Naruto: The Strongest Sage.

Konoha Research Institute entered a state of martial law because Aoba finally finished dealing with the trivial matters of the village and had some free time.

Therefore, he planned to transplant Shisui's second Kaleidoscope as soon as possible.

Although he had already had this experience, he still made full preparations.

The entire research institute was under martial law, and Kakashi, Baiyun, Zao Yueguang, and Gale, several elite jonin, were personally guarding him.

But in fact, Qingye was not at the research institute at all. The actual location of the operation was in the basement laboratory in his home.

Although this laboratory is not as big as the Konoha Research Institute, its facilities are very complete and more than enough to complete an operation.

This time, Tsunade performed the surgery on Aoba personally.

Aoba can do it himself. But he couldn't do it himself before, because few people believed him at that time. Now that Tsunade is here, it's natural to let professionals do it.

Tsunade knew that Aoba had obtained the pair of Mangekyō from Danzo, but she didn't know the ability of the pair of Mangekyō.

This is also the basic rule between ninjas. No matter how good the relationship is, you can't ask the other party about the characteristics of ninjutsu casually. Because for a ninja, information is life.

If Tsunade didn't ask, Aoba naturally wouldn't say it himself.

This time, Tsunade was the lead surgeon, and Yumi assisted her. However, during the operation, Yumi's eyes kept glancing at Tsunade's chest.

"It's so big!" This is what Yumi really thought.

Because of her turbulent life in her early years, her health was not good. Although her breasts were of some size, they were not comparable to Tsunade's.

The most important thing is that Tsunade is the Hokage and lives with Aoba day and night, which makes Yumi feel a sense of crisis.

Although she has not found any signs yet, she knows that Tsunade has a bonus on Aoba.

Because Yumi is well aware of Aoba's little quirk. This man likes strong women... Tsunade can be said to be a perfect match for this characteristic.

This type of operation was no pressure at all for Tsunade, and it was completed in about an hour.

For Aoba, the process was much smoother. The body transformed by Hashirama's cells gave him an extremely strong ability to heal.

With this eye, it was a pair with the original one. It took Aoba less than a day to adapt to the Sharingan in his left eye.

And after gathering both eyes, he could clearly feel that the power of the Sharingan had been completed.

Although he was able to use the kaleidoscope before, it still felt like something was missing. But now, he could clearly feel that the kaleidoscope power of both eyes had merged with each other and entered a completely new state.

At the same time, he finally comprehended one of the most important abilities of Mangekyo, Susanoo.

In this way, Qingye's eyes were replaced with Shisui's Mangekyō. At the same time, he also had Uchiha Kagami's Sharingan in his hand.

And that pair of Sharingan is also a Mangekyō. In other words, Aoba has gathered all the necessary conditions for the Eternal Mangekyō.

However, he has no plans to undergo a second operation for the time being.

In fact, the birth of the Eternal Kaleidoscope Eye itself was very strange. When he read the original plot, he had a question.

Madara was able to achieve the Eternal Mangekyō because he transplanted Izuna's eyes. In other words, Madara took off his own eyes and replaced them with Izuna's eyes.

So the question is, after taking off your own eyes, how can you merge the pupil power with that of another pair of eyes?

But if you don't take off your eyes, you have to have two eyes in one eye socket. That's even more ridiculous, because the human physiological structure does not allow it. The eye socket can't hold two eyeballs.

Qingye deduced that the correct operation should be to replace the eyes. But if this is the case, the term "fusion of pupil power" is actually a bit incorrect.

How can the pupil power come from without eyes? Even if a certain amount of pupil power is preserved in the brain, it is not enough to achieve the eternal kaleidoscope.

Therefore, the root cause is not the fusion of pupil power, but some kind of complementation.

This also corresponds to Qingye's previous speculation. The condition for achieving the Eternal Kaleidoscope is the completion of some kind of genes, blood, and soul.

Another problem is that no matter it is Madara or Sasuke, when they transplanted the eyes of their blood relatives in the later period, it was done when the eyes were almost blind.

Qingye was not sure whether this was a necessary condition. Therefore, he did not dare to transplant directly in the end. Instead, he planned to make plans after figuring out these conditions.

Of course, even so, this Mangekyo is still of great help to Aoba.

First of all, it was another chance for Kotoamatsukami. This was the ultimate trump card, so it couldn't be used casually. Aoba was going to keep it for use against Obito.

After all, Kotoamatsukami is an excellent choice to deal with an opponent like Obito who is physically unstoppable.

He also thought about using it against Nagato. But it was still a little unrealistic. Because Nagato had the Samsara Eye, which was an upgraded version of the Mangekyo.

No matter how strong Kotoamatsukami is, he can't break through this level of suppression. Therefore, the main target is still Obito.

In order to ensure that this trump card would not be leaked in advance, Aoba also made a pair of colored contact lenses in advance to cover his Sharingan.

In addition to Aoba's Sharingan, there is another pair of Sharingan in the laboratory that has matured.

Previously, Qingye gathered the power of five pairs of Sharingan into one pair of eyes, directly destroying eight Sharingan and creating the last pair.

Because there are too many mixed mental and spiritual forces that conflict with each other, so Qingye just lets it go and let it conflict and shuffle on its own.

After a period of time, the mental and spiritual power within the Sharingan had all been offset and dissipated, leaving only the huge and pure pupil power.

In terms of pupil power, this pair of Sharingan is already enough to break through the Mangekyō. But now, its internal pupil power lacks the guidance and projection of spiritual power. Therefore, it is stuck at the last step.

In other words, if this pair of eyes is transplanted onto anyone now, it can develop a new pair of kaleidoscopes based on that person's mental power.

Aoba even speculated whether he could control this kind of mental projection and thus create the kaleidoscope ability he wanted?

Unfortunately, due to Danzo's inaction in his early years, some of the nerves connecting the Sharingan were permanently damaged. Current technology cannot completely repair it.

Therefore, this pair of eyes cannot be transplanted into human eyes.

In this way, the power of this pair of eyes seems to be wasted.

But Qingye would not watch this happen. He had a unique idea for this problem a long time ago, but his skills were not up to standard before, so he never implemented it.

Now that he had Tsunade, he decided to give his idea a try.