At the end of the day, this power wasn't truly Madara's own—it came from the fusion of Senju and Uchiha might.
So, it wasn't entirely impossible that errors had occurred during the creation process, leading to Zetsu defying his will.
Even now, faced with this betrayal, Madara still believed the situation remained firmly under his control.
After all, no matter how much Zetsu wished to turn against him, what could he possibly do against someone who had become the Ten-Tails Jinchūriki?
Looking back on Madara's life, every move he made since leaving Konoha had been precisely calculated to keep everything within his grasp. Even before his final battle against Hashirama, he had sealed Izanagi within his eyes just in case of defeat.
From transplanting the Rinnegan into Nagato, guiding Obito down the path of darkness, to planting hidden measures within Obito's body—Madara had arranged everything so that his plans would continue even after his death.
This immense self-confidence, his flawless strategic mind, combined with the immense power he once wielded, made it impossible for Madara to ever doubt himself.
When faced with Zetsu's betrayal and questions regarding his nature, Madara—arrogant as he was—simply assumed there had been a flaw in his use of Yin-Yang Release. He never suspected there could be a deeper truth, and he firmly believed in this explanation.
"True nature, you say?" Zetsu smirked playfully in response to Madara's scorn. "Obito Uchiha asked me much the same question… and shortly after, he died. For someone like you, who never doubts himself… the answer is meaningless anyway."
Madara froze and fell silent. Zetsu was right. He trusted the words written on the stone tablet; he trusted his ideals; he trusted his own power. Therefore, he refused to doubt himself. Once doubt took root—no matter how small—it could spiral into thoughts he would no longer be able to control.
"How amusing this is getting!" Madara chuckled darkly. "Not even Hashirama himself could stop me now. Do you honestly believe you stand a chance against me?"
Zetsu smiled, the curve of his lips spreading across his face like a creeping shadow. "Raw power isn't everything. Now that you've been struck by my technique… even as the Ten-Tails Jinchūriki, you won't be able to resist…"
"Is that so…" Madara sneered, preparing to strike back. But the next moment, the sinister smile on his face abruptly vanished.
"My body… I can't move…"
Madara's eyes widened in utter disbelief as he glared at Black Zetsu. "What have you done?! I am the Ten-Tails Jinchūriki! How could I possibly be controlled by something I created with my own Yin-Yang Release?!"
"Kaoru Uchiha was absolutely correct…" Black Zetsu's voice rang out slowly and clearly. "Just like what you did to Obito back then… history is repeating itself, and now it is your turn to fall into the same trap. The show… has only just begun…"
"And what makes it even more laughable…" Black Zetsu's face remained pitch-black and expressionless, yet his tone was deep, biting, and dripping with mockery, "…is what makes you so certain that you are different from Obito or Nagato? Why do you believe… that you are the one truly in control of everything?"
"What are you talking about?!"
Every single word that came out of Black Zetsu's mouth felt like a sharp blade piercing Madara's heart. He stared in shock and disbelief. "Black Zetsu… how could a mere creation like you… subdue someone like me, the Ten-Tails Jinchūriki?!"
"A mere creation like me…"
If Black Zetsu's face hadn't been completely shrouded in darkness, his expression would undoubtedly be one of sharp ridicule.
"You really think I am just a product of your jutsu? Let me tell you the truth: I am neither an ordinary being… nor the manifestation of your will. My true purpose belongs to…"
"Princess Kaguya!!!"
The moment Black Zetsu spoke that name, it was as if he had tugged on the strings of some invisible force. Instantly, an immense, ancient will descended upon the entire world.
Princess Kaguya?!
"The name Black Zetsu just said… wasn't that the person the Sage of Six Paths mentioned in the spiritual realm?!" Sasuke was the first to react, recalling the conversation they had just had.
"What's going on…? Why are they fighting each other now?!" Meanwhile, ever-thick-headed Naruto was still completely confused by the sudden turn of events.
"Kaguya Ōtsutsuki, huh…"
Unlike everyone else, Kaoru looked down with an expression of keen interest and curiosity.
Although he had known this name well from the original story, this was actually the first time he had heard it spoken by someone native to this world.
"So… Madara…"
Black Zetsu's voice trembled slightly with suppressed emotion. For him, the moment he had schemed and waited thousands of years for had finally arrived.
Since ancient times, he had been secretly manipulating events. He fueled the bitter, endless war between Indra and Asura—the two sons of the Sage of Six Paths. Even after their physical forms were destroyed, their chakra did not vanish.
Instead, it continued to reincarnate throughout history, reappearing time and again within the Uchiha and Senju clans, ensuring the cycle of hatred and conflict would never truly end.
Finally, near the close of the Warring States Period, Black Zetsu saw his opportunity take shape in the form of Madara Uchiha—the reincarnation of Indra from that era.
"So, just like Obito before you… you have outlived your usefulness. Become the sacrifice that will bring Princess Kaguya back to life!!"
Yin-Yang Release: Spiritual Possession!!!
As Black Zetsu's voice fell, an infinite surge of mysterious power erupted. Starting from the wound in Madara's chest—where Black Zetsu's arm had pierced through—countless black cracks rapidly spread across his entire body, looking terrifying and ominous.
"AAAAAAHHHHHH!!!"
Unbearable agony wracked Madara's entire being. His desperate, agonized screams echoed across the entire battlefield.
Madara had been confident that even if Zetsu betrayed him, it wouldn't matter, believing the creature simply lacked the power to do anything significant.
But clearly, Black Zetsu's true power far exceeded his expectations, and now Madara was paying the painful price for his arrogance and overconfidence.
Even Kaoru found it difficult to imagine just how much suffering Madara was enduring. After all, this was a man whose will was as tough as steel—for him to scream in such utter agony… the pain must have been truly unimaginable.
Kaoru remained floating calmly in mid-air, watching everything unfold below him. His scarlet Mangekyō Sharingan was constantly analyzing and predicting how the situation would develop next.
"What's happening to him?! That volume of chakra is absolutely immense!!"
Naruto, who now possessed the power of Yang Release and Six Paths Senjutsu, stared in shock at Madara's writhing form, sensing the terrifying energy radiating from him.
"It looks like Madara has completely lost control of himself…" Sasuke's Rinnegan also observed the situation closely.
He noticed the drastic transformation occurring within Madara's chakra signature. "…And this… it doesn't feel like the chakra of the Ten-Tails at all…"
"Is Madara reaching his limit…?" Kaoru whispered softly, watching Madara trapped in agony. "But this quantity of chakra…"
Through his eyes, Kaoru could clearly see deep underground—a massive ocean of chakra surging violently, gathering strength and waiting to erupt. The sheer scale was indescribably vast.
"Kaguya Ōtsutsuki is about to awaken… it seems I'll need to take action…" Kaoru thought to himself, watching Madara's twisted form.
Just as Kaoru prepared to intervene—
BOOM!!!
Suddenly, the ground beneath everyone's feet exploded violently. Massive pillars of chakra shot straight up toward the heavens!
The ocean of energy deep underground had reached its limit and burst forth, tearing the earth apart completely.
Huge chunks of rock were thrown high into the air, sending Naruto and Sasuke flying backward from the sheer force of the eruption.
"It's chakra… So much chakra is gushing out from underground…"
Protected inside his Perfect Susanoo, Sasuke and Naruto stared in disbelief at the massive columns of energy surging from the broken earth below them.
"AAAAAAHHHH!!!"
Meanwhile, Madara's body—now completely overtaken and controlled by Black Zetsu—began to swell and expand rapidly.
He was being forced to absorb the colossal ocean of chakra erupting from the ground, growing larger and larger until his form became completely distorted, eventually transforming into a massive sphere of flesh and energy.
"This is bad… We have to stop him before he finishes whatever he's doing!!"
Sasuke's Rinnegan flashed with urgency as he watched Madara ballooning in size.
"While he's still absorbing the energy… hurry, we have to stop him now!!"
Even Naruto, usually so slow to catch on, immediately understood the severity of the situation upon seeing Madara's terrifying transformation.
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