Kuragami Uchiha took the letter and Swift Thunder and went to Naka Shrine alone.
After entering Naka Shrine, the moment Kuragami Uchiha pushed the door, a faint purple mark appeared instantly in the corner of his eyes. The moment the Sage Mode was turned on, Kuragami Uchiha sensed Black Zetsu's figure in the underground secret room.
'Come in person? You are quite brave.'
Kuragami Uchiha smiled in his heart, then quickly came to the entrance of the underground secret room and walked in.
At this time, Black Zetsu also sensed the arrival of Kuragami Uchiha. After seeing the other party holding a sharp sword and turning on the Sage Mode, his heart tightened.
However, Black Zetsu quickly sorted out his mood, pretended to be calm, and hid behind the stone tablet enshrined by the Uchiha Clan.
After Kuragami Uchiha came to the stone tablet, Black Zetsu slowly spoke: "You are here, my descendant."
Kuragami Uchiha did not say anything and raised his hand to control the Nature Energy around him to set up a barrier beside the stone tablet.
Seeing that Kuragami Uchiha was about to attack, Black Zetsu did not dare to be mysterious anymore and quickly turned into a black shadow and floated out from behind the stone tablet, and said at the same time: "My descendant, please be patient, I have no ill intentions."
"Descendant?"
Kuragami Uchiha sneered: "Why do the rats now like to take advantage of their seniority? The last one pretended to be Madara-sama; which ancestor of my clan are you going to say this time?"
"My descendant, but I am your ancestor. I am the remnant will of Indra, one of the two descendants of the Sage of Six Paths who founded the ninja clan, the very origin of the Uchiha Kekkei Genkai."
'Good guy, this old guy directly added a super generation to fool me, right?'
Kuragami Uchiha resisted the urge of his mouth to twitch and pulled out the sword at his waist.
"My descendant, since you have learned the Sage Mode in the three sacred places, you must have heard of my name. Why bother with swords? My strength is only one-hundredth of what it is, and there is no threat to you. The purpose of my will to exist until now is just to guide the confused descendants to find the true meaning of peace."
"Really?"
Kuragami Uchiha narrowed his eyes and put the sword back into the sheath.
"The one who taught me the Sage Mode did say who the source of our Uchiha Clan's Kekkei Genkai is. Since you say you are the will left by our ancestors, then why not show me the evidence."
Black Zetsu was relieved when he saw Kuragami Uchiha put the knife back, but when he heard Kuragami Uchiha asking him for evidence, he couldn't help but sigh in his heart.
'This guy is much harder to fool than Madara Uchiha.'
However, since Black Zetsu dared to lead Kuragami Uchiha here, he was naturally prepared. He slowly said: "If you want evidence, you might as well take a good look at the contents of this stone tablet with your eyes."
"Stone tablet?" Kuragami Uchiha's eye suddenly turned into the Mangekyo Sharingan, and they looked at the stone tablet in front of him.
"It only records the solution to blindness after excessive use of the power of the Mangekyo Sharingan, but there is no evidence, as you said. These things are also recorded in the materials that only the Clan Head of each generation can view in the clan shrine."
Kuragami Uchiha was a little disappointed after reading the stone tablet.
He came to check in on this stone tablet after awakening the Mangekyo Sharingan. He thought Black Zetsu would come up with something new, but he didn't expect that there would be no change at all.
"Of course, your eyes can't see the truth above because only the Eternal Mangekyo Sharingan can see through the fog above."
Black Zetsu said.
"Are you kidding me?"
Kuragami Uchiha's face turned cold, and his hand was placed on the Swift Thunder. "I don't have any blood relatives who have awakened the Mangekyo Sharingan. Where can you let me upgrade my Sharingan to the Eternal Mangekyo Sharingan?"
"My descendants, please be patient."
Black Zetsu said: "Since my original body went to the Pure Land, I have witnessed the growth of many talented descendants of the Uchiha Clan here. Some of them have evolved the Mangekyo Sharingan to the next level in other ways."
"Really?"
Kuragami Uchiha narrowed his eyes: "For example?"
"For example, a genius who appeared in the Uchiha Clan 700 years ago, Asada Uchiha, like you, awakened the Mangekyo Sharingan and was lucky enough to inherit the Sage Techniques of the three holy places. His eyes also evolved in the process of practicing Sage Techniques and reached the level of Eternal Mangekyo Sharingan."
Black Zetsu said.
"How come I don't know about this? Although the clan doesn't have the habit of recording history in detail, this way of improving Sharingan should be kept by the clan." Kuragami Uchiha frowned.
"Because he failed when he was trying to awaken the eyes next to Eternal Mangekyo Sharingan, and before he died, he also realized that this abnormal way of improving the Sharingan was too dangerous. In order to prevent future generations from being in danger, he completely destroyed the records left behind."
"Then how do you know?" Kuragami Uchiha frowned.
"My descendant, I said, I have been watching the Uchiha Clan here." Black Zetsu said.
After Black Zetsu finished speaking, an ancient scroll floated in front of Kuragami Uchiha.
"This scroll is the backup I left behind. Just think of it as a gift from your ancestor to you, a peaceful descendant. It's up to you to decide whether to learn it or not."
Kuragami Uchiha's eyes moved slightly. After picking up the scroll on the ground, he opened it and found that it was indeed, as Black Zetsu said, a record of the way to practice with Mangekyo Sharingan combined with Nature Energy.
Kuragami Uchiha had never thought of relying on Nature Energy to improve the Mangekyo Sharingan.
'Did this ancestor named Asada Uchiha learn the Sage Technique in the Shikkotsu Woods?'
Kuragami Uchiha's mind moved slightly.
'So, is this thing real, or is it a trap set by Black Zetsu?'
Kuragami Uchiha would not foolishly try what Black Zetsu gave him right after he got it.
However, after successfully cultivating the Sage Mode, Kuragami Uchiha also discovered that Nature Energy has a certain nourishing and repairing effect on the Mangekyo Sharingan.
Although the speed is very slow, the Sage Mode can indeed greatly reduce the consumption of the Mangekyo Sharingan. Therefore, this training method is very likely to be feasible, but Black Zetsu is also likely to have tampered with this scroll.
If Black Zetsu knew what Kuragami Uchiha was thinking, he would definitely cry out for injustice because what he said is true!
This scroll was indeed created by a genius of Uchiha 700 years ago. A genius who had even surpassed the reincarnations of Indra and Asura of that era and nearly ended the age of chaos.
However, this genius named Asada Uchiha failed and died when he was trailblazing the way forward.