Roll back from Naruto

Being able to freely use memory probing, using mental power to invade other people's brains and then spy on other people's memories is only a basic prerequisite for memory manipulation.

For ordinary ninjas with mediocre qualifications, rough use of memory probing can easily cause irreversible mental damage to the target, not to mention the need to modify or delete the memory.

In Konoha's Ninja Retirement Department, a seemingly ordinary but mysterious department, most of the ninjas who can perform the special task of "memory manipulation" have very rough skills in Aragaki's view. , extremely rough

However, these ninjas who mainly have the surname "Yamanaka" and whom he regards as rough skills are the group of people in Konoha who have the highest attainments in the field of "spiritual ninjutsu".

For humans to perform the secret art of memory operation, the principle is actually not complicated.

For example, after a certain war, there appeared a certain ninja who was not seriously injured physically, but whose mental will had completely collapsed, and was even "crazy" to the point where he was unable to perform normal tasks and participate in combat.

Then after the ninja evaluation and diagnosis certificate is issued by Konoha Hospital and approved by the Hokage or other senior personnel, this "useless" ninja will be sent to the Retirement Department, and then the above-mentioned ninja will undergo a special memory modification operation.

Under normal circumstances, what needs to be completely cleared are the memories of the ninja that involve the village, missions, ninjutsu and other aspects that cannot be leaked.

But we must know that human memory is a complex whole that is involved and intertwined with each other, so manipulating memory always affects the whole body.

For example, on the one hand, it is possible that the artist's skills are not high enough and the memory deletion is not precise enough, which often results in accidental deletions or even multiple deletions.

On the other hand, even if the performer accurately deletes a certain memory in the target object, it may cause the target object to have defects in thinking logic and behavioral consciousness, contradictions and even collapse due to the lack of memory.

For example, during the time when Aragaki was exploring the secrets of memory manipulation, he conducted a series of experiments on the target, a spy from Kumogakure.

After Aragaki used his mental power to perfectly probe his memory, the guy didn't even realize that his memory had been spied on.

In other words, Aragaki's memory exploration at this time was so perfect that it would not cause any obvious harm to the target object.

But then, Aragaki intercepted the detailed memories stored in the target's brain for the past three months and performed special processing and operations on them.

That is to eliminate every behavior of this ninja regarding "actively refining chakra" in the past three months. I have to say that this is indeed a big project.

After all, for ninjas, actively refining chakra is something that must be done almost every day. It can even be said that refining chakra is something that ninjas have turned into instincts through years of training.

Ninjas produce chakra all the time, but it is naturally incomparable to the amount of chakra produced by actively meditating, operating, and fusing cellular energy with mental power.

So what Aragaki deleted was the memory point where this ninja took the initiative to refine chakra in three months.

The final result was that on the first day, the ninja became anxious and frightened, and even thought that he had been completely deprived of the "chakra" in his body.

However, the ninja soon discovered that the chakra in his body was still functioning normally and had not disappeared. He had just "forgot" how to actively refine chakra.

But again, this process did not last long, because Aragaki only eliminated his relevant memories within three months.

As the ninja gradually calmed down and slowly recalled, he soon found the way to "actively refine chakra" from deeper memories. He even recalled the first time he tried to refine chakra when he was young. go through.

Therefore, Aragaki can probably draw a conclusion from this, that is, it is difficult and almost impossible to completely lose the ability of Kumogakure's secret agent to actively extract chakra through memory manipulation.

And if he really wanted to do this, he would have to delete his memory from the time he first tried to refine chakra as a child, and then throughout his life so far.

After all, for a ninja, refining chakra is just like eating and drinking. Is it possible to make a person forget to eat and drink?

Even theoretically, even if all memories of a ninja's chakra refining are deleted, in reality it cannot change the fact that it has become a physical memory.

And it is impossible to say that after a period of time, this ninja will spontaneously master the technique of refining chakra.

The experiment has reached the next stage. This time Aragaki is not trying to make the target object "forget", but to "change" it.

Through memory modification and mental stimulation of specific areas of the brain, the target is convinced of a certain "belief".

The topic Aragaki tried this time was that chakra is a poisonous substance.

Chakra is a toxic substance. Continuous refining of Chakra will accelerate the failure of the original cells. At the same time, when Chakra flows through the body's organs and organs, it will also cause a series of injuries and complications. Depending on the person's condition, The corrosive effect of chakra on the human body will last from several years to more than ten years, eventually leading to the abnormal death of the ninja himself.

Aragaki then "replaced" this description with the "words" that the target ninja said to him when he first received chakra refining training when he was young.

What Aragaki did was to make this ninja believe from his childhood memories that chakra is a poisonous substance. However, even if it is poisonous, as a ninja, in order to protect the village and fight, he has to refine and use this "poison" .

The memory manipulation of this ninja lasted for nearly a week, and the final result was naturally obvious. The ninja had given up on the basic ability of a ninja to actively refine chakra on time every day.

The person who underwent this experiment was a Konoha ninja criminal. He was not a death row prisoner, but he would be imprisoned for life.

So now this criminal has completely lost the idea of ​​continuing to be loyal to Konoha as a ninja, so he voluntarily gave up refining chakra, a "poisonous" substance, because he wanted to live longer and didn't want to die.

In fact, what kind of poison is chakra? It can even be said that without the protection of chakra, judging from the harsh environment in Konoha Prison, he would die faster.

However, Aragaki used memory manipulation to make him actively welcome death without knowing it.