Rumble—
As the force of the punch dissipated, Shinji turned toward the mountain behind him. It had been leveled. He frowned.
"In terms of power, it certainly lives up to a Rinnegan Dōjutsu, but... I'm not convinced it's Yin Release..."
While Shinji was still puzzled, Nobihi shouted again, "Nii-san, look out!!!"
"Hm?"
Shinji froze. He turned, and his pupils contracted.
On the shattered ground, Nobihi's left eye was a dark-gold Rinnegan. His right, however, had become a stable, dazzling Eternal Mangekyō Sharingan!
"This is..."
Realization dawned on Shinji. "I almost forgot. If the Golden Rinnegan evolved under the influence of Urashiki Otsutsuki's cells, then the Six-Tomoe Rinnegan is Nobihi's own power..."
"He awakened it himself by combining Indra's and Asura's Chakra. Of course he can switch it off himself and retain his Mangekyō Sharingan. It's nothing like Sasuke's eye, which was entirely bestowed on him!"
With that thought,
Shinji grew even more curious about how much power Nobihi could wield after this transformation.
He nodded. "Come on. Don't worry about hurting me. Show me everything you've got!"
Nobihi stared at Shinji in the sky, worry flickering through his eyes.
He took a deep breath.
Hum—
In an instant, Nobihi's Mangekyō Sharingan contracted. Within his scarlet eye, the scalpel-shaped pattern spun sharply!
"Yatagarasu: Divine Crossing!!!"
At his roar, black Chakra flames engulfed Nobihi's body, and seven pitch-black Truth-Seeking Orbs appeared one by one behind him!
Surprise flashed through Shinji's eyes. "Six Paths Mode? This kid... really is a genius. But only seven Truth-Seeking Orbs. His power is still incomplete. Looks like it's time he ate the Chakra Fruit."
"As for Yatagarasu... back when he had the Mangekyō Sharingan, this Dōjutsu was called Instant Bone. Did it grow stronger after he gained the Eternal Eye?"
But
Shinji's surprises were far from over.