An Unexpected Windfall: Mangekyo Sharingan... Ten-Tails Cells? Divine Tree Seeds?

The plan to awaken the Mangekyo Sharingan had failed before it had even truly begun.

Other than letting Uchiha Yansheng experience the feeling of anger, nothing happened.

As for the special chakra extracted from Itachi Uchiha's brain, it had not been of any use either.

Whether there had been too little of it, or whether different people required different types of special chakra, it had ultimately produced no effect at all.

Since it had failed anyway, Uchiha Yansheng decisively waited for the Izanagi sealed through the Transcription Seal to take effect and alter the reality that had already occurred.

Izanagi and the Transcription Seal truly were the strongest combination.

Their only flaw was that Izanagi could not alter a future that had already happened. It could only change the time after Izanagi had been used.

Oh, right. It was also possible that using Izanagi was why he had failed to awaken the Mangekyo Sharingan.

After all, in theory, the period after Izanagi was used could be considered an illusion cast upon the world.

Even with Izanagi, a Three-Tomoe Sharingan seemingly did not qualify to contend with a Mangekyo Sharingan.

In any case, although the Mangekyo Sharingan experiment had failed, Uchiha Yansheng did not give up on improving his strength. He prepared another option instead.

That was right: the Tenseigan.

After cloning a hundred thousand Byakugan, Uchiha Yansheng had initially planned to replace his own eyes.

However, after discovering that he could access the Byakugan's ocular power by sealing those hundred thousand Byakugan inside himself using the method for sealing a jinchuriki, he abandoned that idea.

Original eyes were still better. If he did not have to replace them, it was best not to.

There was another reason as well: the purity of those hundred thousand cloned Byakugan was probably insufficient.

Now that he had discovered the inadequacy of his own power, Uchiha Yansheng began preparing to continue replicating the Tenseigan.

First, he cloned Hinata's eyes. As one of only two pairs of eyes in the original work whose purity met the standard, Uchiha Yansheng watched them closely during the cloning process.

Yet after they had been cloned, Uchiha Yansheng still could not find any difference between these eyes and other Byakugan.

Thus, Uchiha Yansheng activated his backup plan—purifying the Byakugan's purity on his own.

How was he supposed to do that? Naturally, he left it to the all-purpose chakra.

However, this method had another problem: how could he determine whether a Byakugan was pure? How could he tell what was an impurity and what was truly the Byakugan's own power?

Uchiha Yansheng naturally did not know, but he could use a clumsy method: use the chakra extracted from the hundred thousand Byakugan within his body to purify the cloned Byakugan.

As for what exactly would be purified out, Uchiha Yansheng naturally could not distinguish it. He could only increase the sample size and thereby raise the experiment's success rate.

To that end, Uchiha Yansheng cloned a hundred pairs of Hinata's eyes and began conducting purification experiments like mad.

A month later, only six pairs of Byakugan remained. Of those six pairs, only two still retained the state of Byakugan; the others had undergone unknown mutations one after another.

Setting aside the mutated Byakugan, Uchiha Yansheng could already sense differences between the remaining two pairs and the other Byakugan.

As for whether they were Byakugan whose purity met the standard, that still required specific experiments to confirm.

Originally, Uchiha Yansheng had planned to replace one of his own eyes.

However, during this period, Uchiha Yansheng discovered that the fragment of the Divine Tree he had acquired had undergone an unknown mutation under the influence of his chakra and natural energy.

To describe it specifically, it looked like White Zetsu flesh that was not quite so white?

No, unlike White Zetsu's lifeless appearance, this white substance was closer to the body color of the Ōtsutsuki Clan.

"Could this thing grow a Ten-Tails?"

"I remember that what Kaguya Otsutsuki brought to the Ninja World was a Divine Tree seed. Since it is a tree, it should be able to produce seeds too, right?"

Uchiha Yansheng stared at the thing he had created and fell into deep thought. Ten-Tails cells? Divine Tree seeds? Was it a trap, or an opportunity?

Immediately afterward, Uchiha Yansheng suspended the Tenseigan replication project and began researching this mass of white substance.

After more than a month of research, Uchiha Yansheng discovered that this thing really seemed to originate from some special existence of the Ōtsutsuki Clan.

It could absorb all kinds of chakra or natural energy to grow, and after growing to a certain stage, it could even feed energy back in return.

This trait really was very similar to the most primordial Ten-Tails.

Thus, Uchiha Yansheng named it the Little Ten-Tails and began a detailed study.

In the end, through this ability to feed energy back, Uchiha Yansheng successfully obtained two Mangekyo Sharingan.

As for why there were two eyes rather than one pair—

It was because Uchiha Yansheng only possessed the flesh and blood of three kinds of Mangekyo Sharingan: Kamui from Kakashi Hatake, and Kotoamatsukami from Shisui Uchiha.

As for Itachi Uchiha's ocular techniques... although they were powerful as well, their practicality was not very satisfactory, so they were discarded.

After obtaining the two Mangekyo Sharingan, Uchiha Yansheng's nourishment of the Little Ten-Tails had reached a certain limit.

The Little Ten-Tails had now grown over three meters tall. Aside from the Byakugan ocular power within Uchiha Yansheng's body, only natural energy could satisfy the Little Ten-Tails' growth requirements.

Furthermore, perhaps because he had fed it too much of his own chakra, Uchiha Yansheng could now sense the Little Ten-Tails' condition and abilities.

There was nothing much to say about its condition. It was constantly growing, and its energy requirements increased day by day.

As for its abilities, the Little Ten-Tails originated from the Demonic Statue of the Outer Path and inherited some of the Ten-Tails' ability to absorb natural energy and feed energy back.

However, perhaps because it lacked the chakra of the nine tailed beasts, the Little Ten-Tails did not produce chakra fruit when feeding energy back. Instead, it released a special kind of chakra that caused nearby objects to evolve.

After Uchiha Yansheng became able to sense the Little Ten-Tails' existence, he was able to control the release of this evolutionary power to a certain extent.

That was how the Mangekyo Sharingan in Uchiha Yansheng's hands had come to be.

At first, all Uchiha Yansheng had cloned from that flesh and blood were the most basic One-Tomoe Sharingan.

Having obtained the Mangekyo Sharingan, Uchiha Yansheng had theoretically achieved his original goal and could choose to return.

Yet as he looked at the Little Ten-Tails before him, an impulse rose within Uchiha Yansheng's heart. If the plan succeeded, he would possess talent or abilities comparable to those of the Ōtsutsuki Clan.

If it failed, he could simply abandon this body of flesh.

After considering it for a long time, Uchiha Yansheng still decided to take the gamble.

But before gambling, Uchiha Yansheng needed to choose a clone body for himself to use while his main body underwent evolution.

At this time, the Tenseigan cloning plan that had long been set aside could continue.

After selecting one pair from those two special pairs of Byakugan as the Tenseigan's vessel, Uchiha Yansheng began extracting his own cells. After fusing them with some Hyuga Clan cells, he cloned a new body.

Then he inserted the Byakugan, performed the Spirit Transformation Technique, and entered the new body...