Complete Eternal Mangekyō Sharingan

Izumi Uchiha's troubles she confided in Yun Yan were nothing more than difficulties she encountered at the Ninja Academy, whether in her studies or social interactions, or the worries common to girls her age.

To Yun Yan, who had already lived a second life, all of that was trivial. Dealing with a young girl who had just entered puberty was practically effortless for him.

And so, through listening, talking, mutual understanding, and opening their hearts to each other, Yun Yan not only let Izumi Uchiha unburden herself and feel relieved, but also gave her many ways to solve her problems.

As a result, Izumi Uchiha grew even closer to Yun Yan as a friend, and their relationship gradually improved.

Izumi Uchiha could confide in Yun Yan, but Yun Yan could not confide in Izumi Uchiha.

He could hardly tell Izumi Uchiha that he was a transmigrator, could he?

Absolutely not. Yun Yan had no intention of telling even the people closest to him. He planned to take this secret to the grave!

Unable to explain that, Yun Yan could not tell Izumi Uchiha about the unease and anxiety he felt after transmigrating, much less express his fears that he might one day die and see his clan destroyed.

So Yun Yan could only endure it.

Naturally, Izumi Uchiha, with a young girl's innate sensitivity, sensed Yun Yan's inner anguish.

As his friend, Izumi Uchiha naturally wanted to try to comfort Yun Yan and listen to what he had to say.

But what could she do when Yun Yan stubbornly refused to speak? Izumi had no answer at the time.

Later, when Yun Yan became so miserable that he felt he would go mad without someone to talk to, he finally altered his concerns slightly, wrapped them in metaphors, and tried to confide in Izumi Uchiha.

What about Izumi Uchiha?

Smart as she was, she could naturally tell that Yun Yan had not told the truth. Everything he shared was merely metaphorical, but she truly did not understand what those metaphors referred to.

Though she did not fully understand, Izumi still listened attentively, quietly stayed by Yun Yan's side, and gave the newly transmigrated Yun Yan emotional comfort.

Sometimes, when she saw Yun Yan troubled, Izumi would do her best to console him. She would even clumsily offer her own thoughts or solutions.

Of course, Izumi was still young then. What good solutions could she possibly offer? She could not resolve Yun Yan's worries.

But regardless, having such an understanding young girl by his side truly eased Yun Yan's mind considerably.

At the very least, he was no longer consumed solely by distress and unease. He began taking the initiative to change things, to seek a way out, and to find solutions for what lay ahead.

Perhaps because his thoughts became clearer and his mood eased, not long after he confided in Izumi and she listened to him, Yun Yan actually awakened his Mangekyō Sharingan as naturally as water flowing into a channel!

It sounded absurd, but that was exactly what happened!

For others to awaken the Mangekyō Sharingan, they had to suffer terribly. At the very least, they had to lose someone most important to them, endure an overwhelming emotional shock, and even begin to twist in their thinking before they could awaken the Mangekyō Sharingan!

But Yun Yan had not. The moment his mood improved, his Mangekyō Sharingan awakened!

Who could possibly reason with that!?

And what was even more noteworthy was that the moment Yun Yan awakened his Mangekyō, it was already an Eternal Mangekyō Sharingan! It was not some defective Mangekyō Sharingan that would eventually blind its user!

As for the reason behind it... that was a profound matter, one Yun Yan only came to understand later while studying his own Mangekyō Sharingan.

What did a Three-Tomoe Sharingan need to do in order to transform into the more powerful Mangekyō Sharingan and achieve such a qualitative leap?

The commonly used method was an extremely intense external emotional stimulus, using that stimulation to awaken the Mangekyō Sharingan.

But that method came at an enormous cost.

Such a severe emotional shock, combined with the instant surge in power brought by the Mangekyō Sharingan, could easily distort a person's thoughts and even twist their personality.

Sasuke Uchiha and Obito Uchiha were both like that.

Even before Sasuke Uchiha awakened the Mangekyō Sharingan, his personality had not been quite normal. After awakening it, he became even worse.

Compared to Sasuke Uchiha, Obito Uchiha changed even more drastically. After awakening the Mangekyō, he practically became a lunatic!

As for Uchiha Shisui and Itachi Uchiha, there seemed to be no obvious changes in their emotions, thoughts, or personalities after awakening the Mangekyō, but they had undoubtedly still been affected.

That was the drawback of awakening the Mangekyō Sharingan through that method.

But that was not even the greatest drawback. The greatest drawback was that... the Mangekyō Sharingan awakened through this method was actually defective!

That was right, defective!

Most people believed that the Mangekyō Sharingan had two levels: the ordinary Mangekyō Sharingan and the more advanced Eternal Mangekyō Sharingan.

The longer the Mangekyō Sharingan was used, the more its user would gradually lose their sight. Its ocular power would gradually be depleted until they went completely blind.

But as long as it evolved into the Eternal Mangekyō Sharingan, its ocular power would no longer run dry. Continued use would not cause blindness, and the Mangekyō Sharingan's abilities would become even stronger!

But in truth, this commonly accepted belief—or rather, this theory of the Uchiha Clan—was wrong! It had been wrong from the very beginning!

Only after studying his own Mangekyō Sharingan did Yun Yan suddenly realize this.

What ordinary Mangekyō Sharingan and Eternal Mangekyō Sharingan? They should clearly have been called the defective Mangekyō Sharingan and the Complete Mangekyō Sharingan!

Yes, exactly. The Mangekyō Sharingan awakened through emotional stimulation was the defective version.

The Eternal Mangekyō Sharingan achieved by transplanting a relative's Mangekyō Sharingan and replenishing one's ocular power was the true Complete Mangekyō Sharingan!

Why was the initial Mangekyō Sharingan defective?

Because awakening it through intense emotional stimulation was taking a shortcut, a crooked path.

This method could indeed awaken the Mangekyō Sharingan, but because the mind was damaged by the stimulation, continued use of the Mangekyō Sharingan would gradually cause blindness, and its ocular power would steadily run dry.

A Mangekyō Sharingan that would break down with continued use was naturally defective!

Only a Mangekyō Sharingan that would not cause blindness no matter how it was used, that could be used normally without worrying about the burden, was a Complete Mangekyō Sharingan.

In other words, it was also known as the Eternal Mangekyō Sharingan.

Then what should the proper, orthodox method of awakening the Mangekyō Sharingan be?

After further research, Yun Yan concluded that the proper method should be to temper one's spiritual power, making it extraordinarily powerful and resilient. Once it reached the appropriate level, the Mangekyō could be awakened naturally and logically.

And once awakened, it would be the Complete Eternal Mangekyō Sharingan, not the defective Mangekyō Sharingan that would eventually cause blindness.

Thinking about it, that made sense. Why would a Mangekyō Sharingan awakened naturally under normal circumstances cause blindness with continued use? Why would it have the flaw of rendering its user blind?

Only defective, incomplete versions would have such flaws, because they were never complete Mangekyō Sharingan to begin with!

In the end, it all came down to spiritual power as the foundation.

With immense spiritual power, with spiritual power strong enough, a Mangekyō Sharingan without side effects would come naturally. There was no need to worry about anything else.

Then the question returned: how had Yun Yan awakened the Mangekyō Sharingan? And why had he awakened a Complete Eternal Mangekyō Sharingan right from the start?

Naturally, it was because... he had transmigrated here!

After he transmigrated, the original owner's soul had supposedly scattered into nothingness, but in reality... it had been completely absorbed and fused by Yun Yan's soul.

The original owner's soul and Yun Yan's own soul fused into one. Yun Yan's soul was dominant, while the original owner's soul served as nourishment. The result of their complete fusion was that...

Yun Yan's soul had become extraordinarily powerful.

The strength of his soul's essence naturally also drove an enormous increase in his spiritual power.

And the manifestation of that sudden increase in spiritual power was... mental unrest and rapidly shifting emotions.

Yes, that was why Yun Yan had been so uneasy, worried, and full of anxiety during the period right after he transmigrated.

Later, being able to confide in Izumi and spending time with her eased his mind. Once Yun Yan's thoughts became clear, it created the opportunity for his spiritual power to accelerate toward completion!

Finally, his spiritual power became complete and abundant, his soul strength flawless, and the Complete Eternal Mangekyō Sharingan came into being!

Yun Yan's Mangekyō Sharingan... had awakened!