Naruto, my father's name is Uchiha Madara.

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He paused, looking at the genuine worry on the young Naruto's face, a complex look of reminiscence on his own.

"Regenerating eyes..."

The adult Naruto muttered to himself, recalling the scene from the end of the Fourth Shinobi World War many years ago.

At that time, he received the power of Yang from the Sage of Six Paths.

It possesses a power that is almost capable of creating life, and can even conjure flesh and blood out of thin air and reshape limbs.

It was with that power that he was able to successfully restore Kakashi-sensei's lost eye.

Unfortunately, that Yang power belonging to the Six Paths level receded like the tide after the war ended, returning to nature.

Since then, he has never been able to do something so miraculous again.

A hint of regret flashed in his eyes, but soon another possibility replaced it.

"Although it cannot be regenerated,"

The adult Naruto's eyes lit up as he looked at Sasuke: "But... reinstalling an eye might be feasible!"

He thought of someone—Tekuse.

This person was a senior researcher in the Konoha Science Ninja Tools Team about three years ago. He was very talented, but he went astray in his research direction.

He attempted to weaponize scientific ninja tools and secretly colluded with external forces, intending to profit from the war by selling advanced scientific ninja tools.

After the incident was exposed, he was resolutely expelled from the team by Fang Zhu, the class leader of the Scientific Ninja Tools Class at the time.

Although Tekuse's character was questionable, one of the technologies he spearheaded left a deep impression on Hachisuke.

According to Fang Zhu's later report, the artificial eye developed by Tekuse was far more sophisticated than any similar product on the market at the time.

It can perfectly simulate all the physiological functions of the human eye, providing clear vision, and has no rejection reaction when connected to nerves.

Even more astonishingly, it is theoretically capable of simulating bloodline limits!

This discovery caused quite a stir within the Science Ninja Tools Team at the time.

It is precisely because of its immense and dangerous potential strategic value that Tekuse's betrayal seems all the more unforgivable.

The adult Naruto immediately contacted the current head of the Science Ninja Tools Team via communicator: "Bring Tekuse all the research data on 'artificial eyes' and come to the Hokage's office right now!"

Not long after, a figure, even more rounded than three years ago, ran into the Hokage's office, panting heavily. It was Fang Zhu.

He wiped the sweat from his forehead and looked somewhat nervously at the two people in the office... uh! Two Hokage, one big and one small.

"Seventh Generation Lord, you wanted to see me? Is it about... that project with Tekuse?" Fang asked cautiously.

The adult Naruto cut straight to the point: "I need you to explain in detail what that 'artificial eye' can actually do now? Especially the part about simulating bloodline limits."

When the topic turned to his field of expertise, Fang Zhu immediately perked up, a proud look appearing on his chubby face: "Seventh Generation, after several years of refinement and based on the core data left by Tekuse, this technology is now very mature!"

He explained in detail: "This artificial eye uses a special chakra-conducting bio-alloy and nanoscale simulated neural connection technology."

"It can not only see like a normal eye and transmit visual signals to the brain, but it also integrates an extremely complex chakra circuit simulator."

"By inputting a specific, massive chakra data model,"

Fang Zhu's voice carried a hint of excitement: "It can activate the corresponding simulation circuit, thereby functionally 'reproducing' a specific bloodline limit!"

"In theory, as long as the data is complete and accurate enough, even... the Rinnegan is not impossible to simulate!"

"The Rinnegan?!" The young Naruto exclaimed in shock, feeling his understanding of the world being challenged.

Fang Zhu quickly added, wiping his sweat: "Simulating bloodline limits, especially high-level eye techniques, requires an extremely terrifying amount of chakra."

"Moreover, simulation is still simulation. It may not be completely identical to a real bloodline limit, but it can definitely reach a considerable level of practical combat skill!"

"Chakra is not a problem."

The adult Naruto and the young Naruto spoke in unison, exchanging a glance and seeing the affirmation in each other's eyes.

Although the adult Naruto had lost the Nine-Tails, his innate enormous chakra, combined with the fact that the young Naruto was a "humanoid tailed beast," meant that his need for chakra was negligible.

"What about the data?" the adult Naruto pressed. "Do we have Sasuke's Rinnegan data?"

Fang Zhu nodded affirmatively: "As an important fighting force for the village, we have collected basic physical data and some data on his eye techniques within the permitted scope in the past."

"Especially his Rinnegan, although it cannot completely replicate the power of the Six Paths contained within it."

"But we do have the basic form, the fundamental pupil power fluctuations, and some energy models of core techniques such as 'Heavenly Hand Power'!"

"Based on this, we can completely customize a pair of exclusive 'Rinnegan prosthetic eyes'!"

"Great!"

Without delay, after obtaining the consent of Sasuke and Sakura, preparations for the transplant surgery began immediately.

The surgery was performed by Fang Zhu himself, with Xiao Ying participating as the medical supervisor throughout the process.

The process was lengthy and meticulous, requiring a perfect connection between the artificial eye and the complex visual nerves and chakra pathways within Sasuke's eye socket.

The waiting time always seems exceptionally long.

Young Naruto paced back and forth outside the operating room, more nervous than if he himself were injured.

Although the adult Naruto appears calm on the surface, his clenched fists betray his inner turmoil.

Several hours later, the operating room lights finally went out.

Fangzhu and Xiaoying walked out looking exhausted but filled with the joy of success.

"Success!"

Sakura took off her mask, a relieved smile on her face: "The connection went very smoothly, and the prosthetic eye is functioning stably!"

After a long while, the anesthesia wore off, and Sasuke slowly opened his eyes in the ward.

The crowd immediately surrounded them.

Sasuke's previously empty left eye socket was now filled with a brand new eye.

The eyes had a deep purple base color, with clear whites and a ring of clear tomoe patterns slowly emerging and settling around the pupil.

It is the Rinnegan with tomoe, which is completely different from his right eye, the Eternal Mangekyou Sharingan, yet exactly the same as the eye he once lost!

"How is it, Sasuke?" the adult Naruto asked eagerly, his tone filled with concern and anticipation.

Sasuke slowly turned his newly grown left eye, getting used to the long-lost feeling of "seeing with both eyes".

He raised his hand and gently touched the area around his left eye, feeling the subtle texture of the metal and biological materials that were perfectly integrated with his flesh and blood.

After a moment, he lowered his hand, his tone still carrying that familiar calm:

"It feels... not much different from my eyes before. My vision is clear, and my chakra flows smoothly."

Fang Zhu excitedly added from the side, "Of course!"

"This prosthetic eye was custom-made based on the data of your original eye, Lord Sasuke. We strive to perfectly replicate both its shape and basic function!"

"There will absolutely be no rejection reaction or functional sequelae!"

He pushed up his glasses, his face filled with pride in the technology: "Moreover, precisely because the core data originates from you, its compatibility with your chakra is unparalleled!"

"Given enough chakra, it can perfectly simulate all the abilities of your Rinnegan!"

"In terms of functionality, this is essentially your old eye!"

"So...so awesome..."

After listening to Fang Zhu's explanation, young Naruto looked at Sasuke's eyes, which had become "complete" again.

He was completely stunned, his mouth slightly open, his face filled with disbelief and shock.

He knew that future technology would be advanced and scientific ninja tools would emerge in endless streams, but... even the lost Rinnegan could be "found" in this way?

This is completely beyond his understanding of "ninja tools"!

Has future technology really reached such an unbelievable level?!

Sasuke felt the long-lost sense of balance and abundant eye power emanating from his eyes, and the corners of his cold lips twitched upwards almost imperceptibly.

The lost power has returned in another form, which undoubtedly adds a crucial advantage to the upcoming battle against Shi Luo and the Divine Tree Man.

When I started writing this chapter, I suddenly remembered that there was an artificial eye in the Bonds system that could replicate bloodline limits, so that's how I got Sasuke's missing eye back?

Happy Mid-Autumn Festival to all my brothers and sisters!

Chapter 415 Suspicious Points about Sunflower

Within the space of consciousness, a rare tranquility prevailed.

Minato noticed the Nine-Tails lying on the surface of the huge body of water.

Those enormous tails were unconsciously and somewhat irritably flicking their tails, slapping the water's surface and creating ripples.

This situation has been going on for several days.

"Nine Lama, is something on your mind?"

Minato asked gently, "You seem a little restless lately."

Nine-Tailed Fox lifted one eyelid, a rare look of confusion and uncertainty flashing in its scarlet beast eyes.

It grunted and replied in a muffled voice, "Hmm...it must be my imagination."

“Every time I get close to that little girl named Sunflower, I always feel… I feel like ‘I’ am nearby.”

"You?" Kushina tilted her head in confusion. "But the you in this world is already..."

Ban, unusually interested in the topic, crossed his arms and asked casually, "Speaking of which, do you know how you 'died' in this world?"

Nine-Tails shook its head, seemingly trying to dispel the strange feeling, and its tone became somewhat impatient.

But there was also a hint of arrogance in his statement about his own nature: "To be honest, we tailed beasts don't have that narrow concept of 'death' that you humans have!"

"There is only one reason why I disappeared in this world—he used the 'heavy particle mode'."

"Heavy particle mode?" Minato, Kushina, and Madara all looked at each other with questioning eyes.

"Hmph, it's just like your human's desperate 'Eight Gates Formation'."

Kurama explained, his tone carrying a solemnity reminiscent of discussing a taboo: "It is by consuming the original chakra of our tailed beasts and fusing it to generate new chakra, and through this new chakra, we gain stronger combat abilities."

"However, the result of using it up is that our original chakra will be exhausted, and our tailed beasts' 'existence' will temporarily disappear completely from the world."