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Before Sarutobi Hiruzen could react, Uchiha Izumi's Rasengan had already reached him. The blue chakra sphere pierced through Sarutobi Hiruzen's weakened arms and knocked him away.

Sarutobi Hiruzen was already old, and his body was not as strong as before. He had consumed a lot of energy in the previous battle, and after being hit by the Rasengan, his whole body smashed into a big hole on the ground. Blood kept coming out of his mouth, and it was obvious that he was seriously injured. In a short period of time, let alone recovering his fighting ability, he couldn't even stand up.

"Hokage-sama!"

Seeing Sarutobi Hiruzen being knocked away, Uchiha Itachi and a group of ANBU elites immediately gave up the siege on Fukuhara Hiroyo and others, wanting to save their Hokage. But before Uchiha Itachi and others took a few steps, Uchiha Izumi suddenly stretched out his right hand, formed a seal with one hand, and whispered:

"burst!"

Boom!

A huge explosion was heard from underground. It was an explosion in Fukuhara Hiroyo's underground laboratory. It turned out that before he arrived, Uchiha Izumi had already broken the wall of the laboratory, filling the entire laboratory with flammable and explosive natural gas. At the same time, he had arranged the detonating talisman, waiting for the right time to explode immediately.

At this time, the trees around were created by the Wood Release of the First Hokage. After Uchiha Izumi detonated the basement, the flames of the burning natural gas instantly ignited most of the surrounding trees, and the raging fire spread instantly. Those Anbu ninjas and Uchiha Itachi were caught off guard and were immediately swept into the high temperature of the flames. Only Kabuto Yakushi was prepared and used Water Release to build a barrier around him to block the aftermath of the explosion for Orochimaru and others.

But the explosion came and went quickly. After the surrounding trees were burned out, the flames gradually died out under the heavy snow. However, most of the Konoha elites who were affected by the flames were burned to charcoal. Only a few ninjas who reacted quickly barely escaped with their lives.

As for Uchiha Itachi, he used Susanoo at the critical moment. Relying on the protection of Susanoo, Uchiha Itachi did not suffer serious injuries. However, Susanoo put too much pressure on the Mangekyō. At this moment, Uchiha Itachi's eyes were bleeding and his vision was much worse than usual.

Seeing so many Konoha elites being swept away by Uchiha Izumi, Sarutobi Hiruzen looked at Uchiha Izumi and said with gritted teeth:

"Uchiha Izumi!"

Hearing Sarutobi Hiruzen's angry voice, Uchiha Izumi felt like she was listening to heavenly music. She immediately wanted to make another effort and kill Sarutobi Hiruzen. But just as she was about to do it, Uchiha Itachi controlled Susanoo and rushed towards Uchiha Izumi. The huge Susanoo wielded the Ten-fisted Sword, and with one strike, it was going to seal Uchiha Izumi in the illusion.

Seeing this, Uchiha Izumi had no choice but to open his Mangekyō and cast Susanoo as well. So behind the ruins, two huge figures constructed by chakra collided. Uchiha Izumi's Susanoo held a long sword and swung away the attack of the Tenken Sword, but was blocked by the Yasakami.

"Is this the power of the Mangekyō Sharingan?" Kabuto Yakushi exclaimed as he watched the giants colliding not far away.

Beside him, Orochimaru looked at Susanoo with eyes full of covetousness.

Chapter 37 Sunk Costs

The collision between the Susanoos is naturally earth-shattering, but the consumption for the users is also enormous.

Uchiha Itachi and Uchiha Izumi had just used Susanoo for less than a minute when their eyes were full of blood. Their pupil power was rapidly depleted and their vision was also declining. Uchiha Izumi clearly felt that everything in front of him became blurry, as if he had severe myopia.

Compared to Uchiha Izumi, Uchiha Itachi opened the Mangekyō earlier and used it more often, so his vision naturally declined more seriously. If Uchiha Izumi was severely myopic, Uchiha Itachi's eyes would be close to blindness at this moment due to the rapid consumption of Susanoo!

It can't go on like this!

Sarutobi Hiruzen saw the performance of the two on the battlefield and was keenly aware that Uchiha Itachi had already fallen behind. If the stalemate continued, Uchiha Itachi, whose pupil power was over-consumed, would surely be killed by Uchiha Izumi. By then, not only Uchiha Itachi, but he himself would also die without a burial place. Thinking of this, Sarutobi Hiruzen made up his mind and ordered Uchiha Itachi:

"Itachi! Stop tangling with Uchiha Izumi and use Amaterasu to attack Uchiha Izumi from behind!"

what did you say?

Hearing Sarutobi Hiruzen's order, Uchiha Itachi and Uchiha Izumi were both startled. Uchiha Izumi looked back, seeing the lights of thousands of houses shining like stars under the gray sky, and shouted angrily:

"Sarutobi Hiruzen, you bastard! Do you have any humanity left?"

Uchiha Itachi also said:

"Hokage-sama, behind Uchiha Izumi is the city center of the Fire Country's capital! If Amaterasu is launched against such a densely populated area, the consequences will be disastrous!"

Because the university covers a large area, several colleges in the capital of the Land of Fire are located in the suburbs of the capital. As a university teacher, Fukuhara Hiroyo's residence is naturally in the edge of the capital. And when he knew that Konoha was about to come, Fukuhara Hiroyo also used means in advance to drive away all the civilians around his home. Otherwise, the ninja war just now would inevitably be accompanied by a large number of civilian casualties.

Unlike the sparsely populated suburbs, the capital of the Land of Fire is one of the most prosperous areas in the Ninja World, and the population of the city center is not much different, even if it is not a million. Ignite the unextinguishable flame of Amaterasu in such a densely populated place, and the casualties caused are simply incalculable!

"So what?" Sarutobi Hiruzen shouted angrily:

"Uchiha Itachi, don't forget the Will of Fire of our Konoha! We must fight for Konoha and to protect those important people. As for these people who have nothing to do with Konoha and are insignificant to us, why do you care about them?"

The will to protect Konoha is actually the will to hurt people who are not from Konoha.

The will to protect important people is actually the will to hurt unimportant people.

The light called the Will of Fire can only illuminate the small village of Konoha. As for the people outside of Konoha, they are just the oil that supports the flame.

At this moment, Uchiha Itachi was in a dilemma. He couldn't convince himself to sacrifice hundreds of thousands of civilians to protect Konoha, but he didn't want Sarutobi Hiruzen, the third Hokage, to die here. On one side was the important Konoha, and on the other was the chain of humanity. Uchiha Itachi was once again caught in a painful choice.

At this moment, Fukuhara Hiroyo's words once again echoed in his ears:

Unless all the people in this world except Konoha are killed, the bloody massacres in various parts of the ninja world in the name of "protecting Konoha" will never stop.

Is this really the case?

I just want to protect the village where I live and maintain the stability of the world situation.

Why does such a simple will require such a huge price?

……

At the critical moment when Uchiha Itachi hesitated, Sarutobi Hiruzen said again:

"Have you forgotten the Uchiha clan and the sacrifices of your parents? Do you want their sacrifices to go to waste?"

Sarutobi Hiruzen has been the Hokage for decades, so he knows what Uchiha Itachi is thinking. So at this critical moment, he mentioned the Uchiha clan and Uchiha Itachi's parents. This is certainly not to use the demise of the Uchiha clan to awaken Uchiha Itachi's good nature, but to remind Uchiha Itachi that you have paid too much sunk cost to protect Konoha!

Parents, clan members, blood relatives, beloved ones... In order to protect Konoha, Uchiha Itachi has given up almost all the important things. Now he is like those people who have been cheated of their money. He has paid too much sunk costs before, and he can't accept the fact that he has been cheated. In order to get psychological comfort, he can only insist that his path is correct, and then continue to pay more for this so-called correct path.

And now, what the old liar Sarutobi Hiruzen wants him to abandon is Uchiha Itachi's last bit of humanity.

He wanted Uchiha Itachi to become a complete killing machine, the kind of butcher who would kill millions of people without hesitation to protect Konoha! Because Sarutobi Hiruzen knew that Uchiha Izumi was a disciple of Fukuhara Hiroyo, and he probably inherited the mental illness of the Senju clan who could sacrifice for worthless civilians. He wanted to use hundreds of thousands of civilians in the capital as hostages to threaten Uchiha Izumi to let him and Uchiha Itachi leave.

Facts have proved that Sarutobi Hiruzen is indeed an excellent Hokage.

After his reminder, Uchiha Itachi immediately remembered his parents who he had killed, as well as the dead Uchiha clan members. The pain of the past once again lingered in Uchiha Itachi's heart, making him unable to accept the fact that his choice was wrong. So he could only choose to deceive himself, muttering:

"This is to protect Konoha, this is to maintain world peace! This is to protect Konoha, protect Konoha..."

As he said this, the Susanoo controlled by Uchiha Itachi condensed a large ball of Amaterasu's black flames and threw it straight towards the city center behind Uchiha Izumi.

Oh no, Uchiha Izumi had no intention of fighting with Uchiha Itachi at this point, and quickly used his Mangekyō Sharingan to block Uchiha Itachi's attack with the help of Susanoo. Susanoo is a chakra condensation, and even if it is burned by Amaterasu, it will not hurt Uchiha Izumi himself. But just as Uchiha Izumi took the attack, Uchiha Itachi launched another Amaterasu attack, and more than a dozen Amaterasu black flames flew straight to the city center.

In a hurry, Uchiha Izumi could only barely take five or six shots, and the remaining Amaterasu's black flames naturally all fell on the city center. The originally brightly lit and peaceful city center immediately turned into a living hell at this moment. The black flames burned everything in the city center crazily, and the miserable cries of people came from afar, and Uchiha Izumi's soul was trembling when he heard it.

However, no matter how angry Uchiha Izumi was, he could do nothing. While Uchiha Izumi was trying to stop the black flame, Uchiha Itachi had already taken Sarutobi Hiruzen and escaped from here with the help of Susanoo. Watching the two men leave, Uchiha Izumi secretly vowed:

Sooner or later, I will make you scum pay the price!

Chapter 38 Madara-sensei's words

Susanoo gradually dissipated, and Uchiha Izumi immediately covered her eyes. The previous battle had put a huge strain on her eyes, and now that she was relaxed, fatigue and pain surged into her eyes, causing her to subconsciously close her eyes and rub them constantly.

"Miyano, are your eyes okay?"

Seeing the battle was over, Fukuhara Hiroyo came to Uchiha Izumi and asked. Although he knew that Miyano Shiho was just a pseudonym for Uchiha Izumi, Fukuhara Hiroyo still used to call her Miyano, just like Uchiha Izumi and others were used to calling him Teacher Fukuhara.

"It's okay, you're not blind yet." Uchiha Izumi said.

"Eyes?" Orochimaru, who had lost his arm, asked curiously, not caring about his own injuries.

"I heard that if you overuse the Mangekyō Sharingan, you will go blind. Is this true?"

"Of course it's true, otherwise do you think such powerful power comes without a price?" Uchiha Izumi said unhappily.

"But as far as I know, Uchiha Madara is also the owner of the Mangekyō Sharingan, and he doesn't seem to have any problems with blindness, right?"

"That's because he stole his brother's eyes and used his blood relative's eye power to obtain the Eternal Mangekyō."

Uchiha Izumi did not hide anything and explained directly. Fukuhara Hiroyo on the side also said:

"Yes, it was because of his brother Izuna's eyes that Madara-sensei gained eternal sight. But Madara-sensei did not steal the Sharingan. It was Izuna-sensei who offered his Sharingan voluntarily. After all, it was the cruel Warring States Period, and someone had to sacrifice for the survival of the family."

“Is that so…?”

Hearing Fukuhara Hiroyo say this, Orochimaru was obviously disappointed. In fact, he just wanted to take advantage of Uchiha Izumi's over-consumption and take him down unexpectedly. After all, Uchiha Izumi opened the Mangekyō Sharingan, possessed the strength of a Kage, and also obtained the bloodline of the Uzumaki clan from Fukuhara Hiroyo. It was really a rare and excellent body.

But who would have thought that Uchiha Izumi's Mangekyō would actually cause blindness, and she, who had no blood relatives, could not evolve her eyes into a Mangekyō. This huge defect made Orochimaru instantly lose interest in seizing Uchiha Izumi's body. He turned his target to Uchiha Sasuke, Uchiha Itachi's younger brother.

In fact, Uchiha Izumi could guess most of what Orochimaru was thinking. The reason why she told him about the Eternal Mangekyō so straightforwardly was to stop Orochimaru from coveting her. After all, her soul was originally the product of the fusion of two people, and she really didn't want to be associated with such a disgusting soul like Orochimaru.

Although Uchiha Izumi's body no longer appeals to Orochimaru, she is still the one who has opened the Mangekyō Sharingan. Orochimaru said again:

"Uchiha Izumi, are you interested in making a deal with me?"

"What's the deal?"

"Tell me what I know about the secrets of the Sharingan, and I can give you a corresponding reward."

Hearing this, Uchiha Izumi knew that Orochimaru was probably obsessed with the Uchiha clan's Sharingan, just like in the original story. The reason why he was asking about the Sharingan was probably because he had set his eyes on Uchiha Itachi's brother, Uchiha Sasuke. He wanted to seize Uchiha Sasuke's body, and then seize Uchiha Itachi's Mangekyō, so as to obtain the terrifying power of the Eternal Mangekyō like Uchiha Madara.

Uchiha Izumi was happy to see this happen. Although she knew that Uchiha Sasuke, who was inhabited by Indra's chakra, would not be taken away from his body, she also hoped that Orochimaru would cause more trouble for Sasuke. It would be even better if he could bewitched Sasuke like in the original work, causing Uchiha Itachi and his brother to go their separate ways, or even kill each other.

So Uchiha Izumi slowly opened his eyes and asked back:

"I want to sign a spiritual contract with Ryuchido. Can you agree to this condition?"

"Can."

Orochimaru agreed straightforwardly. After all, compared with the Uchiha clan's Eternal Mangekyō, the Ryuchi Cave Summoning Contract was not that important. He immediately ordered Kabuto Yakushi to use his blood to summon the Ryuchi Cave Contract Scroll. Uchiha Izumi did not refuse and directly wrote his name on the Summoning Scroll.

Then, Uchiha Izumi revealed all the secrets about the Sharingan. He even revealed that after obtaining the Eternal Mangekyō Sharingan, if one also obtained the power of the Thousand Hands of the Forest, one could possess the power of the Six Paths Sage, which was comparable to the power of the Six Paths Sage.

After hearing such an important secret, Orochimaru was very excited and thought that this deal was really worth it!

Orochimaru also knew that Uchiha Izumi was so straightforward in revealing such important information just to embarrass himself and Uchiha Itachi. But facing the temptation of the Eternal Mangekyō, Orochimaru didn't care at all. So after completing the transaction, Orochimaru happily left with Kabuto Yakushi.

Seeing this, Fukuhara Hiroyo on the side could not help but remind:

"Miyano, Orochimaru is not a kind person. If you tell him such important information, the ninja world will be in great trouble in the future."

In response, Uchiha Izumi looked into the distance. Looking at the city center that was burning more and more fiercely, Uchiha Izumi sighed:

"Of course I know that Orochimaru is not a good person, but compared to what Konoha has done, what are Orochimaru's evil deeds? Besides, if Orochimaru wants to obtain the Eternal Mangekyō, he will definitely have to make things difficult for Konoha. It is much better to let these evil guys fight each other than to let them join hands to persecute the people."

Fukuhara Hiroyo also looked into the distance and saw that the flames of Amaterasu were burning more and more fiercely, and ordinary people could not extinguish it at all. His eyes became solemn and he gradually made up his mind.

At this time, Uchiha Izumi asked again:

"Oh, by the way, Mr. Fukuhara. Just now I heard you call Uchiha Madara "Mara-sensei"? Are you a disciple of Uchiha Madara?"

"I guess so." Fukuhara Hiroyo nodded.

"However, I didn't study with Madara-sensei for a long time, and what I mainly learned was not ninjutsu, but various biological knowledge."

At this point, Fukuhara Hiroyo smiled and said:

"You may not believe it, but Uchiha Madara, who is considered wild and violent by the world, is actually a very good scientist. In terms of human biology, Madara-sensei is not inferior to Tobirama-san. It was also because of his influence that I embarked on the path of medical research."

"Oh, by the way, Miyano. Since you are still willing to call me Mr. Fukuhara, are you interested in listening to the last few words from this old man? These words were told to me by Mr. Madara, but I was too young at the time and didn't realize the weight of these words. It was not until I got older these years that I gradually began to understand them."

Listening to the tone of Fukuhara Hiroyo's words, Uchiha Izumi was secretly puzzled and thought:

You sound like you're making plans for your last days. I see that although you're seriously injured, your life isn't in danger. You should be able to live another two years.

However, Uchiha Izumi still said:

"Once a teacher, always a teacher. If you have anything to teach me, just tell me directly!"

"Well, Miyano, you have to remember what I'm going to say..." Fukuhara Hiroyo's tone gradually became serious:

"Bloodline doesn't bring true power, knowledge does!"

"I know you approached me because you wanted to obtain a more powerful bloodline through gene editing technology. But I also want to remind you that the easier it is to obtain power, the easier it is to lose it. The so-called bloodline is nothing more than the power created by others with the help of knowledge! Since it is someone else's knowledge, it will naturally be taken back by others. So if you want to obtain real power, the safest way is to accumulate your own knowledge and build a power that belongs only to you!"

"Do you understand?"

Chapter 39 The sun also rises

Bloodline does not bring real power, knowledge does!

Fukuhara Hiroyo's short words were like a bolt from the blue to Uchiha Izumi. In just a moment, Uchiha Izumi realized the essence of the so-called bloodline.

The so-called bloodline, after all, is nothing more than a few fixed genetic information in the cells. As long as you know the genetic information encoding of various bloodline limits and use gene editing technology, anyone can easily possess various bloodline limits. So bloodline is actually worthless, and the knowledge that can change bloodline is the most powerful power!

And it's not just bloodline. What kind of power can be created if other kinds of knowledge are combined with the power of chakra?

For example, the shadow clone created by the Shadow Clone Technique has only a negligible mass, but is as heavy as a normal person. If this characteristic can be brought to its extreme, can it be possible to create a shadow clone with infinitely small mass but infinitely large weight? Once such a shadow clone appears, it will inevitably collapse due to its excessive weight. Doesn't this mean that the ultimate Shadow Clone Technique can create a black hole with one's hands? If this level can really be achieved, what is the so-called blood limit?

The same is true for space-time ninjutsu. If the coordinates of space teleportation can be established on the sun, then the opponent can be directly teleported to the center of the sun, and even the Ten-Tails will be vaporized instantly!

The other thing is the conversion mechanism between matter and chakra. If we can figure out why humans can refine chakra and how chakra is converted from matter to energy, then anyone can theoretically have nearly unlimited chakra. Isn't this more cost-effective than Jinchūriki and first-generation cells?

In addition, there are transformation techniques, substitution techniques, and so on.