Artificial Mangekyō Sharingan

Gospel Hospital.

Toji slowly opened his eyes.

He naturally understood that in a place like the Shinobi World, without power like Hashirama's and Madara's, huddling together for warmth was the only solution. There was strength in numbers.

An organization supported by only its boss and one member was nowhere near enough.

In Toji's vision, the Passion Organization should be an existence on par with Akatsuki.

Adhering to the principle of quality over quantity, its members had to be the elite among elites, specially carrying out those dark tasks he could not conveniently handle under his Konoha identity.

But that brought another problem...

For the moment, Toji could not think of any ninja of this era worth recruiting into the organization.

Should he take the classic route and recruit future Akatsuki members early? Sasori, Jūzō Biwa, Kisame Hoshigaki, Deidara, Konan... their parents probably had not even been born yet.

As for Kakuzu, he was hard to track down.

More importantly, Toji did not want to make contact with him again too early.

That old bastard who knew his past and possessed similar power was a hidden danger to him.

And at present, only one of Toji's main body and parasite body could unleash its full strength.

So...

The Passion Organization did not even count as a makeshift crew yet. At most, it was a two-man act.

Toji could only rely on the art of persuasion for now, painting Uchiha Yan a picture of the organization's strength and bright future. If she kept pressing him with questions, it would not be good for unity.

As for members, he would see about that later.

And the Mangekyō Sharingan Uchiha Yan so desperately pursued...

It was the strongest heavenly eye, capable of seeing through the three realms. It was not something that could be deconstructed so easily.

However, Toji had already found a lead.

While conducting long-term examinations on Uchiha Chiri, he had used checking her eye condition as an excuse to have her activate her Sharingan voluntarily.

After repeated contact with the chakra from the Mystical Palm Technique, Toji sensed that whenever Chiri activated her Sharingan, her brain secreted an extraordinarily peculiar type of chakra with completely different properties.

It belonged neither to Yin-Yang Release nor to mere ocular power.

It had properties similar to the chakra that surged from Uchiha Yan's brain when she activated her Sharingan.

Toji concluded that this special chakra originating from the depths of the brain was the true key to awakening the Mangekyō Sharingan.

He named it: Primordial Chakra.

Ocular power was used to perform ocular techniques, while Primordial Chakra was used to activate the Sharingan.

In his previous experiments on Uchiha Yan, no trace of this chakra had ever been detected, no matter how intense the emotional stimulation he applied.

From this, Toji arrived at a cruel threshold—

[Only a very small number of Uchiha secreted Primordial Chakra from their brains at the moment they lost the strongest love in their hearts and suffered a mental breakdown.]

And even witnessing the death of a close relative did not necessarily allow everyone to produce Primordial Chakra.

Differences in constitution, talent, and mental strength meant that everything was only a matter of probability.

How many intense loves could a person have in a lifetime? Once lost, there was no second chance.

If it was not secreted at that moment, it meant they were fated to never obtain the Mangekyō Sharingan.

But Toji had thought of another path to awakening it.

Those who could not secrete Primordial Chakra simply could not. But for those who had already awakened it, their brains would continuously produce trace amounts, and every activation of the Sharingan would leave behind a tiny surplus.

Extracted chakra would disappear if left unused.

Because this tiny surplus had no use, it would flow back into the body.

His plan was to gather these minute amounts of excess Primordial Chakra bit by bit and store them with the Yin Seal. Once the total amount was sufficient, he would inject it all at once into other Uchiha ninja, stimulating their brains and thereby producing entirely new Mangekyō Sharingan.

But if too much was extracted at once, the brain might be damaged and become unable to secrete Primordial Chakra again, causing the Mangekyō Sharingan to permanently regress into the Three-Tomoe Sharingan.

It was just like drawing blood from an ordinary person.

Drawing too much at once could endanger their life. But as long as enough time passed between small extractions, there would be no problem.

This method was feasible, but it did not guarantee the awakening of the Mangekyō Sharingan. It merely increased the probability.

But Toji felt...

"Worth trying."

Following this path, not only the Mangekyō Sharingan, but even ordinary Sharingan could be awakened this way in Uchiha who originally lacked the talent to awaken them.

"Let some Uchiha awaken their Sharingan first, creating a cycle where those who awaken first drive those who awaken later."

"However, even with this method greatly lowering the difficulty of awakening, there are still thresholds."

"Those who awaken must master the Yin Seal and willingly cooperate in having their Primordial Chakra extracted. When they release the seal, I will use Earth Grudge Threads to extract all of the Primordial Chakra..."

Toji sat in his chair, lost in thought.

Neither condition would be easy to fulfill.

For the first, only Uchiha Chiri in Konoha possessed the Mangekyō Sharingan, and she did not yet know he was researching it. For the second, Toji had never used Earth Grudge Threads for such a complex operation.

"Looks like it is about time to give the Yin Seal to Uchiha Chiri."

Toji let out a long breath, his gaze firm.

The opportunity he had been waiting for to hand over the Yin Seal had arrived.

He did not do things with no profit in them, and he did not care about affection or trust. But if this could tie Uchiha Chiri to his Artificial Mangekyō Sharingan creation project, he could not help being tempted.

It was foreseeable.

Giving the Yin Seal to Uchiha Chiri would inevitably make her affection for him soar, perhaps even causing her to fall into a state nearly like love.

And women in love were irrational.

Especially women born into the Uchiha, the clan of love.

Anything unreasonable or suspicious would be automatically beautified and overlooked by the brain.

That was precisely the opportunity Toji wanted.

He would use it to make Uchiha Chiri cooperate and continuously store Primordial Chakra.

Once the Yin Seal had accumulated enough, he would use the harmless "Heavenly Mercy Thread" in her understanding as cover to extract that precious Primordial Chakra.

A flawless plan.

Toji changed into surgical scrubs and headed for the operating room according to the surgery schedule arranged by Yakushi Yashi.

The person requiring his treatment today was Sarutobi clan Jōnin Sarutobi Shūshō.

What a coincidence—this man was also Hiruzen Sarutobi's third uncle. His heart had been injured while carrying out a mission in the Land of Lightning. He had barely preserved his life with the Reverse Cursed Technique taught by the Senju Clan before being rushed to Gospel Hospital.

Fortunately, he survived.

Unfortunately... he had lost his future from that point on.

As practiced as before, Toji planted a Parasite Seed in Sarutobi Shūshō's heart.

This time, Toji added another step to the surgery.

Heavenly Mercy Threads extended from his palm and drilled into the man's heart, attempting to extract chakra while it continued beating inside his body.

Directly extracting chakra from a living heart was also a first for Toji.

This was different from those ordinary Chunin test subjects.

The person whose awakening chakra he would later extract was Uchiha Chiri. The material he used for practice had to be at least Jōnin level in order to minimize mistakes during the actual procedure.

Toji began practicing for the Artificial Mangekyō Sharingan experiment.