Forcibly Abducting Mito Uzumaki

This requires the brain to rapidly generate a large amount of corresponding ocular power.

This part is where the difference in aptitude lies.

Some Uchiha, upon experiencing extreme stimulation, will have their brains follow suit and catalyze the production of ocular power.

Yet, for other Uchiha, even if they are stimulated, the ocular power catalyzed is minimal.

My ocular power should have reached the standard; why has it not evolved into the Mangekyō yet?

Shimizu pondered the issue of the Sharingan.

His ocular power was already sufficient to rival that of a Mangekyō; he should have awakened the Mangekyō just like his ancestor Indra, yet he remained stuck at the same stage.

I must accumulate a massive amount of chakra and then perform a one-time release.

Shimizu created a Shadow Clone to continue the experiments while he went to wash his hands.

Ocular power is a special type of chakra, categorized under the broader umbrella of chakra.

Theoretically, it is also possible to accumulate it.

Such a ninjutsu exists in the ninja world.

And it has been active for a millennium.

That is the Yin Seal!

The Yin Seal is likely a secret technique of the Uzumaki Clan, used to seal one's own chakra; it requires extremely precise chakra control and a foundation in exquisite Sealing Jutsu.

Mito Uzumaki possessed the Yin Seal, and it was only through Hashirama that his granddaughter Tsunade inherited it.

It was eventually passed down to Sakura, inherited from generation to generation.

By obtaining such a ninjutsu and improving upon it, Shimizu could theoretically perform the operation of storing ocular power.

In this way, even if he could not awaken the Mangekyō Sharingan, he would no longer be in danger of going blind.

Mito Uzumaki, is it.

The image of Mito Uzumaki in her youth,