Start with a Zanpakuto and build the strongest Mist Village.

Yes.

Danzo was severely injured by Hyorinmaru. Although he escaped with the help of Izanagi, the subsequent damage still caused him great trouble.

In order to maintain his condition, Danzo performed surgery on himself using the First Hokage's cells as soon as he returned to Konoha. It was because of this that Yoru obtained the First Hokage's cells from him!

"The first-generation cells have extremely high activity; even without a source of nutrition, they can still maintain extremely high activity levels. However, these cells are extremely domineering, and their energy is highly materialized. If the energy ratio is not properly controlled, they are extremely prone to 'lignification'."

"However, by using white blood cells as a nutrient source, we were still able to successfully promote the stable proliferation of primary cells and complete the stage of cultivation of primary cells."

Yukiko couldn't hide her excitement and said, "In addition, based on the data and ideas you provided, we also tried to combine your prosthetic body with the first generation's cells. After many studies, we successfully developed a 'fusion agent' that combines Yumi's Whirlpool cells with White Zetsu cells and a little bit of Kaguya's cells, which can stabilize the first generation's cells to a certain extent."

"Furthermore, we have also discovered that after your artificial body was injected with the Uchiha clan's cell genes and implanted with the First Hokage's cells, the power of your Mangekyou Sharingan, which had suffered severe damage, has actually begun to slowly recover!"

Yukiko Touna excitedly recounted the latest research findings, using vocabulary that left Akira Minazuki, who only knew a little about the situation, somewhat dumbfounded.

Uzumaki cells, Uchiha cells, Mangekyou Sharingan, First Hokage cells...

Without a doubt, the first-generation cells that can be listed alongside these terms are definitely not the cells of the first Mizukage, Hakuren.

In just a few months since taking office, how could Yoru have allowed Kirigakure's bloodline research to progress to this extent so quietly?!

With the foundation of Kirigakure, it's impossible to do this. The reason we were able to achieve this level is entirely thanks to Danzo.

What he provided.

It was entirely due to the fact that Kirigakure's research was built directly on the foundation laid by Danzo and Orochimaru, and with the unreserved resource investment of a 'Kage,' that they were able to achieve what they have today.

"Well done, Yukiko!"

Yoru nodded affirmatively. The first generation of cell cultivation and the restoration of Kotoamatsukami Mangekyou Sharingan were undoubtedly surprising, and it was no wonder that Yukiko was so happy.

correct.

Since primary cells can already be cultured on a large scale, and even implanted into the human body, wouldn't that mean...?

"Jing, how is Uchiha Shisui doing?"

"Uh, it's not so good."

Mizuki Akira snapped out of her daze and whispered, "Natural conception is too slow, and that Uchiha guy's health isn't very good either. It's inefficient and simply can't meet the needs of our village's hundreds of people queuing up."

"For various reasons, we have been obtaining seeds mainly by directly learning from other countries recently. We plan to use artificial cultivation methods for sowing."

"Using this method, the village has successfully helped hundreds of women complete seed cultivation. There are still a large number of seeds left over, which are stored in ice and ready for use at any time."

"But Uchiha Shisui... one thing is for sure, he's not dead yet."

"..."

I silently mourned for a second for Brother Zhishui's kidneys. He could have enjoyed it, but now it's been taken by force, a direct pilgrimage.

Just thinking about that scene makes Ye's back ache; she feels the same way...

"Since we have enough kidneys... no, since we have enough Uchiha seeds, let's let our number one Uchiha genius do something more valuable."

"what do you mean……"

"Ah, to cultivate something extraordinary."

……

Uchiha Shisui stared blankly at the familiar ceiling, his whole body moving like a machine as he slowly got out of bed and began to wash up.

In just three months, this genius boy from the Uchiha clan was completely transformed into a seed-planting machine for Kirigakure.

Despite having plenty of nutrition every day, his body became increasingly thin, even more so than Nagato, who was drained of nutrients by the Gedo Statue.

His eyes were deep-set, his cheeks were sunken, he had heavy dark circles under his eyes and pale lips, and his legs trembled even when he walked.

Everything indicated that this young boy's body had reached some kind of limit.

The lavish meal tasted like cardboard to Shisui. After finishing his meal, Shisui drank two more bottles of nutrient solution before heading towards the door, addressing the female ninja member standing there.

"Let's go."

"Don't rush, you have a different task today."

"Wha, what!"

The voice of the female ninja from the Anbu made Shisui stop in his tracks.

The nearly exhausted boy suddenly turned around and looked at the female ninja ANBU. His numb and dim eyes seemed to light up at this moment!

"Whatever the mission is... I don't care, as long as it's not *that* kind of thing, anything is fine!"

"Hehe, I hope you'll still have that look on your face later."

The female ninja gave a faint smile and quickly led Shisui to a dark passage.

The pitch-black environment carried a chill, and Shisui couldn't help but have some guesses.

When he reached the end of the passage and saw the ninja standing at the door, his pupils constricted sharply.

"You, you are!"

"A genius of the Uchiha clan, huh? I've heard you've made great contributions to the village these past few months."

Kushimaru Kurishari crossed his arms and opened the door behind him: "I hope you can handle it. The Mizukage has high hopes for you."

A forbidden experiment!

Looking at this person who had long been dead, yet was now standing alive before him, Shisui already knew what awaited him next.

That makes sense. He had been exploited for three whole months. Even with adequate nutrition and the presence of medical ninjas, he had already reached his limit.

Moreover, perhaps because Kirigakure found his efficiency too slow and unable to better meet the needs of sowing, in the following weeks, these Kirigakure members directly made him abandon natural mating and instead squeezed out a large number of seeds for artificial cultivation through direct learning.

Right now, Kirigakure has no shortage of Uchiha seeds; his only value might be those forbidden experiments.

The light in Shisui's eyes gradually faded, but a sense of relief appeared in them.

Perhaps it wouldn't be so bad to die like this...

"You'd better hold on for me, Shisui-kun."

Wearing the robes of the Fourth Mizukage, Mizuki Yoru smiled as he watched Shisui walk in: "If the experiment fails, I might, as a way of mourning you, make a film of your performance during this period and send it to the publishing company, so that everything you've done can become a timeless masterpiece of art."

"W-what! No! Absolutely not!"

Shisui, who had been thinking of getting rid of the nightmare, felt a chill run down her spine when she heard Mizukiyo's words. The scene was even more terrifying than a nightmare.

"I will definitely persevere. No matter what you do, I will cooperate with you. Please don't do such a thing!"

"That depends on your performance."

"If your performance is truly outstanding, then not only will I not send out your artistic works, but I will also entrust you with important responsibilities and allow you to have a second spring in Kirigakure."

"What do you think of the position of head of the Uchiha clan in Kirigakure?"

Night revealed a gentle smile, and chakra flames appeared at his fingertips, suddenly landing on Shisui's lower abdomen.

"The Four Symbols Unlocked!"

"Well!"

Shisui's body suddenly arched, but then the chakra that had been sealed within him for more than three months surged out again, finally giving his weak and depleted body a new vitality.

The restoration of his power did not bring Shisui much joy. He knew very well that the reason why Mizuki Yoru released his chakra was because what he was about to face would be extremely terrifying!

but……

"bring it on!"

Zhi Shui's tone was resolute, and his face showed a look of utter desperation.

"Don't rush. Before that, I hope you can hand over your father's other eye so that we can conduct our next experiment."

"What... I understand."

Shisui bit her lip, formed hand seals, and landed heavily on the ground: "Summoning Jutsu!"

The next moment, a ninja cat with pointed ears and messy fur like a raccoon appeared in front of everyone.

"This chakra... is it Shisui? You weren't already..."

"Stop talking, Tahi, give me that eye." Shisui interrupted the ninja cat named Tahi, speaking hastily.

The ninja cat paused slightly, then noticed its surroundings. A look of terror immediately appeared on its face: "I, I understand, meow! Please don't attack me or Shisui-kun, everyone from Kirigakure, meow!"

The cat's furry paws rummaged around on its body and pulled out a glass jar containing a three-tomoe Sharingan eye from who-knows-where.

"Here you go, meow."

"Thank you for your trouble, Tian Huo. Now you can go back."

"Don't rush, we should do things cleanly, shouldn't we?"

Shisui patted the ninja cat named Tahi, and just as the ninja cat was about to leave, it was stopped by Yoru.

The ninja cat shrank back in fear and subconsciously looked at Mizuki Yoru, but what it saw was a spinning four-cornered windmill!

"Illusion! Sharingan!"

Memory wiped!

"Alright, Shisui, you can cancel the summoning technique now."

"Yes."

Looking at the impeccable Minazuki Yoru, Shisui reluctantly canceled the summoning jutsu, sent Tahito, whose memories had been erased, back to him, and handed the three-tomoe Sharingan to Minazuki Yoru.

"The eyes you wanted."

"No, these are your eyes."

Night shook his head: "I don't know if it's because of emotions or some other messy thing that you're unwilling to accept your father's left eye and have both eyes evolve into the Eternal Eye. But now, I need you to transplant this eye, and at the same time, I will return your original Eternal Eye to you."

"This is the foundation for what we're going to do next, so please lie down on the operating table first."

"……Yes."

Shisui opened his mouth, as if to say something, but ultimately he obediently lay down on the operating table, where Yukiko Touna, who was already prepared, removed his ordinary eyes. Then, she transplanted the three-tomoe Sharingan belonging to Uchiha Mitsukaze, as well as the Eternal Mangekyou Sharingan that fused the power of his father and himself, onto his eyes.

Shisui felt the long-lost power of the Sharingan, but he couldn't feel happy at all...

Chapter 112 The Power of All Things, An Attempt to Evolve the Rinnegan

After the two Sharingan were transplanted, Yukiko began to monitor Shisui's condition. She also installed various auxiliary instruments on Shisui's body to test blood pressure, blood oxygen, heart rate, cell activity, and so on, to ensure that nothing unexpected would happen to him.

Once everything is ready, all that's left is to wait patiently.

Waiting for that eye belonging to Uchiha Mitsukaze to evolve into the Eternal Mangekyou Sharingan in Shisui's eyes!

After studying the Sharingan for some time, their understanding of it has greatly deepened.

The so-called fusion of the Eternal Mangekyou Sharingan involves having the owner of either of the two pairs of Mangekyou Sharingan belonging to a blood relative act as the host during the fusion, providing a stable and continuous supply of chakra for the fusion of the Eternal Mangekyou Sharingan, allowing the Mangekyou Sharingan in the eye socket to devour the ocular power of the previous pair of Mangekyou Sharingan that originally remained in the body.

When the two eye powers were fully merged, the Eternal Eye was born.

(Some say it's the power of Indra, since Madara and Sasuke both possess the Eternal Eyes in the original work. But considering that the Tenseigan can be born by infinitely stacking the Byakugan, it doesn't actually require any special power; brute force can work wonders.)

(Some say that the Uchiha clan has four eye sockets, and that they have to fit two eyes into one socket. This is because during the Sasuke-Itachi battle, the meridian point diagram released by Itachi showed four eye sockets, with the top two empty. However, I think this represents ocular power, rather than actually fitting two eyes into one socket...)

Therefore, even though Shisui's kaleidoscope is still in Yoru's eyes, Shisui can still awaken the Eternal Eye, because the 'source' of the eye power is still within Shisui's body.

So here's the question: if two people who have both activated the Kaleidoscope at the same time exchange eyes, can they activate two pairs of Eternal Eyes?

It's hard to say, mainly because there are no case studies or experimental targets.

……

After the three-tomoe Sharingan was transplanted, the crimson three-tomoe Sharingan began to spin rapidly in Shisui's eye socket.

In just a few breaths, the three-tomoe Sharingan transformed into a uniquely shaped Mangekyou Sharingan.

As expected, Uchiha Mitsukaze awakened the Mangekyou Sharingan before his death, which is why Shisui's right eye evolved into the Eternal Eye after transplanting Uchiha Mitsukaze's eye.

As for what kind of eye technique this kaleidoscope contains, Ye doesn't know yet.

The crimson kaleidoscope continuously absorbed the remaining power of Kotoamatsukami within Shisui's body, rotating within his eye sockets.

The fusion process of the Eternal Eye takes some time, which is normal. In the original work, Sasuke lay in bed for a considerable period of time when fusing the Eternal Eye.

But stopping water is different.

Shisui, who already possesses an Eternal Eye, will have his Eternal Eye born much faster due to the synchronization between Sharingan users.