekke-genkai themselves.

Poor Naruto almost died when he tested the serum but I guess it was thanks for the Kyuubi that he survived. Just for that I'll lessen his punishment/training regiment.

If I can reverse engineer the technique, then maybe I wont need to use my body changing technique any longer.

Journal Entry # 404 - Hybridization

I wonder when will I stop being surprised by this child; last night Naruto-kun got into the kennels where I keep the surviving Kuro oni, variant Ningen/Okami. He stared at the beast in its eyes and after a moment he used the chakra of the biju and the chimera jutsu, to (for the lack of a better term) 'fuse' with the beast.

His skin began to acquire an ash coloring, spikes of bones not unlike the ones of the beast began to grow along his fore-arms, shins, and spine along with bone plates on his chest and thighs forming a pseudo-armor leaving only the joints exposed (have to remember this in case my little weapon feels 'rebellious' ), the 9 tails made of bone were both ironic and amazing to see.

And his eyes, his eyes remember me so much of the Uchiha's fabled Sharingan, but his lacked the tomoes and instead turned his sclera black leaving only a hellish red/orange iris with a slitted pupil.

If only he were not the jinchuriki of the fox, I would've have possessed his body, but maybe I can harvest his genes for a substitute if I the need arise.

Journal Entry # 501 Doble edge blade.

Its been almost 3 years since Naruto-kun came into my grasp, and I'm proud to see how powerful he has become since then, but now I have grown…perturbed, about how fast he's growing up power and physical wise.

Days after the transformation to his apparent permanent state of 'Akuma Hanyo' Naruto grew curious if he could made an hybrid of a person, I was curious too at the time and allowed him to experiment with 4 subjects I had in my possession, 3 almost died but the survivor, a girl with a foul mouth that reminded me of dear little Anko adapted quite well…almost TOO well.

The girl, call sign "Siren", grew a pair of spiked horns and her skin color turned black like a native of Kumo, she had some bone armor but it was more 'light' compared to Naruto; the eyes changed as well but instead of red she got golden eyes.

The thing that started my concerns were the whiskers mark on her cheeks and the docile attitude (at least compared to others, even me) towards her 'Alpha'.

Not too long after Naruto took Siren to visit one of my subordinates base, and by the time they returned they informed me that Amagai had 'rebelled' and had to be eliminated, they gave me the 'salvaged' information about Amagai projects but they kept a girl that was apparently the late scientific gem a lesser hybrid girl called Isarabi.

Soon the little expeditions were more frequent and Naruto returned with either a new bloodline, a weapon or a 'pack member' (Leech,Berserker,Seer,Sentry,Firefly and Riptide) .

The boy planned to betray me, and I cant decide whereas to be furious or proud…maybe a bit of both.

Journal Entry # 555 - Law of the snakes.

I curse myself for letting this happen, of course i forgot that I taught the boy in the way of the snakes, so when he saw any kind of weakness in me he took the chance like a good shinobi.

While I was busy searching how to posses the last uchiha, Naruto-kun amassed an army right under my nose, at first it was just his little clique of hanyos but soon it grew way beyond control.

He not only turned half of my elite forces to his side, he found more Onis (the WHERE? was the important question) that submitted to him, like animals towards an apex predator.

The thing is…he didnt try to kill me.

Yes, he wrecked my bases and left me crippled in a well made ambush, but it was nothing that i couldn't recover for and both of us knew it. what he did was to take his not so little army and dissapear.

How curious, in a twisted way i feel like a proud parent that now knows that his son is ready to leave the nest…only i want to kill him too.

In the bright side, I still have the notes on the 'perfect' chimera jutsu that was left 'conveniently' on Naruto's former chambers (that cheeky brat…) and I'll have the last laugh at Akatsuki and Konoha, knowing that their precious jinchuriki was not way out of their reach.

He even left me a message, telling me that he was now among his 'kin' hidden in a world of 'Shadows and Dust', knowing that meant where the Onis came from, I can only pity the unfortunate souls that encounter my wayward student.

I took a boy that ran away from home because they said he was a monster…and its seems fitting that I created one, how ironic.

(Last Entry of Orochimaru Journal concerning Naruto 'Akuma' Uzumaki, S-class missing-nin).