The morning sun, filtering through the curtains of the mansion, bathed the three individuals sleeping in an embrace.
Shun slowly opened his eyes. Mabui and Yugito beside him were still sound asleep, their warm breaths falling evenly on his shoulder.
He gently brushed aside a strand of Yugito's hair from her cheek, distinctly feeling the softness of her skin.
Last night's intimacy had temporarily calmed the restless Tailed Beast Chakra.
He carefully got up, avoiding disturbing the two, changed into his usual dark brocade robe, and then left using Flying Thunder God.
In an underground training room somewhere, an ancient stone tablet adorned the wall, inscribed with mysterious writings.
This ancestral Uchiha stone tablet recorded the legend of the Sage of Six Paths, with one passage clearly stating: "The fusion of Asura and Indra's power can grant the power of all creation, thereby awakening the Rinnegan!"
Following this was the content of the Infinite Tsukuyomi, which Black Zetsu had altered.
Looking at the stone tablet, Shun shook his head, his eyes full of doubt. "If it were truly that simple, why did it take Madara decades to awaken the Rinnegan after transplanting Hashirama cells? Why have no past powerhouses of the Uchiha clan been able to replicate this path? There must be a truth deliberately concealed here."
Shun was a transmigrator, so he naturally disliked taking the conventional route.
The Sage of Six Paths's Rinnegan was inherited from Kaguya and Kaguya's Rinnesharingan originated from the Ten-Tails Chakra within her body.
Thinking of this, his eyes suddenly lit up, and a bold idea formed in his mind.
"The Ōtsutsuki's ability to awaken the Rinnegan relies not on the power of Asura and Indra, but on the Chakra of the God tree. Ten-Tails is the incarnation of the God tree, which means the true shortcut to awakening the Rinnegan is the Ten-Tails Chakra."
He suddenly stood up, his Chakra trembling slightly with excitement.
"The nine tailed beasts were originally formed from Ten-Tails' split. If I can re-fuse their Chakra, I can synthesize the Ten-Tails Chakra. By then, not only will I solve the problem of the tailed beast's restlessness, but I will also be able to awaken the Rinnegan."
Having figured out this crucial link, Shun no longer hesitated. He walked to the center of the secret room and sat down with his feet shoulder-width apart.
"System, I want to fuse the Chakra of the nine tailed beasts within me."
[Ding, detected nine Tailed Beast Chakra within the Host, meeting the fusion conditions. Do you wish to activate Ten-Tails Chakra Fusion?]
The system's cold, mechanical voice sounded in his mind, devoid of any emotion.
"Activate!"
As soon as he spoke, Shun's surrounding Chakra became somewhat chaotic.
He sensed the changes within his body and immediately felt a little uneasy. Shortcuts, as expected, came with some risks.
Nature Mode: Activate!
The Nature Cursed Seal patterns spread from his chest to his entire body, and golden natural energy gathered from all directions, surrounding him to form a faint golden light membrane.
"The natural energy of Nature Mode should be able to suppress the rampage of the Tailed Beast Chakra."
With a thought, he actively guided the golden natural energy to envelop the nine Tailed Beast Chakra. The nine Tailed Beast Chakra were forcibly pulled by the light net and gradually began to converge.
He firmly locked the nine Tailed Beast Chakra in the center, not allowing them any chance to break free.
The golden natural energy slowly permeated the nine Tailed Beast Chakra like a lubricant.
[Ding, Ten-Tails Chakra Fusion successful!]
[Detected that Host possesses Eternal Mangekyo Sharingan, meeting the Rinnegan Awakening Conditions. Do you wish to absorb the Ten-Tails Chakra?]
For the first time, the system's mechanical voice carried a faint ripple of emotion.
"Absorb!" Shun gritted his teeth as he uttered.
The pain in his body made his vision blur repeatedly, yet he held on stubbornly.
The golden natural energy and the Ten-Tails Chakra surged through his Chakra pathways, ultimately all rushing towards his eyes.
"Ahhh..."
Shun let out a roar. His eyes were in searing agony, as if flames were burning within them.
He could clearly feel the pattern of his Eternal Mangekyo Sharingan twisting and changing, its color slowly turning golden, rotating around his pupils, and finally forming the golden Six Tomoe Rinnegan.
Golden light shot from his eyes, illuminating the entire secret room. The barrier runes on the walls were activated by the light, also emitting a faint golden glow, reflecting the light from his eyes.
He sensed the difference in his eyes. Everywhere his gaze fell, the natural energy flowing in the air was clearly visible.
"This is... the Rinnegan that was awakened through natural energy and Ten-Tails Chakra?"
Shun could clearly feel that the Ten-Tails Chakra and the golden natural energy within him had perfectly fused, with no trace of rejection whatsoever.
His internal Chakra and the external natural energy began to converge, forming six black Truth-Seeking Orbs behind him. The surface of the Truth-Seeking Orbs was also enveloped in a faint golden halo, a form not present in ordinary Truth-Seeking Orbs.
"I didn't expect forming Truth-Seeking Orbs would consume so much Chakra." Shun sighed.
If he had a weakness, it was the limited Ten-Tails Chakra within him. If he used up all of this Chakra, he would only be able to use his own Chakra to synthesize it, which would consume an enormous amount of Chakra.
"I didn't expect I'd still have to worry about insufficient Chakra in the future."
Even so, a triumphant smile was still present on Shun's lips.
He slowly reined in the golden Chakra around him, yet still exuded a suffocating pressure.
Just then, the door to the secret room was gently pushed open, and Tsunade and Mikoto walked in.
The palace's barriers had suddenly all activated, and worried about an accident, they followed the Chakra fluctuations to this location.
Seeing the golden Six Tomoe Rinnegan in Shun's eyes, both of them were stunned.
Tsunade instinctively stepped forward, her voice filled with shock and concern. "Shun, are you alright? Your eyes... why have they turned into golden Rinnegan?"
Shun gave them a gentle smile, and the golden Six Tomoe Rinnegan in his eyes slowly receded, returning to ordinary black pupils.
He stepped forward and gently held their hands, the warmth from their hands warmed his heart.
"I solved the problem of the nine Tailed Beast Chakra's restlessness and unexpectedly awakened the Six Tomoe Rinnegan."
Mikoto looked at the bloodstain at the corner of his lips. She reached out to gently wipe it away, her eyes full of heartache. "Did it hurt a lot? Don't be so reckless next time."
Tsunade scrutinized him, her eyes full of admiration. "Your aura has become several times stronger. The legendary Rinnegan of the Sage of Six Paths is purple, which is different from your golden Rinnegan. Is there a difference in abilities?"
Shun smiled and nodded. "I still need to explore the abilities of this Rinnegan."