Emotional Experiments, Human Experiments!

"What did you say? You want death-row inmates, and the kind who have committed such heinous crimes that it wouldn't be a pity no matter what you did to them?"

Hiruzen Sarutobi looked at the teenager in front of him with a strange expression; did the boy even realize what he was asking for?

"What? Have you been Hokage for so long that you've truly come to believe human experimentation is unforgivable?"

Ensei Uchiha spoke in a leisurely, unhurried tone.

In that instant, Hiruzen Sarutobi felt as though he saw the shadow of his own teacher reflected in Ensei Uchiha.

If Tobirama Senju knew what Hiruzen Sarutobi was thinking at this moment, he would likely feel unable to rest in peace.

"No, it's just that I had a student who was once obsessed with human experimentation..."

Hiruzen Sarutobi's old habit flared up, and he prepared to launch into a lecture for Ensei Uchiha.

But clearly, Ensei Uchiha couldn't care less about him.

"I know, that Orochimaru, right! Back then, because of a moment of soft-heartedness, you let him leave Konoha."

"But honestly, if you ask me, you should blame yourself for that!"

"Who told you to let Orochimaru associate with Danzō? You knew exactly what kind of person Danzō was, didn't you?"

"From the moment you allowed Orochimaru to contact Danzō, he probably already understood his own fate. He is, after all, a rare genius."

"Good grief, it's not like Tobirama Senju never conducted human experimentation. Why are you lecturing me about Orochimaru..."

Before Hiruzen Sarutobi could finish his sentence, he was naturally interrupted by Ensei Uchiha's string of complaints, which also stirred up painful memories.

As Hokage, he certainly knew why Orochimaru had left Konoha.

"Perhaps, I really am old!"

At this moment, Hiruzen Sarutobi seemed to lose his spirit, his entire demeanor appearing exceptionally aged.

"Hey, old man. Stop playing dead. Hurry up and get me some death-row inmates—the truly heinous kind. Don't bring me anyone who committed minor offenses."

"If you don't have any here, go coordinate with other ninja villages or the Daimyos of other countries for me."

Ensei Uchiha's voice cut through Hiruzen Sarutobi's sorrowful facade like an invisible blade.

Before the Three Tomoe Sharingan, which shimmered with a blue light deep within their pupils, all of his pretenses seemed to cease to exist.

In that moment, Hiruzen Sarutobi felt a surge of fear toward the youth before him and couldn't help but ask:

"Ensei, what is your dream? To learn every ninjutsu in the world?"

Hearing this question, Ensei Uchiha roughly understood what Hiruzen Sarutobi was thinking.

"What you're describing is Orochimaru's dream. I'm actually quite a peaceful person. As for my dream..."

"It's simple: as long as no one can cause harm to me or anything I care about, that's enough."

After hearing this, Hiruzen Sarutobi pondered for a moment, then suddenly revealed a faint smile and praised, "That is truly a wonderful dream."

"Thank you for being willing to share these inner thoughts with me. I will arrange for the heinous death-row inmates you requested to be delivered to the Uchiha compound."

Those death-row inmates were delivered quickly, accompanied by a file detailing the crimes they had committed.

As for whether it was true or not... Ensei Uchiha didn't care, but in this world, finding a few pieces of human trash was simple enough.

After finding a place to house these scumbags, Ensei Uchiha experimented for a few days before terminating these meaningless tests.

In his previous life, he wasn't a doctor, so his knowledge of medical science was limited.

Although he had specifically studied medical ninjutsu in this world, he had focused primarily on chakra control and a few basic techniques; he had never mastered the intricacies of the human body.

Therefore, a few days later, Ensei Uchiha returned to Kushina Uzumaki for lessons.

Yes, that's right. Kushina Uzumaki. She had originally gone out to hunt down Danzō, but since she couldn't find him, she had no choice but to return.

It was unclear what kind of conspiracy that guy Danzō was brewing; he was clearly hiding within Konoha, yet no one could find him.

Ensei Uchiha had managed to track a person radiating intense malice toward him by sensing the Nine-Tails' chakra.

Although that person might be Danzō Shimura, Ensei Uchiha had no interest in paying him any mind.

He was just a vessel for the Impure World Reincarnation; what kind of trouble could he really cause?

If he went to confront him directly, it would most likely be a trap.

A normal trap would be one thing, but anything set by Danzō Shimura was bound to be dangerous—better to let someone else deal with it.

Ignoring those trivial matters, Ensei Uchiha began following Kushina Uzumaki to learn medical ninjutsu.

Over the past few years, thanks to Minato Namikaze, Kushina Uzumaki had frequently communicated with Tsunade via Katsuyu and had learned quite a few medical techniques, occasionally even using the Transformation Jutsu to help out at Konoha Hospital.

It was precisely because of this that Minato Namikaze's physical condition hadn't deteriorated despite lying in bed for so long.

Women, for the sake of their loved ones, are truly capable of enduring any hardship.

Ensei Uchiha wanted to understand the relationship between human endocrine hormones and emotions, and aside from reading documents, the best choice was to ask Kushina Uzumaki.

Time flowed on, bit by bit.

In the blink of an eye, several months had passed.

On this day, Ensei Uchiha left Kushina Uzumaki's place and was contemplating the specific steps for his next emotional experiment when he accidentally looked up at the map of Konoha on the wall.

"Huh, the Pot Kage actually moved. I thought he was glued to that spot."

"He hasn't crossed the perimeter yet, ignore him."

Ensei Uchiha stared curiously for a moment, only to find that Shimura Danzō had returned to his original position, standing perfectly still.

"It's definitely a trap! Only a fool would go there."

With a casual remark, Ensei Uchiha turned back toward the laboratory.

"Emotion Experiment, Phase One—Anger!"

As he spoke, Ensei Uchiha pulled out a syringe and injected it into the body of the poor soul before him.

Soon, as the serum took effect, the eyes of the death-row prisoner, whom Ensei Uchiha had been keeping for several months, began to burn with rage.

The first experiment was a success; it seemed almost too simple.

Next, after waiting for the effects of the drug to wear off, Ensei Uchiha proceeded to test joy, sorrow, worry, and other emotions in turn.

Overall, the experiments were successful. However, certain nuances could not be achieved through medication alone; they required specific catalysts.

The first tool to be employed was Genjutsu.

Although he had already concluded from Itachi Uchiha that Genjutsu was of little use for awakening the eyes, it was still very effective at inducing specific emotions in ordinary people.

Creating a Shadow Clone, Ensei Uchiha began to monitor the hormone secretion and the shifts in the mind and soul of the test subject.

What he needed to do now was replicate the moment of a person's deepest sorrow and despair.

But just as he was busy at work, a surge of Chakra fluctuations struck, causing Ensei Uchiha to snap back to reality and instinctively dispel his Shadow Clone.

Summoning the Zero-Two Model, he observed the reaction of the Nine-Tails Chakra within it; it seemed that an enemy had already infiltrated Konoha and was currently closing in on his location.