Orochimaru found Yuuki's polite words quite pleasing.
After all, people are different; for example, no matter how much the children of Otogakure admired Orochimaru, he didn't feel much about it.
But with Yuuki's words, Orochimaru knew there was probably not an ounce of sincerity, yet he still found them very pleasant to hear.
"Hehe, you're right, Yuuki-kun. Shall we start now?"
Yuuki nodded and said,
"Of course, that's what I'm here for."
Orochimaru began leading Yuuki through a maze of turns.
To be honest, Yuuki felt quite suppressed there; stone walls surrounded them, and dim oil lamps illuminated only small areas, barely allowing him to see his surroundings.
In many parts of the underground base, water droplets fell, and even the air carried a damp smell.
Only Orochimaru would like this kind of environment!
The two walked for about three minutes before arriving at a stone chamber covered in sealing barriers.
Orochimaru slowly formed hand signs in front of Yuuki, undoing the seal.
Yuuki naturally understood the meaning; this was a gesture of goodwill, but Yuuki didn't mind it at all.
The Ninja World was vast, and Yuuki could now go wherever he pleased.
As the seal was released, the stone door automatically opened.
From outside, Yuuki saw the situation inside the room.
There were many instruments, bottles, and jars, and of course, several computers, clearly used for calculations.
The entire ceiling of the room was covered with white electric lights, emitting a soft white glow, and everything in the room was shadowless.
Yuuki nodded; it looked very professional at first glance.
But it must all be my money!
After following Orochimaru into the room, the door behind them closed automatically.
Orochimaru wasted no more words, using tweezers to remove a nail-clipping-like object from a piece of equipment.
He held it up to his eyes with the tweezers.
"The source of this discovery lies in this thing!"
Yuuki didn't speak; he knew Orochimaru would continue on his own.
Researchers often have a habit: once they start, they unconsciously enter a teacher's state, not caring whether others understand, they just want to express themselves.
"This is a fragment from the Eight-Tails. I won't go into its specific origin, but when my research into Chakra hit a bottleneck and yielded no results for a long time,"
"I suddenly remembered that besides humans and animals, there's another special existence with Chakra: the Tailed Beast. And I happened to have a fragment from a Tailed Beast, so I began my research on the Eight-Tails fragment!"
Orochimaru glanced at Yuuki then, noticing Yuuki's serious expression and slight nods.
Orochimaru was clearly very satisfied with Yuuki's state. Yuuki-kun, we really get along well!
"Actually, initially I didn't have too much hope. After all, ever since I got these fragments, I had studied them carefully. I found it was just a Tailed Beast fragment that continuously produced Chakra."
"Such a small volume naturally couldn't produce much Chakra. After figuring that out, I tried to clone it, to make it proliferate continuously. Perhaps then this thing could be useful."
"Later, due to leaving Konoha and having more interesting things, my research on these fragments stopped."
At this point, Orochimaru again paid attention to Yuuki's expression, finding no abnormalities.
Actually, Orochimaru was overthinking it; Yuuki didn't care whether he left or defected, only whether he was useful, especially whether he was useful to himself.
If he was useful, even if he claimed to be on a secret mission pretending to defect, Yuuki could create a whole set of fake files for him.
If he was useless, even if he truly left the village on a mission, Yuuki wouldn't acknowledge it.
"But after I truly began researching, I discovered that these fragments were significantly different from before. Speaking of which, it's related to Yuuki-kun!"
Yuuki interjected at this point.
"Is it because of the Eight-Tails' death?"
"Exactly, it's because of the Eight-Tails' death that these fragments changed! They no longer produce Chakra!"
Yuuki, at this moment, was thinking more deeply. After going all out in the Kumogakure camp, Yuuki clearly remembered that Hellfire had harvested the Eight-Tails' soul.
And Saiken, as Konoha Voice's power bank, played an important role for Yuuki.
Therefore, every time Saiken worked, Yuuki directly used his PY method to get closer to Saiken. In one conversation, Yuuki unintentionally learned that Eight Tails Gyūki was in the process of resurrection.
If that were the case, then the body parts the Eight-Tails had lost should logically continue to produce Chakra.
And according to Orochimaru's statement, there was only one possible reason for this situation: the Eight-Tails currently resurrecting was no longer the original Eight-Tails.
Yuuki's thoughts raced, but his expression remained unchanged, still like a serious elementary school student listening intently, occasionally nodding slightly.
"When they no longer produced Chakra on their own, I was finally able to conduct more detailed research."
"Because I initially realized that Chakra is generated by refining Natural Energy, I tried injecting Natural Energy into them. Sure enough, Chakra was produced again, and at an astonishing speed!"
"To understand exactly how Chakra is produced, I decomposed these fragments, all the way down to a critical size. Below that critical size, even with injected Natural Energy, Chakra would no longer be produced."
Yuuki nodded with a slightly larger Amplitude, indicating he understood the meaning.
Although he knew nothing about scientific research, he could still understand Orochimaru's Popular Science-like explanations.
"Since Yuuki-kun understands, I won't explain in detail anymore. Afterwards, I researched the critically sized fragments, trying to find the reason for their conversion of Natural Energy into Chakra."
At this point, Orochimaru's expression also became serious, and the smile on his lips disappeared.
"I failed, but I also succeeded."
Yuuki appropriately showed a confused expression, signaling Orochimaru to explain.
Orochimaru didn't keep him in suspense and continued,
"The failure was that I still couldn't figure out how such a small fragment converts Natural Energy into Chakra."
"The success was that although I couldn't understand it, I created a similar instrument based on its special structure. Although its conversion efficiency and speed are far inferior to the Tailed Beast fragments, it successfully converted Natural Energy into Chakra."
Yuuki understood Orochimaru's meaning at this point, much like quantum mechanics in Yuuki's previous life, where there were too many things that were not understood or clear.
But that didn't prevent people from manufacturing mobile phones, televisions, and computers based on the principles of quantum mechanics.
Simply put, I don't understand why you're like this, but I can use it!
However, Yuuki raised his question.
"Then, She Shu, what does this have to do with your intelligence stating that Ninja never possessed Chakra?"
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