Being a rogue ninja is worse than being Hokage.

Naruto, of course, did not keep the promise he had made to Ryuzetsu in the examination room.

The sedatives, laced with hypnotic powder, were inhaled by the prisoners and guards who were resting at the moment.

Needless to say, the hypnotic smoke quickly took effect on the ordinary guards.

Those ninja prisoners who were unable to gather chakra due to being subjected to "Fire Release: Heavenly Prison" also had little ability to resist.

Naruto opened the nearest cell and went inside.

Naruto glanced at the unconscious prisoner in the cell, but instead of approaching him, he took out a sealing scroll from his pocket.

The scroll was unfurled, and the character "屍" (corpse) surrounded by ciphertext was so conspicuous.

This is a sealed scroll used to store corpses.

Naruto placed his hands on the scroll and poured his chakra into it.

The next moment, the character "屍" on the sealed scroll disappeared.

Instead of words, a headless corpse appeared before Naruto—Kabuto Yakushi.

After Naruto extracted some DNA from Kabuto Yakushi, he resealed the body into the scroll.

After putting away the scroll, Naruto approached the unconscious prisoner.

His next step is the Impure World Reincarnation—the second time.

Naruto recalled the steps of the Impure World Reincarnation.

First, a certain amount of DNA must be obtained from the deceased who needs to be resurrected through the Impure World Reincarnation.

Secondly, living people were used as sacrifices, serving as containers for the reincarnated.

Furthermore, it is essential to ensure that the soul of the person being reincarnated truly exists in the Pure Land. If the soul is sealed, the Impure World Reincarnation technique cannot be successfully executed.

When Naruto first used the "Sakakibara" Edo Tensei to resurrect Kabuto Yakushi, he made some unexpected discoveries due to his lack of proficiency.

To verify whether this discovery can be controlled by humans.

After reading the other techniques in the Scroll of Seals, Naruto had some new ideas.

That's why he ended up in the prison of Hozuki Castle.

The prisoners here... are enough for him to conduct his experiments.

If this experiment can actually be realized, then Kabuto Yakushi will be able to "help" Naruto again.

Chapter 4 The Deliberately Degraded Impure World Reincarnation

Naruto has his own ideas about the Impure World Reincarnation.

Naruto did not change the initial step of obtaining the DNA of the deceased—that is, the person who was reincarnated.

but……

Naruto precisely pierced the heart of the unconscious prisoner before him with a kunai.

The prisoner's physical death has been confirmed.

The reason it's described as physical death is because Naruto used the "Soul Imprisonment Technique" on the prisoner before killing him.

Soul imprisonment.

This is also a forbidden technique invented by the Second Hokage, Tobirama Senju.

As the name suggests, Soul Imprisonment can forcibly imprison the soul of the caster within the body.

In the original story, during the Fourth Shinobi World War, Tobirama Senju, who was resurrected using Edo Tensei, used this technique to forcibly suppress the soul of the dying Sasuke into Sasuke's body.

Sasuke was allowed to hold on until Kabuto Yakushi broke free from Izanami's control and rescued him.

So, in the original story, Karin only awakened the Adamantine Sealing Technique after sensing Sasuke's life force dwindling.

If Karin can't learn the Adamantine Sealing Chains through normal means, Naruto might need to use similar methods to help her master them.

So after winning over Karin, it's clear that we can't just use her; we also need to bind and restrain her.

But that's a story for later. Right now, Naruto needs to focus on his ideas for improving the Impure World Reincarnation technique.

"Then, let's first undo Kabuto's Impure World Reincarnation."

Naruto muttered to himself.

He glanced at the prisoner, who was still breathing because he had been subjected to a soul-binding spell.

Then, with his hands forming a hand seal, the earthen-yellow coffin rose from the cell floor and appeared beside Naruto as an upright coffin.

The coffin lid fell to the ground, and the deceased, reborn from the filth, emerged from the coffin.

It was Yakushi Kabuto.

"Naruto! You damned bastard!"

This is different from the Impure World Reincarnation technique that Kabuto Yakushi improved during the Fourth Shinobi World War in the original work, which allowed the resurrected dead to fully utilize all their abilities from their previous lives.

The Impure World Reincarnation technique recorded by the Second Hokage, Tobirama Senju, in the Scroll of Seals was not perfect. Orochimaru and Naruto used the most original Impure World Reincarnation technique from the Scroll of Seals.

Therefore, even if Naruto did not deliberately control Kabuto at this moment, Kabuto's reanimated body could not move freely.

His soul returned to the mortal world, and all he did was hurl insults at Naruto for killing him.

It's completely different from Kabuto Yakushi's personality.

Logically speaking, someone like Kabuto Yakushi would hide his emotions even in death.

This is precisely the "problem" that occurred when Naruto first used the Impure World Reincarnation.

It was also Naruto's "discovery".

Those reborn through the Impure World Reincarnation – have different personalities.

In the original work, there are two ways to control a reanimated person: one is to erase the consciousness of the dead and have the caster personally control the dead to fight.

In the original work, the battle between Orochimaru and the Third Hokage was conducted by Orochimaru controlling the First and Second Hokage.

The advantage of this is that there is no need to worry about the deceased leaking information.

However, the downside is that the deceased's fighting style is entirely dependent on the caster and cannot utilize the deceased's own strength.

In the original story, during the Fourth Shinobi World War, Kabuto Yakushi was able to control the perpetrator while preserving the self-awareness of the deceased.

The advantage of this is that it allows the deceased to fully utilize their strength while preserving their unique fighting style.

In addition, the unique immortality of the Impure World Reincarnation makes these dead the most troublesome enemies.

The downside is that while the deceased's body is restrained, their consciousness remains free.

Preserve personality—or erase personality.

One can only choose one of the Impure World Reincarnation techniques.

This is a technique that summons the dead to fight.

Rather than the technique of "acquiring intelligence".

Sasuke's attempt to extract the truth from the past Hokage was solely through threats.

If it weren't for the First Hokage, Hashirama Senju, being willing to reveal the truth, Sasuke would never have learned the truth.

But Kabuto Yakushi, resurrected by Naruto using Edo Tensei, was very strange. He was like a completely different person. He had lost his rationality and was left only with anger.

This is easy to determine.

"Kabuto-senpai, did Orochimaru get his information about me from you?"

Naruto asked.

"I don't know how that damned Orochimaru found out about you!"

Kabuto Yakushi, resurrected through Edo Tensei, treated Naruto and Orochimaru in exactly the same way.

Despite his drastic change in personality, Kabuto Yakushi's will still clearly distinguishes between friend and foe.

However, because he lacks normal emotions, Kabuto Yakushi may not always tell the truth, but he always answers Naruto's questions, the one who cast the spell.

"Yeah……"

This was just Naruto talking to himself; you could tell just by listening to his tone.

Given Kabuto's usual composure, he would never have responded under these circumstances.

"Yes."

Naruto already had a clue as to why this was happening.

Kabuto Yakushi's soul is incomplete; it contains... impurities.

This impurity is "Sakakibara".

Naruto unintentionally prevented Sakakibara's soul from being completely covered by the reanimated Kabuto Yakushi's soul.

If Naruto could control this "impurity," he might be able to maintain absolute control over the dead while preserving their personalities through the Edo Tensei.

His Impure World Reincarnation is no longer a matter of preserving the deceased's personality or erasing it, a choice that even Kabuto Yakushi couldn't resolve after his improved version of Impure World Reincarnation.

Instead, it combines the two.

Naruto's proposed method for controlling this "impurity" is the "Soul Imprisonment Technique".

Naruto deliberately simplified the Edo Tensei process.

He killed the living sacrifice and forcibly locked the soul of the sacrifice with a soul imprisonment technique.

Although the offerings are still "alive".

But it has already deteriorated in essence.

Next, the living sacrifice is reincarnated using the Impure World Reincarnation technique. The soul of the living sacrifice itself is still imprisoned and sealed in the reincarnated body, becoming an impurity that affects the soul of the reincarnated dead.

This way, the "impurities" can be used to squeeze out the self-will of the reanimated person, leaving behind everything except their personality—their ninjutsu, bloodline limit, fighting style, and knowledge from their previous life.

……

This idea came about after Naruto used prisoners to repeatedly resurrect Kabuto Yakushi using the Impure World Reincarnation technique hundreds of times.

Naruto finally succeeded.