Secrets of the Progenitors, Minor Details!

Whoosh!

Accompanied by a Kamui Vortex, Yu brought Yushiki to the mountain behind Feather Emperor City...

Yushiki exclaimed, "The ocular technique you just used... could it have been Kamui?"

Yu said, "Oh? You know about Kamui too..."

"How could I not? It's the only space-type ocular technique that combines both offense and defense. Such a distinctive ocular technique is renowned throughout the Ōtsutsuki Clan! Ōtsutsuki Koshiki, the only one to possess the power of Kamui, ranks sixty-sixth in strength within the main family, but his fame is almost enough to stand alongside Ryushiki's! Where did you get Kamui!?"

The well-informed Ōtsutsuki Yushiki actually looked at Yu with intense envy. She had not shown such an expression even after learning that Yu possessed the Rinnegan, the power of the Ten-Tails, and even Sage Power.

Yu answered truthfully, "Well, I had Kamui before I awakened the Rinnegan..."

Yushiki tilted her head. "Before the Rinnegan? You mean the Sharingan? The Sharingan's perception and other functions are inferior to the Byakugan. In our clan, we can't even be bothered to switch to it. Besides, can the Sharingan use ocular techniques?"

Uh... Yu roughly understood. Beneath the Ōtsutsuki Clan's Byakugan, there was almost always a Sharingan hidden away. They did not need to follow the evolutionary path of the Mangekyo Sharingan and Eternal Mangekyo Sharingan. Though Yu did not know the exact conditions for an Ōtsutsuki to awaken the Rinnegan, if they failed to do so, their Sharingan would merely be an inferior product in every respect compared to the Byakugan. They would not even deliberately switch to it for use!

Boom!

At that moment, a figure landed heavily, kicking up a cloud of dust.

As the dust dispersed, Uchiha Madara slowly rose to his feet. The hollow of his left eye was concealed by