Sasuke and Indra

"Eternal Mangekyō? It seems that Itachi has told you, then I have nothing to hide. But before that, Sasuke, I want to show you something."

"What is …"

Before Sasuke could finish his sentence, a pair of ice-blue Rinnegan appeared in his mind. Then Sasuke felt his eyelids getting heavier, and he gradually lost consciousness.

He didn't know how long, but when Sasuke slowly opened his eyes, a group of Chakra appeared before him. A group of Chakra that made him feel at ease.

Sasuke's subconscious reached out and touched this Chakra, but the Chakra ran away, and Sasuke's body chased after it. After continuing chasing, Sasuke found that the appearance of this Chakra had changed, and he gradually became into the shape of a human.

Looking at the human-shaped Chakra, Sasuke stopped because that Chakra looked like him.

Sasuke was a little stunned, and its shape changed again in the blink of an eye.

It became another person.

"This … this is, Uchiha Madara!"

Uchiha Madara is the most famous person in the Uchiha Clan. He looks like Sasuke.

Just as he shouted Uchiha Madara's name, the human-shaped Chakra changed again. This time he became someone he didn't know. The appearance of human-shaped Chakra changed a dozen times, and eventually, he became a person with three tomoe Sharingan.

Looking at the person in front of him, Sasuke was a little flustered because this three tomoe give him a great sense of oppression.

(Ps: The memories of Uchiha Obito and Rikudō Sennin in the manga and the official materials released by the late-stage said that Indra was born with three tomoe Sharingan, and there was no form of Mangekyou Sharingan, and Sharingan would not be closed. When fighting with Asura, Susanoo also started with three tomoe. The anime settings are different from the manga, so the settings on the manga and the official databook are used here. After all, the manga was canon as it was written by Kishimoto. )

Sasuke clenched his teeth and opened Mangekyō, but even with Mangekyō's gaze on this indifferent three tomoe, Sasuke still felt the chill.

Just as Sasuke didn't know what to do, the human-shaped Chakra said, "Good eyes, but the bloodline is not complete."

Sasuke froze, then watched the person in front of him with more alertness.

The human-shaped Chakra didn't care about Sasuke's alertness and said, "I didn't expect to have many descendants. But is my descendant bloodline already come so thin to this level?"

"Descendant? Who the hell are you?" Sasuke asked.

Human Shaped Chakra laughed and said, "Me? My name is Indra, the ancestor of the Uchiha Clan."

"The ancestors of the Uchiha Clan?! How is this possible!"

Sasuke didn't believe Indra's words and unconsciously took a few steps back to distance himself.

"Hehe, it's normal for you to find it hard to accept it. Let me prove it to you then!"

After that, Indra's eyes flashed red light, a row of purple ribs appeared around his body.

"Susanoo! How can three tomoe Sharingan use Susanoo?!"

"This is not three tomoe Sharingan, but Mangekyō. It is the power I get from killing my best friends and subordinates. It's just that my Mangekyō does not change like the pattern in your eyes. This is why my bloodline is purer than you."

"Bloodline? What exactly is the bloodline you keep saying?"

"Uchiha Clan are the descendants of Rikudō Sennin, you know that right?"

Sasuke nodded, and he had heard of it long ago.

"I am the eldest son of Rikudō Sennin. I was born to inherit the bloodline of father Ōtsutsuki Clan, as well as his Sennin eyes and Powerful Spiritual Strength, which is Sharingan. I have had three tomoe Sharingan since I was born. I have shown a high level of innate talent in the use of Chakra… I helped my father to perfect Ninja Sect and discovered the attributes and applications of Chakra. But when he chose who to become the Ninja Heir, father chose my idiot younger brother Asura. I was dissatisfied with Father's decision. I immediately rebelled against Ninja and started a battle with Asura, which continued until the end of our lifespan…

…Before dying, I reserved my Chakra for my descendant and let the descendant help me to continue fighting against the descendant of Asura. Asura did the same thing. While my Chakra is in the Uchiha Clan, the Asura Chakra is in Senju and Uzumaki. My Chakra has experienced many times of reincarnation, and the power is getting thinner and weaker. I have no choice but to let my consciousness fall asleep, but without the help of my consciousness, Uchiha Clan's bloodline is becoming more and more impure, and finally, even opening Mangekyō becomes something really hard to do…

…The last time I woke up was about a hundred years ago. At that time, my Chakra was attached to a person named Uchiha Madara. From him, I learned that Mangekyō of the Uchiha Clan would cause blindness of the wielder because of excessive use and bloodline problems."

Hearing that Sasuke became interested, he quickly asked: "How do you cure Mangekyō blindness in Uchiha Madara?"

Indra shook his head and said, "At that time, I did think of various ways to help Uchiha Madara maintain his eyes. Unfortunately, I failed. In the end, his younger brother gave his Mangekyō to Madara. With two brothers, Mangekyō becomes one, it gains more power and it will never be blind. It can even be comparable to my eyes. Uchiha Madara named these eyes Eternal Mangekyou Sharingan."

"Eternal Mangekyo Sharingan! So it turns out to be …."

"Oh? Uchiha Sasuke, it seems you are interested in the Eternal Mangekyou Sharingan!"

Sasuke nodded. "My big brother also owns Mangekyou Sharingan, and he chose to leave me his eyes to help me open the eternal Mangekyō."

Indra laughed and said, "Don't disappoint your big brother's eyes!"

"Yes! Of course not!"

"Well, I should leave now after saying so much. After all, it's thanks to this person's power that I can come out. There is one last thing. I hope you can help me find the answer."

"What's the matter? You are my ancestor, I will try my best to help."

"I want you to help me end the battle with Asura for so many years... No matter if I win or lose, this brother fight should end. Of course, if you win, remember to give Asura descendants a few more punches for me. You should know who they are, or do you need me to tell you?"

"Well, I know! I will do it for you, and teach him well for myself!"

"Haha! Okay, then I'll wait for the day you punch him!"

After that, Indra became Chakra again, and Sasuke woke up.