Opening the Mangekyo Sharingan Experiment... Failed!

After instructing a Ninja Cat to deliver a message confirming his safety to Fugaku Uchiha, Uchiha Yansheng decided to conduct his strength-enhancement experiment amid the ruins of the Empty Zone.

At this point in time, aside from the possible Ōtsutsuki Clan, Nagato was likely the strongest enemy Uchiha Yansheng could encounter.

Without having healed his legs, Nagato would not pose much of a threat to him with the Six Paths of Pain alone.

But now, Nagato's body had likely been fused with White Zetsu cells, and there was a strong chance that Kotoamatsukami had altered his mind.

More importantly, the Rinnegan was practically the perfect counter to Uchiha Yansheng's fighting style, which relied purely on overwhelming opponents with massive ocular power.

If he had not learned Flying Raijin in advance, he would probably have had to use some of his trump cards, such as Izanagi, his Sage Mode with its many hidden risks, and a whole series of other high-cost forbidden techniques.

The risks involved in any technique that someone like Uchiha Yansheng classified as forbidden could easily be imagined.

"I've decided. I need to find a way to awaken my Mangekyo Sharingan. It's the simplest and safest way to increase my strength."

"Only with the Mangekyo Sharingan can Susanoo truly unleash its power and avoid being so easily absorbed by the Preta Path."

From among a series of experimental plans, Uchiha Yansheng selected what he considered the simplest one and began preparing to carry it out.

However, before beginning the experiment to forcibly awaken the Mangekyo Sharingan, Uchiha Yansheng still had much preparation to do.

For example, he needed to create a Hashirama Cell culture medium for the cloned One-Tomoe Sharingan so they could grow into Three-Tomoe Sharingan in the shortest possible time.

After all, the Uchiha Clan's stockpile of Three-Tomoe Sharingan that he had obtained from Fugaku Uchiha was nearly exhausted.

Although he disliked this slow cultivation method, Uchiha Yansheng still had to make preparations, lest he need them one day and have no Three-Tomoe Sharingan left to use.

As a member of the Uchiha Clan, his own eyes were the most useful. Unless absolutely necessary, Uchiha Yansheng would not abandon them.

There was also the cloning experiment involving Divine Tree Cells.

During the previous encounter, although Uchiha Yansheng had spent the whole time fleeing, he had not done nothing.

Before leaving, he used Flying Raijin's spatial-transference power and, after repeated attempts, successfully cut a tiny piece from the Demonic Statue of the Outer Path.

The severed piece was only the size of an infant's fist, utterly inconspicuous compared to the Demonic Statue of the Outer Path.

But it was, after all, part of the Divine Tree, and Uchiha Yansheng planned to try cultivating it.

As for the outcome, he held no expectations.

After all, the Divine Tree could practically be considered the foundation of the Ōtsutsuki Clan.

With Uchiha Yansheng's current technology, there was simply no possibility of producing any results from studying it.

This was a long-term goal.

Once these two preparations were complete, the experiment to independently awaken the Mangekyo Sharingan was about to officially begin.

Unlike Itachi Uchiha, Uchiha Yansheng had nothing precious in his heart, no tragic experiences, and no Kotoamatsukami to assist him.

Therefore, if he wanted a chance to awaken the Mangekyo Sharingan, he could only take a different path.

For his extreme emotion, Uchiha Yansheng chose anger as the trigger for awakening his Mangekyo Sharingan.

Next came a specially modified White Zetsu infused with Hashirama Cells.

White Zetsu cells were very similar to Hashirama Cells, yet fundamentally different. Hashirama Cells possessed far more vigorous vitality, to the point of becoming extremely invasive and easily spiraling out of control.

White Zetsu, on the other hand, was a very gentle existence, one with an almost deathly stillness.

But if the vitality of Hashirama Cells was injected into that gentleness, White Zetsu could unleash immense power.

As a biological weapon, White Zetsu was highly successful, but it required a powerful energy supply.

Uchiha Yansheng had reason to suspect that Hashirama Senju's Wood Release had likely originated from the Divine Tree. Perhaps Black Zetsu had even created it personally, all for the purpose of cultivating Madara Uchiha's Rinnegan.

Of course, there was no evidence for such speculation.

But none of that mattered. What mattered was the White Zetsu outer shell Uchiha Yansheng had created, infused with Hashirama Cells.

This thing could grant Uchiha Yansheng regenerative abilities no weaker than Hashirama Senju's for a short period of time.

Uchiha Yansheng clearly remembered that when the Sage of Six Paths awakened the Sharingan, it evolved directly into the Rinnegan, while his son Indra awakened the Eternal Mangekyo Sharingan outright.

Taking everything into account, as long as he possessed recovery abilities similar to a Sage Body, the difficulty of awakening the Mangekyo Sharingan would surely decrease considerably.

Finally, Uchiha Yansheng took out the tiny amount of special chakra he had once extracted from Itachi Uchiha's brain and used the Transcription Seal Technique to seal it into each of his Sharingan.

"This still doesn't seem to give me a very high chance of success..."

After thinking for a long time, Uchiha Yansheng took out a Three-Tomoe Sharingan, performed a minor operation on his palm, then used the Transcription Seal Technique on the Three-Tomoe Sharingan in his hand and sealed Izanagi within it.

Failure was one thing. There could be absolutely no mistake with his life.

With this safeguard in place, no matter what complications arose during the experiment, they could be remedied.

Immediately afterward, Uchiha Yansheng injected the anger-inducing drug into his body without hesitation, followed by a drug meant to paralyze his flesh...

Under extreme anger, losing control was inevitable. Therefore, measures to restrain his body were necessary.

Next, during the last moments before the drugs took effect, Uchiha Yansheng put on that White Zetsu outer shell infused with Hashirama Cells.

At once, Uchiha Yansheng felt a vast surge of vitality merge into his body.

Time passed second by second. The paralysis drug Uchiha Yansheng had injected had taken effect, and he had now lost control of his body.

Yet the anger-inducing drug showed no signs of taking effect.

Just as Uchiha Yansheng thought his experiment had failed, a burst of extreme anger came from nowhere and surged into his heart.

At the same time, the special chakra sealed within Uchiha Yansheng's eyes began merging into them...

But unfortunately, at that moment, Uchiha Yansheng's mind contained nothing but rage.

Had he not already lost control of his body, the trump cards he had treasured for so long would likely have been unleashed one after another.

Three months later, Uchiha Yansheng emerged from the laboratory with a pale face, his eyes still carrying a complicated blend of joy and conflict.

"Yansheng? Did your experiment succeed?"

Chachamaru, who had stood guard outside the door for three months, asked with a face full of concern.

But Uchiha Yansheng knew that Chachamaru was not truly worried about his safety. He simply wanted Uchiha Yansheng to help him conduct Sage Art chakra research experiments on more female cats from the Ninja Cat Clan.

Uchiha Yansheng had no other thoughts about that, naturally, but Cat Granny knew that Uchiha Yansheng's research into natural energy was still insufficient.

Thus, in the entire Ninja Cat Clan, only Chachamaru had retained the ability to wield Sage Art chakra.

"No, the experiment to awaken the Mangekyo Sharingan failed. But by chance, I discovered something even better..."