Kaguya Otsutsuki, Breaking the Seal

After thinking it over, Uchiha Ensei decided it was better to remain vigilant.

He glanced at the chakra in his hand and carefully sensed the aura contained within it.

There was nothing wrong with it. It truly contained the experience Hagoromo Otsutsuki had gained when he separated the Tailed Beasts.

Rather than directly handing over the method, he had shared that portion of his memories.

For Uchiha Ensei, this was indeed more suitable than direct instruction.

But for anyone else...

Forget it. There was no point considering such useless matters for now.

Uchiha Ensei cast aside his distractions and began studying in earnest.

For the Hagoromo Otsutsuki within those memories, Yin–Yang Release seemed incredibly easy, as though it were something instinctive.

But for Uchiha Ensei, it was as though an invisible barrier stood in the way. Although he could achieve similar effects, it was exceedingly difficult.

"There's nothing wrong with the principle. Compared to Hagoromo Otsutsuki, it seems I'm merely lacking something..."

"The Ten-Tails?!"

"That's right. No one taught me Yin–Yang Release, so naturally, no one would have taught Hagoromo Otsutsuki either."

"There isn't much difference between the Rinnegan and the Nine-Tomoe Sharingan. Then the only possible difference is the Ten-Tails."

The thought of gathering the Ten-Tails once more arose in his heart, but Uchiha Ensei quickly cut it off.

Even if he mastered Yin–Yang Release with the Ten-Tails' power, it would not be his own strength.

Since Hagoromo Otsutsuki could master Yin-Yang Power after separating from the Ten-Tails, then he certainly could as well.

After steadying his mind, Uchiha Ensei continued researching Yin-Yang Power.

While Uchiha Ensei researched Yin–Yang Release, the world seemed to have fallen into stagnation. Momoshiki Ōtsutsuki and Kinshiki Ōtsutsuki had yet to appear in the Ninja World.

Clearly, they were plotting something in the shadows.