"What did you say? You wanted death-row prisoners, the kind guilty of utterly heinous crimes, the kind no one would regret using for any sort of evil deed?"
Hiruzen Sarutobi looked strangely at the teen before him. Did he even know what he was saying?
"What? After being Hokage for so long, did you really start believing human experimentation was unforgivable?"
Uchiha Ensei spoke unhurriedly.
At that moment, Hiruzen Sarutobi seemed to see the shadow of his own teacher in Uchiha Ensei.
If Tobirama Senju knew what Hiruzen Sarutobi was thinking right now, he would probably be unable to rest in peace.
"No, it's just that I once had a disciple who became obsessed with human experimentation..."
Hiruzen Sarutobi's old habit flared up again, and he was about to lecture Uchiha Ensei.
But clearly, Uchiha Ensei did not give a damn.
"I know, that was Orochimaru! Back then, you went soft for a moment and let him leave Konoha."
"But if you ask me, this was your own fault!"
"Who told you to let Orochimaru associate with Danzo? What kind of person Danzo was, didn't you know?"
"From the moment you allowed Orochimaru to get close to Danzo, he probably understood what his own fate would be. He was quite a rare intelligent man."
"Seriously, it wasn't as if Tobirama Senju never conducted human experiments. Why were you bringing up Orochimaru to me..."
Before Hiruzen Sarutobi could finish, Uchiha Ensei's string of complaints cut him off and dredged up painful memories.
As Hokage, of course he knew why Orochimaru had left Konoha.
"Perhaps I really am old!"
At that moment, Hiruzen Sarutobi seemed to have lost all spirit, appearing exceptionally aged.
"Hey, old man. Stop playing dead and get me a few death-row prisoners already. The ones guilty of heinous crimes. Don't send me anyone whose crimes are too minor."
"If you don't have any here, coordinate with other ninja villages or the daimyos of other countries."
Uchiha Ensei's voice was like an invisible blade, slicing through Hiruzen Sarutobi's sorrowful facade.
Before that Three-Tomoe Sharingan, blue light flickering in the depths of its pupils, all of his disguises seemed nonexistent.
At that moment, Hiruzen Sarutobi actually felt a trace of fear toward the boy before him and could not help asking:
"Ensei, what is your dream? To learn everyone's ninjutsu in the world?"
Hearing this question, Uchiha Ensei roughly understood what Hiruzen Sarutobi was thinking.
"What you described was Orochimaru's dream. I'm actually a pretty peaceful person. As for my dream..."
"It's simple. As long as no one can harm me or anything I care about around me, that's enough."
Hearing that, Hiruzen Sarutobi pondered for a moment before suddenly smiling. "That really is a fine dream."
"Thank you for telling me what was in your heart. I'll arrange for the heinous death-row prisoners you want to be sent to the Uchiha clan compound."
Those death-row prisoners were delivered quickly, along with documents detailing the crimes each of them had committed.
As for whether it was true... Uchiha Ensei did not care. In a world like this, finding a few scumbags was probably easy enough.
After finding a place to house those scumbags, Uchiha Ensei conducted experiments for several days before ending those meaningless tests.
In his previous life, he had not been a doctor, so his knowledge of medicine was limited.
Although he had specifically studied Medical Ninjutsu in this world, he had mainly learned chakra control and a few Medical Ninjutsu techniques. He had not grasped much about the human body itself.
Thus, after several days, Uchiha Ensei returned to Kushina Uzumaki's place for lessons.
Yes, Kushina Uzumaki. She had originally gone out to capture Danzo, but after failing to find him, she could only return.
Who knew what scheme Danzo was plotting? He was clearly hiding in Konoha, yet no one could find him.
Using the Nine-Tails chakra's malice detection, Uchiha Ensei had found someone harboring intense malice toward him.
Although that person might have been Shimura Danzō, Uchiha Ensei had no interest in dealing with him.
He was merely an Impure World Reincarnation body. What trouble could he possibly cause?
If Uchiha Ensei went to him proactively, it would very likely be a trap.
Ordinary traps would have been one thing, but anything Shimura Danzō set up was bound to be somewhat dangerous. Better to let someone else handle it.
Ignoring those trivial matters, Uchiha Ensei began following Kushina Uzumaki to learn Medical Ninjutsu.
Over the past few years, because of Minato Namikaze, Kushina Uzumaki had often communicated with Tsunade through Slug and learned quite a bit of Medical Ninjutsu. Sometimes, she even used the Transformation Technique to help out at Konoha Hospital.
That was how Minato Namikaze had been bedridden for so long without suffering even the slightest decline in physical condition.
Women really could endure any hardship for the ones they loved.
Aside from reviewing materials, the best way for Uchiha Ensei to understand the relationship between endocrine hormones and emotions was to consult Kushina Uzumaki.
Time passed bit by bit.
In the blink of an eye, several months had gone by.
One day, after leaving Kushina Uzumaki's place, Uchiha Ensei was planning the specific steps for the next stage of his emotion experiments when he happened to glance up at the map of Konoha on the wall.
"Huh, Pot Kage actually changed positions. I thought he was fixed there for good."
"He hasn't crossed the warning line yet. Ignore him."
Uchiha Ensei watched curiously for a while, only to discover that Shimura Danzō had returned to his original position and was standing completely still.
"It's definitely a trap! Only an idiot would go."
After casually grumbling, Uchiha Ensei returned to the laboratory.
"Emotion experiment, first stage—anger!"
As he spoke, Uchiha Ensei took out an injection and injected it into the unlucky man before him.
Very soon, as the drug entered his body, the death-row prisoner Uchiha Ensei had kept for several months began to look furious.
The first experiment was declared a success. It seemed a little too easy.
After waiting for the drug's effects to fade, Uchiha Ensei proceeded to try joy, sorrow, worry, and other emotions in sequence.
Overall, the experiments succeeded. However, certain finer aspects could not be achieved through drugs alone and required special catalysts.
The first to take the stage was genjutsu.
Although Itachi Uchiha had already concluded that genjutsu was of little use in awakening the Sharingan.
For ordinary people, however, genjutsu could still easily induce particular emotions.
Creating a Shadow Clone, Uchiha Ensei began observing the test subject's hormone secretion, as well as changes to his thoughts and soul.
What he wanted to do now was recreate the saddest, most despairing moment in a person's life.
But while he was busy, an incoming chakra fluctuation brought Uchiha Ensei back to his senses, and he instinctively dispelled the Shadow Clone.
He summoned Zero-Two. Judging from the reaction of the Nine-Tails chakra within him, it seemed that enemies had already infiltrated Konoha and were still approaching this place.
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