Naruto: My Chat Group Spans History.

Sasuke, however, was already on guard; his eyes were lowered, and a storm was brewing beneath his calm exterior.

Lightning exploded, and the power of thunder surged forth!

"Chidori Stream!"

A torrent of electricity poured down on Orochimaru like a waterfall. This overwhelming attack left Orochimaru with no way to dodge and he could only endure it.

Orochimaru's movements became sluggish after being electrocuted!

Sasuke swung his left hand, and a bolt of lightning shot out, piercing through Orochimaru's body.

"Thousand Birds Sharp Spear!"

The Thousand Bird Spear pressed close to Orochimaru and slammed him hard into the ground.

With a deafening roar and a cloud of dust, the earth split open, burying Orochimaru within.

Sasuke stared blankly down at the crater.

Seeing that Orochimaru remained silent for a long time, he couldn't help but frown.

"What are you hiding for? Come out."

If Orochimaru were so easily defeated, he wouldn't be Orochimaru.

"Hehehe..."

"Sasuke-kun, you seem to know me quite well."

Orochimaru's laughter suddenly rang out from behind, and a human head had appeared behind Sasuke, eerily suspended, with a strangely elongated neck attached below the neck.

Orochimaru manipulated his head as if it were rubber, stretching it out at will.

"Your Lightning Release techniques are truly amazing, and with those Sharingan eyes, Sasuke-kun, you're making me more and more satisfied."

Orochimaru whispered in Sasuke's ear, his voice full of amusement.

As soon as he finished speaking, his elongated tongue gently licked Sasuke's face.

Sasuke frowned and turned his head away, saying, "How disgusting!"

"Hehehe... Excuse me, I can't help but feel excited upon seeing such talent."

"Speak, Sasuke-kun, what brings you here?"

Orochimaru smiled meaningfully.

This scene seemed particularly bizarre. One second they were fighting for their lives, the next they were chatting like old friends.

Because Orochimaru had discerned the subtleties involved.

Sasuke never truly intended to kill; he didn't sense even a trace of killing intent.

Sasuke's attacks were more like a display of power.

Orochimaru naturally understood.

At the same time, he was also testing Sasuke. If Sasuke wasn't strong enough, he would never have shown any mercy.

They might even steal Sasuke's eyes as spoils of war and use him as a new vessel for reincarnation.

But the power Sasuke displayed was enough for him to recognize him as an equal opponent.

Therefore, Orochimaru would naturally treat Sasuke with the same respect.

"Orochimaru, what do you consider true immortality? Is it five hundred years, a thousand years, or ten thousand years?"

Sasuke gently turned his neck, his gaze fixed on Orochimaru, and suddenly posed this question.

This was a question Orochimaru had spent his entire life exploring, and now it was suddenly thrown at him, striking straight to the depths of his soul.

Orochimaru's expression immediately turned serious. After pondering for a long time, he slowly replied:

"None of them count."

"True immortality should be an endless, eternal existence. The timeframes you mentioned are far removed from immortality."

Sasuke gently shook his head, his expression calm: "I'm afraid your goal is difficult to achieve."

"Even the Otsutsuki clan cannot achieve true immortality; at most, they can only live a little longer."

"Thousands of years, tens of thousands of years, will eventually come to an end; it cannot be considered immortality."

"Otsutsuki?" Orochimaru's eyes flashed with a hint of doubt.

"They are a race from beyond the heavens, and the source of chakra for the entire ninja world," Sasuke explained simply.

"Hehehe... This is truly an eye-opener for me, Sasuke-kun."

"However, just because they can't do it doesn't mean I can't."

Orochimaru didn't boast.

But the calm yet firm confidence on his face made one believe that he really might have that potential.

Sasuke nodded silently, offering no objection.

"Maybe you can do it, but it will definitely take a long time."

"I have a way to extend your lifespan by at least several thousand years, or even tens of thousands of years, giving you ample time to explore the secrets of immortality."

"With so much time, your research is bound to make a breakthrough, isn't it?"

"Even if you can't achieve immortality immediately, at least you can live on. Continue your research, and one day you will succeed."

Orochimaru's heart skipped a beat. Sasuke's visit couldn't have been just for casual conversation; there must be something he wanted to discuss.

Sure enough, the conditions followed immediately.

Extending one's lifespan by thousands or even tens of thousands of years is far superior to his current technique of resurrection.

With this, he really doesn't need to reincarnate every now and then, which takes so much effort.

But what comes at the cost of such tempting conditions?

Chapter 167 Snake Uncle, Mastering Core Technology

Orochimaru's expression turned serious as he asked, "Sasuke-kun, what do you want me to do?"

Sasuke stated bluntly, "My request is simple: I just want you to help me research something."

"For example?"

"Sharingan." Sasuke pointed to his eyes.

"I want to know how the Mangekyou Sharingan can evolve further."

Sasuke is clearly no longer able to take Itachi's eyes to complete his evolution.

Therefore, the only way to evolve the Mangekyou Sharingan into the Eternal Mangekyou Sharingan is to borrow Orochimaru's power.

This guy definitely has the ability, as long as he's willing to put in the effort.

"So these eyes are called kaleidoscopes, and they even have the potential to evolve? That's truly astonishing."

Orochimaru clicked his tongue in amazement and exclaimed in wonder.

"Such powerful eyes haven't even reached their full potential yet, and the hidden potential is terrifying. It's unbelievable that your Uchiha clan hasn't unified the ninja world."

"Oh, I see. Is it because outsiders discovered your potential that your people suffered such a catastrophic fate?"

Orochimaru feigned sudden realization, though it was unclear what kind of story he was weaving in his mind.

"Alright, stop making wild guesses." Sasuke's face darkened.

Danzo, that fool, has no vision for such a long term. To call him short-sighted would be an understatement.

"So, Sasuke-kun, what will your Mangekyou Sharingan evolve into next?"

Orochimaru pressed further, revealing that he currently knew nothing about this matter, and even someone as learned as him would find it difficult to begin without specific information.

"Eternal Kaleidoscope."

"The Eternal Kaleidoscope? How is it different from the ordinary one?"

"Overuse of a regular kaleidoscope can lead to a sharp decline in vision, even blindness."

"Evolving into an eternal kaleidoscope would eliminate this flaw, eliminating the risk of blindness."

"Hehehe... No wonder I rarely saw Itachi use those eyes before."

It turns out there was such a hidden danger.

Orochimaru let out a low laugh.

Sasuke glanced at him sideways: "Why are you smiling so sinisterly?"

"It's nothing, just some reflections."

Orochimaru chuckled. It was a little too late to learn this information now. Since he had already cooperated with Sasuke, he naturally wouldn't attack Uchiha Itachi anymore.

He couldn't beat his opponent either.

Sasuke looked away and continued the conversation:

"Logically speaking, to awaken the Eternal Eye, one must fuse a pair of kaleidoscopes from blood relatives."

"But as you know, I'm not going to have an eye transplanted from a weasel, therefore..."

"So you found me, right?" Orochimaru continued.

Sasuke glanced at him sideways and nodded silently.

"So what you mean is?"

Orochimaru didn't answer immediately, but thoughtfully asked, "Do we need to directly fuse with the eyes of a blood relative?"

"It sounds like you're trying to compensate for something missing; perhaps the root of your kaleidoscope blindness lies in some kind of defect."

"Once this defect is corrected, there will be no more vision impairment, and the evolved eye can be used permanently."

"This must be what they call the eternal kaleidoscope."

Orochimaru's words surprised Sasuke; his theory actually made a lot of sense.

No wonder he's a research fanatic; he figured out so many tricks of the trade so quickly.