This is because Kaguya's immortality is deeply bound to the origin of the world, making it extremely difficult to forcibly strip her of it.
The Sage of Six Paths were unable to succeed for a long time, so they could only retreat to the Pure Land and wait silently for their opportunity.
These three immortals were crucial pawns planted by the Sage of Six Paths in this earth-shattering conspiracy.
They are special puppets that the Sage of Six Paths personally refined and meticulously crafted from a portion of his own soul; they are by no means naturally conceived celestial beasts!
The Sage of Six Paths endowed them with independent personalities, making them loyally guard the Three Great Sage Lands on his behalf, overlooking the development of the entire Shinobi World from a high vantage point.
More importantly, these three immortals are the key medium through which the vast divine soul of the Sage of Six Paths was able to break through the limitations of the Pure Land and manifest in the mortal world!
"Unfortunately..."
Uchiha Xin looked at the dissipating fragment of his soul in his hand and curled his lip.
The three immortals prematurely activated the secret technique of soul self-destruction.
This has led to the loss of knowledge about many deeper, hidden plans, as well as the Sage of Sage of Six Paths' contingency plans placed throughout the Shinobi World.
If it were an ordinary person, they would be terrified to learn that they were being schemed against by an ancient monster who had lived for thousands of years.
But Uchiha Xin didn't care at all.
He had his hands in his pockets, his eyes filled with absolute confidence and arrogance.
What good are all the schemes and tricks?
"In the face of absolute power, all scheming is nothing but a paper tiger."
Uchiha Xin had absolute confidence in his own strength.
What's more, he also has the system as his biggest cheat code.
He was completely unafraid of any of the Sage of Six Paths' schemes; if that old guy dared to show his face, he would simply punch him to pieces.
Gathering his thoughts, Uchiha Xin looked around.
His deep, Tensei Rinnegan flickered slightly as he began to carefully examine this peculiar alternate dimension.
Upon seeing this, his eyes immediately lit up with surprise.
"That's quite a gesture."
Uchiha Xin couldn't help but exclaim in admiration.
He discovered that this alternate dimension was by no means a naturally formed secret realm.
It is a supreme treasure land that the Sage of Six Paths spent hundreds of years and poured his heart and soul into creating!
This space is like a giant water pump, constantly absorbing the immense power from outside the Shinobi World world and perfectly transforming it into the purest Natural Energy.
The Natural Energy here is so concentrated it's almost liquid; it's practically an ideal place for cultivation.
"However, compared to this space, the three physical bodies on the ground represent the truly enormous opportunity."
Uchiha Xin's gaze fell upon the three enormous, mountain-like sage bodies below.
Having lost the support of their souls, the bodies of the White Snake Sage, the Great Toad Sage, and the Katsuyu Sage have completely lost their vitality.
However, the vast amount of Senjutsu Chakra and Six Paths Origin contained within them remains as boundless as an ocean.
"System, absorb this!"
Without any hesitation, Uchiha Xin issued the command directly in his mind.
"Ding! Host command received!"
"Scanning target... Scan complete!"
"Target confirmed: White Snake Sage's body. Contains immense primordial energy, which can be converted into proficiency!"
"Begin absorption!"
boom!
An invisible force of devouring energy erupted from Uchiha Xin's body, instantly engulfing the massive remains of the White Snake Sage.
In just a few seconds.
That indestructible, mountain-like white serpent body,
It withered and weathered at a speed visible to the naked eye, eventually turning into dust and completely dissipating into space.
At the same time, a series of crisp system notification sounds flooded Uchiha Xin's mind.
"Ding! Absorption successful!"
"Congratulations, host! You have gained 25 million points in the Eight Gates Released Formation!"
Upon hearing this terrifying number, Uchiha Xin's breathing quickened.
Twenty-five million!
The mere body of the White Snake Sage provided such a massive amount of proficiency!
"Keep going! Absorb the other two too!" Uchiha Xin's eyes gleamed with fanaticism.
"Ding! Absorbing the body of the Great Toad Sage..."
"Ding! Absorption successful! Congratulations, host, you have gained 23 million Eight Gates Released Formation proficiency points!"
"Ding! Absorbing the Katsuyu Sage's body..."
"Ding! Absorption successful! Congratulations, host, you have gained 28 million Eight Gates Released Formation proficiency points!"
Rumble!
As the bodies of the three sages were completely devoured, Uchiha Xin felt an unprecedented surge of violent heat within his body.
He immediately brought up the system's properties panel.
Seeing the numbers jumping wildly, Uchiha Xin laughed with ecstatic joy.
With his original proficiency combined with the massive experience provided by these three immortal bodies, his accumulated proficiency is now completely maxed out!
"That's enough!"
Uchiha Xin clenched his fists, feeling the terrifying power about to erupt from within him.
"System, upgrade the Eight Gates Released Formation to the maximum level!"
"I will unlock the Body of the Extreme Path and evolve to the Power of the Limit!"
He couldn't wait to witness the Eight Gates Released Formation being pushed to its ultimate form.
What terrifying power will be born after completely breaking through the limits of the human body?
Just as Uchiha Xin was overjoyed, thinking that an epic breakthrough was about to occur,
In his mind, the system's voice suddenly became unusually serious.
"Ding! System warning!"
"An abnormal host status has been detected; the upgrade request has been forcibly stopped!"
"Inform the host: Upgrade is not possible at this time!"
The sudden stop caused the smile on Uchiha Xin's face to freeze instantly.
"What's the meaning?"
Uchiha Xin frowned, utterly astonished.
"My proficiency is already maxed out, why can't I level up? System, you owe me a reasonable explanation today!"
For the first time, the system's cold, mechanical voice carried a hint of helpless, anthropomorphic emotion.
"Host, please take a look at your own eyes."
"Your Tensei Rinnegan is currently in a state of extremely rapid and continuous evolution, and has not yet reached its true peak."
Upon hearing the system's notification, Uchiha Xin subconsciously touched his eyes.
He was then startled to realize that deep within those azure eyes, the pupil power representing the supreme law was still churning and transforming like boiling water.
"How could this be?" Uchiha Xin was utterly astonished.
"I thought that the Rinnegan's embryonic development had completely ended back in the Land of Snow, and that these eyes were fully formed!"
He always believed that his current Tensei Rinnegan was the pinnacle of Dōjutsu in the Shinobi World, the perfect and flawless ultimate form.
When the system heard these words, it couldn't help but make a very human complaint.
"Host, you have absolutely no idea how powerful this system is!"
"You have completely underestimated the evolutionary path tailored for you by the system, and you have also seriously underestimated the true potential of these ultimate Dōjutsu!"