19 Secrets of Sharingan

" Gold and silver brothers..? I remember them, there were two people who called themselves that. "

Shin nodded, as he told Kurama to speak again.

Kurama continued, getting permission.

" I had swallowed them, they didn't die inside me, hardy bunch. They survived and started eating my flesh to live, as soon as I understood something was up, I spit them out. "

Shin nodded, this much was something he knew, and now confirmed, so he asked his second question.

" Why did they survive eating your flesh? What did that do to them exactly that they gained your chakra permanently? "

Kurama took a second to understand the question, as he began speaking with some thought.

" They.. they looked familiar to me, they gave me the feeling the old man, at least their blood did.. "

Taking a pause, kurama mumbled.

" That was why I didn't chew them but simply swallowed them, to hurt them less.. I would assume they survived because they were related to what you would call the sage of six paths, their bloodline was what got them to survive. "

Shin nodded again, as he too was thinking, he knew this information as well, this part was mentioned in the canonical series, the gold and silver brothers lived due to being the sage's descendent.

Kurama, answering the first question, started answering the next.

" When they ate my flesh and lived, my power was integrated within their bodies, so they could access my chakra, or convert their own to mine. "

This answer of kurama was very vague, but he was a fox, not a scientist, this much was enough.

Shin put together the rest.

" I see, so your chakra changed their bodies, or their genetic makeup in a sense, that is why they got those fox whiskers, this boy Naruto has them as well due to his mom being the jinchuriki and you affecting this boy's body from before he was even born, changing his genetics ever so slightly with daily radiation. "

Understanding the cause and effect, Shin spoke again.

" None of your other jinchuriki had whiskers, Mito didn't, Kushina didn't, neither did Minato. Because they didn't get their genetic makeup altered like these guys. "

Nodding to himself he concluded.

" So that explains why the gold and silver brothers could use your chakra all the time and never run dry, your flesh was limited, using it should theoretically have limited opportunities. But that becomes null and void if their bodies themselves produced your chakra, due to getting their genetic makeup altered. "

Nine tails just watched numbly, he didn't understand much, but he got the jist.

Shin asked another question to Kurma.

" Do you know how Sharingan evolves? "

Kurama shook his head.

" I do not, but I would assume it is to do with yin chakra. "

Shin nodded, he said.

" Go on. "

Kurama gave a nod as he spoke once more of his ideas.

" The Uchiha as you call them nowadays, are all coming from the Otsutsuki Indra, that guy was the son of the old man, he had the yin half of his chakra, so I would assume an increase in Yin is what gets the Sharingan to work or evolve. "

Shin smiled, yes that made sense. So he was the one speaking surely this time around.

" Yes, it is to do with yin, that is why whenever a Sharingan evolves from a spike in yin from intense emotions, it slowly but surely pushes one to new heights of power. "

Narrowing his eyes, shin told his deduction.

" Chakra is a balanced yin and yang energy, if one is out of balance, the second one tires to get back in balance, resulting in a slow increase in yang, which in general increase chakra quantity and thus pushes you to new levels of strength."

Smiling, Shin said.

" It's a feedback loop. "

Kurama nodded once more, as he again got the jist of it, it wasn't that hard.

" That makes sense, why there are so many ways to get permanent mangekyou sharingan, Indra had one naturally, Obito will get permanent ones during the war arc, there is that method of swapping eyes called eternal mangekyou and lastly Hashirama cells can be used to make them semi permanent. "

Laughing lightly, Shinnosuke smiled.

" All of them are simply getting their yin and yang balanced in various ways, a regular Ninja can't possibly have super kage level chakra naturally, so mangekyou always goes blind in everyone but Indra. "

Looking up, kurama was looked at by Shin again.

He had been a big help in understanding the real effects of Sharingan.

Now there was only one thing left of ask.

" Say, you are all yang correct? "

Kurama nodded, he was the pure yang part of nine tails, the yin part was taken by that bastard Minato.

" And only the sage descendants can survive eating your flesh correct? "

Kurama nodded again.

Shin smiled widely as he asked one more question.

" I am an Uchiha, I am a descendant of the sage too.. correct..? "

Taking a little longer this time to think, Kurama finally nodded again.

To which Shin burst out laughing.

His theory can finally be put to practice.

" Say, a body of balanced yin and yang, chakra of both Indra and Ashura, and your immense chakra as fuel.. "

Showing his teeth, Shin took on a ferocious face.

" That finally added with your flesh changing the genetic makeup if consumed and survived..! "

Laughing out loud, like a man gone mad, Shin exclaimed.

" How far do you think my Sharingan can evolve with those conditions nine tails! "

An infinite pool of chakra, both parts of Ashura and Indra, and a way to make his body permanently produce all this chakra, everything fitting together perfectly..

Shin after all these years, had cooked up something truly terrifying.

If Kurama had any sense left in him, he would have now felt fear sensing the true emotions of Shinnosuke Uchiha.