Exploiting a Bug in Impure World Reincarnation?

Yun Yan then explained this to Uchiha Fugaku and Uchiha Itachi:

"Uchiha Shisui really kept it a secret. His Mangekyou Sharingan eye technique was never revealed from beginning to end, but unfortunately, I still found out."

Let me just tell you directly, Itachi Uchiha's Mangekyou Sharingan eye technique is called Kotoamatsukami, which is an ultimate genjutsu.

The effect of this Genjutsu is nothing other than to fundamentally and directly change a person's thoughts, firmly control their mindset, and even turn them into one's own slave or puppet.

Upon hearing this explosive news, Uchiha Fugaku and Itachi Uchiha, father and son, widened their eyes simultaneously. Their hearts were filled with shock and utter disbelief, and they were also deeply shaken.

What!? Uchiha Shisui's Mangekyou Sharingan technique is Kotoamatsukami!?

This Kotoamatsukami is the ultimate Genjutsu, its effect being to fundamentally change a person's mind!?

This is outrageous! This is too much! It's ridiculously outrageous! Where did this Mangekyou Sharingan come from? It's too domineering! It's too ruthless!

Uchiha Fugaku and Itachi Uchiha were intelligent people. Even though they were extremely shocked, their minds quickly processed what was happening and they understood the power of Kotoamatsukami.

Unlike other Genjutsu that control others through hypnosis, it directly changes a person's thoughts and mindset at their root.

This kind of forceful and domineering change is terrifying; just thinking about it makes my scalp tingle!

Even now, when Uchiha Fugaku and Itachi Uchiha recall it, they can't help but break out in a cold sweat.

Why did Uchiha Shisui keep his Mangekyou Sharingan's Kotoamatsukami technique so well hidden?

Is he trying to control someone? Or has he already controlled someone? Or does he have some kind of plan or conspiracy?

What should you do if someone, or even someone close to you, claims to be controlled by this Kotoamatsukami) and having their thoughts altered? Is there any way to break free?

Following this line of thought, Uchiha Fugaku and Itachi Uchiha became increasingly frightened, their hearts still pounding with lingering fear.

For this reason, even the regret that Itachi Uchiha had felt for Uchiha Shisui gradually disappeared.

There's no way around it; it's just that Kotoamatsukami's effects are too domineering, too excessive, and too ruthless. Just hearing about it makes people tremble with fear, and it's the kind of thing that makes people instinctively wary and disgusted.

It could even be said that if Uchiha Shisui's Mangekyou Sharingan techniques were ever revealed, he would immediately be condemned by everyone and become an enemy of the entire world! He would be ostracized by the whole world!

There's no way around it; this is the side effect of power.

It's like a nuclear bomb falling into the hands of an ordinary person. No matter who that person is, whether they are good or bad, they are the enemy of the whole world!

This is reality, helpless and cruel.

After a period of extreme shock and panic, Itachi Uchiha was the first to react. He was startled and suddenly realized something was wrong, looking at Yun Yan with some confusion:

"Senior Yun Yan, such powerful illusion techniques and such powerful Mangekyou Sharingan eye techniques must come at a price, right?"

After Itachi Uchiha said that, his father Uchiha Fugaku, also realized what was going on and nodded repeatedly.

"That's right. If Uchiha Shisui could really use Kotoamatsukami at will without any restraint, then... this world would have been in chaos long ago, and we would have just surrendered."

Looking at the father and son, Yun Yan shook his head with amusement and continued to explain to them:

"That's not the case. Such an overpowered Mangekyou Sharingan eye technique naturally comes at a price."

As far as I know, every time Uchiha Shisui Kotoamatsukami, Kotoamatsukami would enter a cooldown period during which the technique could not be used and required a long recovery time.

As for how long this cooling-off period will be... I'm not entirely sure, but it won't be short; it seems like it will take several years.

Upon hearing Yun Yan's explanation, Uchiha Fugaku and Itachi Uchiha immediately relaxed considerably.

"That's good, that's good. I knew such an overpowered Mangekyou Sharingan technique wouldn't come without a price. It turns out that's exactly what happened."

"However, we can't let our guard down. After all, the effect of this Kotoamatsukami is just too... too much."

Seeing Itachi Uchiha's hesitant and troubled expression, Yun Yan nodded in deep agreement:

"Yes, that's exactly right."

Forcibly changing someone's mind is going too far and is too heartless.

The Sharingan is also known as the eye that reflects the mind, and the special Dōjutsu that arise when the Mangekyō Sharingan are also related to the person's ideological inclinations.

I suspect that it's because Uchiha Shisui himself wasn't a good person. He clearly had a screw loose, yet he insisted on influencing others, forcing them to agree with his ideas, and forcing them to also have screw loose.

It's estimated that it was precisely because Uchiha Shisui possessed this characteristic that the Dōjutsu he awakened with his Mangekyō Sharingan were such terrible Dōjutsu as Kotoamatsukami, which directly alters other people's thoughts.

It would have been better if Yun Yan hadn't brought it up. But once he did, Uchiha Fugaku and Itachi Uchiha, father and son, started to think about it and realized that what he said made a lot of sense; it seemed to be true.

On one hand, the Sharingan is also known as the eye that reflects the soul. The Dōjutsu awakened by the Mangekyō Sharingan are indeed related to a person's thoughts and desires.

On the other hand, as the saying goes, "Do not do to others what you would not have them do to you." Don't impose on others what you don't like, let alone try to change their minds in a domineering, ruthless, and unreasonable way. This approach will only make people more disgusted.

Thinking of this, Itachi Uchiha felt somewhat gloomy. He seemed to finally understand what kind of person Uchiha Shisui was.

He's definitely not a good person, not a good person at all. I was so wrong to trust him.

Looking at Uchiha Fugaku and Itachi Uchiha, Yun Yan brought the topic back:

"So let's go back to the Impure World Reincarnation. Why was I so determined to completely dispose of Uchiha Shisui's body? Why was I so determined to eliminate the possibility of Uchiha Shisui being Impure World Reincarnation?"

The reason is simple: I wasn't guarding against Uchiha Shisui; I was guarding against his Mangekyou Sharingan's Kotoamatsukami.

Uchiha Shisui's Mangekyō Sharingan was destroyed along with his body, so there's no need to worry about that.

But if Uchiha Shisui were to be Impure World Reincarnation using the Impure World Reincarnation technique, would a resurrected, Uchiha Shisui still be able to use Kotoamatsukami? Would there be a cooldown period before he could use it?

I'm guarding against this!

Seeing the wide-eyed, shocked expressions of Uchiha Fugaku and Itachi Uchiha, Yun Yan continued to express his concerns:

"This is actually a paradox: can Uchiha Shisui, Impure World Reincarnation, really use Kotoamatsukami without limit?"

This sounds absurd; it seems like one shouldn't be able to use Kotoamatsukami without limit.

But you can't gamble on something like this. I must completely eliminate this possibility.

Besides, there is another similar paradox, which is the Eight Gates.

I'm sure you Uchiha Fugaku, have heard of the Eight Gates.

You've probably heard about how Might Guy's father Might Duy, used this technique to achieve such a glorious victory against the Seven Ninja Swordsmen of the Mist of the Kirigakure.

The Eight Gates can greatly overdraw the body, causing one's combat power to increase steadily. Each time a gate is opened, the combat power increases dramatically. When the Eighth Gate, the Gate of Death, is opened, the combat power will soar to an unimaginable level!

This leads to the paradoxical problem.

If Might Duy were Impure World Reincarnation using Edo Tensei, would he be able to use the Eight Gates? Could he use the Eight Gates without limit? Could he even open the Eighth Gate, the Gate of Death, without limit?

After all, opening the Eighth Gate, the Gate of Death, grants unimaginable and terrifying combat power, but the user is certain to die after using it.

But what if it were used by a living dead Impure World Reincarnation? After all, such living dead cannot die.

What would happen if someone who can't die used the fatal Eighth Gate, the Gate of Death? Could they use it indefinitely and never die?

"Wouldn't that make things extremely outrageous, excessive, and terrifying?"

Hearing Yun Yan's theory and his concerns, Uchiha Fugaku and Itachi Uchiha were dumbfounded.

Goodness, no one has ever thought about this before, or rather, no one has ever thought of using this method to Impure World Reincarnation.

However, it must be said that Yun Yan's concerns and worries are quite necessary, because if this bug really gets stuck, the consequences would be unimaginable, and many things would fall into chaos.