The truth
A glint flashed in Kangetsu's eyes. Among all the people in the entire Warring States Period, only a handful could control Uchiha Izuna so easily! Don't assume that Uchiha Izuna is weak just because Kangetsu and Uchiha Madara are powerful!
Uchiha Izuna was also very powerful, at least in the current Warring States Period, he was considered a significant figure. Therefore, it's clear that only a few people could control Uchiha Izuna, but the most suspicious one is Black Zetsu!
Because some of those who could control Uchiha Izuna were dead. Those who were alive were just a pile of trash in Kangetsu's eyes, and no one dared to provoke Kangetsu. So, apart from Black Zetsu, there was no one else!
Kangetsu recognized the target, looked at Uchiha Izuna, nodded, and said coldly, "Izuna, I know you don't want to live this way, but because of this technique, your original body is gone, and there are Ninjutsu that can revive you."
Therefore, I will seal you away and let you slumber in the space within my eyes. I will revive you when I have the power to do so!
Kangetsu's eyes flashed with a sharp light, but within that light lay an undeniable authority!
Uchiha Madara at Kangetsu, his eyes wide, his Eternal Mangekyō spinning rapidly, as if forming a complete circle. Looking at Uchiha Madara Kangetsu, Madara couldn't help but ask, "Kangetsu, is there any way to revive Izuna? What is that method?!"
Uchiha Madara was extremely excited; you could tell from his trembling hands. The Uchiha Clan, especially the brotherhood they shared, could generate a terrifying obsession!
Kangetsu followed Uchiha Madara Uchiha Madara's gaze, looking at him intently, her eyes lingering on Uchiha Madara. After a moment of contemplation, she finally let out a long sigh and said, "The Uchiha Clan's records state that the Sharingan has the ability to continuously evolve! One-Tomoe, two Tomoe, Three-Tomoe, Mangekyo Sharingan! These four are the evolutionary sequence passed down within the Uchiha Clan, and many people know how it evolves!"
Above this is the method of evolution I invented: the Eternal Mangekyo Sharingan! Using my own brother's eyes, it evolved into the Eternal Mangekyō Sharingan! But this is not the final form of Sharingan evolution. Above this is another form, which is the legendary Rinnegan!
"Among the abilities of the Rinnegan, there are probably Ninjutsu capable of reviving others!"
At this Kangetsu, Uchiha Madara stared at Kangetsu in shock and exclaimed, "Rinnegan! How is it possible that the legendary eyes are actually an evolved form of the Sharingan? But how did it evolve!"
Kangetsu looked at Uchiha Madara and said, "I don't know the specifics of how it evolved, but you once possessed the Rinnegan for a period of time! During our battle, your eyes, under the burst of power, had already taken the form of the Rinnegan. But why it appeared, I think it's related to that thing inside your body, so you'll have to investigate it yourself!"