Uchiha Takashi pondered for a long time, unable to figure out why, until he suddenly sensed the Senjutsu Chakra stored within his body and realized something.
If he remembers correctly, Hashirama Senju's strongest killing move was called Senjutsu: Wood Release: True Tree Senju.
Goodness, I'd forgotten all this time. The reason Hashirama is so powerful is because he was born with Sage Body and learned Senjutsu.
The natural power contained within Senjutsu generally requires a person with abundant Yang Chakra to be able to resonate with it.
Although Uchiha Takashi didn't understand the Mangekyō Sharingan's mechanics, he did know the Rinnegan's.
The Rinnegan never said that it necessarily requires Asura's Chakra or Asura's flesh and blood. It only said that it requires the balance of Yin and Yang, and that the combination of Yin and Yang can obtain the Power of All Creation!
Senjutsu Chakra itself represents the power of nature. Being able to learn Senjutsu means that your body inherently possesses Yang Release Yang Release Chakra. In other words, Uchiha Takashi originally had Yang attribute chakra within his body.
His Mangekyō Sharingan Yin Chakra was nourished by the Yang Chakra within his body, allowing it to automatically restore its power.
Based on speculation, the Eternal Mangekyō Sharingan requires genetic completion to compensate for the missing Yang Chakra within the body. Is it possible to use Yin to compensate for Yang? Or is it possible that Yin gives rise to Yang? This is indeed a possibility.
Uchiha Takashi suddenly realized, "Good, good, good! Because of his special physique, or rather, his soul, his Mangekyō Sharingan, from the moment it awakened, was not an ordinary Mangekyō Sharingan, but the Eternal Mangekyō Sharingan."
Because he used it infrequently, he didn't notice the Mangekyō Sharingan's power recovering; he thought it was just that he had a lot of pure eye power.
No wonder he Susanoo and immediately unleash the third stage of the Eternal Mangekyō Sharingan. So what if it's a bit stronger than the regular Mangekyō Sharingan?
Furthermore, the level of Susanoo seems to be unrelated to the level of the Mangekyō Sharingan. Even an ordinary Mangekyō Sharingan Mangekyō Sharingan activate Perfect Susanoo.
But why can't you usually activate the Mangekyō Sharingan? Because Susanoo requires practice. Without practice, how can you possibly activate its complete form all at once?
But if you want to practice, with your limited eye power from a regular Mangekyō Sharingan, and without the ability to recover, how could you possibly succeed?
Therefore, everyone assumes that the Perfect Susanoo the standard for the Eternal Mangekyō Sharingan. However, in reality, you can release Susanoo at any stage as long as you have ever had the Mangekyō Sharingan, provided you know how to do it or have practiced it.
This seems to explain why Madara Uchiha could still develop a Mitsudomoe even without the Mangekyō Sharingan. He may not have lost the Mangekyō Sharingan, but he had it before, so he could still perform the feat.
This explanation seemed the most reasonable, but what Uchiha Takashi couldn't understand was how, as Uchiha Clan, his body could possibly contain Yang Release Chakra.
Did Indra commit adultery or did Asura cheat on him?
Not necessarily... According to the original anime, Indra didn't merge with other people's eyes when he awakened the Mangekyō Sharingan, and he wasn't blind himself, was he?
Does that mean that Indra, due to the power of his genes, naturally generates yang from yin, and therefore doesn't need these things?
No, no, Uchiha Takashi felt he was falling into a misconception. He was always prejudicially applying the concept of Yin-Yang balance to the lineage unique to Indra.
However, upon closer examination, and considering this in the context of Hagoromo Otsutsuki, it all seems to make sense, since the Rinnegan belongs to Hagoromo Otsutsuki.
Indra himself represents extreme yin, so he does not need other Yang Chakra to compensate for it, and his eyes can remain forever bright.
His descendants, due to a lack of bloodline, suffered from a partial genetic deficiency, inheriting only his eyes and not his powerful physique. This resulted in them going blind after prolonged use of their eyes.
This is why two Mangekyō Sharingan must be combined to form the Eternal Mangekyō Sharingan; one Mangekyō Sharingan is needed to act as the eyes, and the Mangekyō Sharingan to alter the body, thus achieving the same level as Indra.
The Rinnegan itself transcends eternity, meaning Rinnegan level is higher than Indra's Eternal Mangekyō Sharingan.
While Uchiha Takashi didn't use genetic compensation to elevate his level to Indra's, he did use Yang Chakra to raise his eye level to the Rinnegan.
However, it seems that something was missing—perhaps genetics, or perhaps a deeper understanding of life and death—so his eyes didn't upgrade to the Rinnegan, but were instead forced to downgrade to the Eternal Mangekyō Sharingan.
This is the only explanation Uchiha Takashi could think of; otherwise, he himself wouldn't have been able to explain why (actually, the author couldn't explain it either).
Thinking of this, Uchiha Takashi immediately crossed his legs. If that were the case, wouldn't he himself have the Eternal Mangekyō Sharingan?
As is widely known, Madara Uchiha possessed the Eternal Mangekyō Sharingan, and combined with his exceptional combat skills, he was directly revered as the Asura of the Ninja World.
If Hashirama Senju hadn't been there, Madara Uchiha could have easily overwhelmed the Four Great Nations and swept across the Shinobi World. Doesn't that mean the Eternal Mangekyō Sharingan already possesses the potential to sweep across the Shinobi World?
If Uchiha Takashi were to master the Eternal Mangekyō Sharingan, could he simply stop eating beef, sweep across the Shinobi World, and become himself again?
Uchiha Takashi thought to himself smugly, "I'm not Indra. If I become stronger, no Asura will come to stop me."
That means he's currently the strongest Shinobi World, bar none! Sweeping through the Senju Clan is not a dream for him!
Thinking of this, Uchiha Takashi wanted to flip the table and announce on the spot that he would no longer eat beef.
But just then, an Uchiha clansman rushed in, his face beaming with joy. "Clan leader! Another Mangekyō Sharingan has appeared in the clan!"
Uchiha Takashi suddenly raised his head. "What did you say? Another pair of Mangekyō Sharingan! Who is it?"
" Uchiha Shin!" the Uchiha clansman said without hesitation, "I discovered these Mangekyou Mangekyō Sharingan when I was conducting my investigation this afternoon."
Uchiha Takashi sat back down in his chair with a thud. His eyes held no joy at the Uchiha Clan gaining a pair of Mangekyō Sharingan, only a faint sense of death.
This guy is no good. Uchiha Shin is no ordinary person. You guys are the reincarnation of Indra, personally recognized by Uchiha Takashi with his Mangekyō Sharingan!
The reincarnation of Indra awakened the Mangekyō Sharingan, which is a significant boost for the Uchiha. However, there's also bad news: the reincarnation of Asura from the Senju Clan will also become stronger.
It's not for any other reason than that old man, Six Paths Dao, he's biased! Indra goes through all that trouble to cultivate, Asura receive the same support from Six Paths.
Now that Indra has awakened the Mangekyō Sharingan, it's highly likely that the Asura either possess Senjutsu Senjutsu...