Naruto: The Strongest Sage.

Aoba walked over to Sasuke and without saying anything, he leaned over and sat down next to him.

Sasuke looked at Aoba in surprise. He didn't know why Aoba-sensei would appear here.

"A combination of Sharingan, genjutsu, and mental power. You can think of it as me using a genjutsu on you and entering your mental world."

"..."

The two were silent again, and then watched everything that happened in front of them. They couldn't change these things, they could only watch.

Looking at the young Sasuke, questioning Uchiha Itachi. Looking at Uchiha Itachi speaking indifferently, in order to test his own tolerance.

Watching young Sasuke being knocked down by an illusion and lying on the ground unconscious.

Then everything in front of him disappeared, and young Sasuke rushed in from the door again. Everything started from the beginning again.

Even a time traveler like Qingye couldn't help but feel a little angry when facing this scene. Describing Uchiha Itachi as a beast was simply an insult to the beast.

Even an animal couldn't do what was happening before our eyes.

"Why am I so weak? Mr. Aoba, I've been practicing very hard. But why am I still so far behind him?"

Sasuke's sudden words startled Aoba.

"This world is always cruel. Good people are not necessarily strong, and bad people are not necessarily without talent. Remember I told you? Uchiha Itachi is almost the perfect template for a ninja. In the three aspects of ninja, body, and illusion, there is no flaw at all. He is a devil, but he is also a genius. This is the fact you need to accept."

"Then how can I defeat him? He is already so powerful. How can I possibly catch up with him?"

Aoba finally understood why Sasuke was so immersed in the spiritual world that he couldn't leave. Because he doubted himself. If he doubted his own abilities and talents, he would never be able to defeat Uchiha Itachi.

"Why can't you win? Do you really think that your talent is weaker than Uchiha Itachi's?"

"Teacher Aoba, you don't need to comfort me. I have seen the gap between him and me. My talent is simply not comparable to his."

"No, Sasuke. You only see the surface. But now that things have come to this, I shouldn't hide anything anymore.

Do you know why Uchiha Itachi must hurt you in this way?"

"For the Sharingan? For people of our Uchiha clan, the power of the Sharingan will be enhanced after being mentally stimulated. He wants my eyes."

"Yes, that's the reason. He wants to stimulate you and make you open the Mangekyō. In this way, the value of your eyes will increase a hundredfold. But there is actually a hidden reason. Do you know that the Mangekyō of your Uchiha clan actually has a huge disadvantage?"

"What shortcomings?" Sasuke was attracted by Aoba's words.

"If you use the kaleidoscope too much, your eyes will go blind."

"...So, Uchiha Itachi..."

"Yes, his kaleidoscope was activated very early. So, his eyesight should have been affected now."

"Is that why he wants my eyes?"

"Yes, there is a secret of the Uchiha clan's Mangekyō. If the Mangekyō of blood relatives merge with each other, the Mangekyō will be further developed and become the Eternal Mangekyō. In this way, the danger of blindness will be completely avoided."

"So that's how it is. He wants to merge my eyes into one to create the Eternal Kaleidoscope?"

"Yes, that should be the case."

"But even so, it doesn't help me defeat him. I can't defeat him with this information. Should I wait until he is blind before taking revenge?

No, I want him to watch me die. I want him to watch me kill it."

"I understand your feelings. But have you ever thought about one thing? You have experienced so many excitements, why didn't you open the kaleidoscope?"

"......" This question made Sasuke silent.

"I don't understand it either. I'm already so miserable and angry. But I just can't get over it. I don't understand why."

"Don't doubt yourself, Sasuke. I actually have an idea. I think it's your body protecting you."

"What do you mean?"

"What it means is that opening the Mangekyō too early is very likely to cause a huge burden on the body. I noticed one thing when I fought with Uchiha Itachi before.

Although he concealed it almost perfectly, I could still detect some subtle problems. There was something wrong with Uchiha Itachi's body."

"There's a problem. You said he's sick?"

"Yes, I think he is very likely suffering from some kind of blood disease. Don't forget, I am the deputy director of the Konoha Research Institute. I am a professional in this area.

At the same time, you know, I have the Sharingan myself. I have done a lot of research on the Sharingan.

After the Sharingan was transplanted, both Kakashi and I had to bear the tremendous pressure brought by it. It took me a lot of effort to solve this problem.

At first I thought it was because we were not from the Uchiha clan. But later I found out that it was not the case. At least it was not the only reason. Because the complexity of the Sharingan itself would inevitably bring a huge burden to the body.

This burden would reach its peak after opening the Mangekyō. Itachi opened the Mangekyō too early. At that time, no matter how talented he was, his body functions had not yet fully developed, and it was absolutely impossible for him to perfectly withstand the pressure brought by the Mangekyō. "

"Aoba-sensei means that Uchiha Itachi contracted the Bloodstain Disease due to the stress of the Mangekyō on his body?"

"That's right, although it's just an inference. But through my research and previous experience, I'm 70% to 80% sure that this is the case."

"What does that have to do with my talent?" Sasuke still didn't understand what Aoba meant. The second pillar's understanding of this aspect was really average. This kid was a pure fighter.

"Don't you understand, Sasuke? Biologically speaking, as humans, we are a very well-evolved species. Every organ in our body is useful to us. No species would evolve an organ that is harmful to itself.

According to this theory, does the Mangekyō Sharingan not conform to the concept of biology? "

"..."

Seeing Sasuke's confused look, Aoba sighed. It was really hard to talk to a poor student.

"What I mean is that, logically speaking, when the Uchiha clan's Mangekyō is activated, there should be a special self-protection mechanism.

When your body is fully developed, your physical endurance is fully up to standard, and your mental strength is accumulated enough, open the Mangekyō. In this way, the Mangekyō Sharingan can fully match the physical body.

But for some reason, you lost this self-protection mechanism."