At this time, Zhang Yue's spiritual power has increased tenfold, and this increase makes Zhang Yue feel unbelievable, and he even can't believe that a pair of reincarnation eyes can improve people's mental power so much.

Let's not talk about Obito and Nagato in the manga plot, after all, it is something that has not happened yet, and it can only be used as a reference, just talking about Uchiha Madara, as Zhang Yue, who has just fought with Uchiha Madara, is still very clear about how strong Uchiha Madara's mental power is, but in fact, even if it is Uchiha Madara, his mental power does not have to be strong Zhang Yue's mental power.

If the Reincarnation Eye can really increase the spiritual power of others tenfold, wouldn't it mean that Madara Uchiha's spiritual power before opening the Reincarnation Eye was also equivalent to Zhang Yue before?

But that's not possible.

Although Zhang Yue's previous mental power has also increased with his efforts, you must know that the original Zhang Yue's mental power level is a very ordinary water product among the top ninjas, and before he transplanted the reincarnation eye, his mental power can only be compared to a good level among the top ninjas, and those top ninjas who are good at illusion will not be worse than him at that time. Not to mention those who are worthy of being called illusion masters among the top ninjas, such as Uchiha Itachi and Uchiha Shisui, who are both top in terms of mental power.

And before Madara Uchiha opened the eye of reincarnation, his spiritual power was obviously beyond his two juniors, and it was even a level that mortals could not reach.

Hei Jue's memories can also confirm that although after opening the eye of reincarnation, Madara Uchiha's spiritual power has indeed increased a lot, but it has only increased by half.

But soon Zhang Yue reacted, speaking of which, he was just shocked by the surge in mental power, and he thought a lot after calming down a little.

Zhang Yue thought about it, the increase in spiritual power brought by the reincarnation eye may not be proportional, it may increase by a fixed amount, or it will increase to a limit, or there are many other possibilities......

However, the speculation of increasing a fixed amount of spiritual power was denied by Zhang Yue immediately after it appeared, because Zhang Yue's mental power is now basically equivalent to the spiritual power after Madara Uchiha opened the eye of reincarnation, thinking of the comparison between the mental power before the two have the eye of reincarnation, obviously, the amount of spiritual power increased by the two cannot be the same.

After pondering for a while, Zhang Yue estimated that it should be the most likely scenario that the Reincarnation Eye would increase the spiritual power of the true owner to a limit, not only because his spiritual power at this time was basically equivalent to that of Madara Uchiha, but also because, at this time, Zhang Yue vaguely felt that his spiritual power had reached a certain limit, and it was difficult to improve it again.

In fact, Zhang Yue's feeling is indeed very accurate, at this time, he was still the spiritual power of the Uchiha Madara before his death has indeed reached a limit, if he can break through again, then it will naturally be a qualitative change, and he will enter another world, but the eye of reincarnation can only raise the spiritual power of the existence that really has it to this limit, if you want to break through, the difficulty is even more than opening the eye of reincarnation.

As for what it is to really have the eye of reincarnation, the biggest embodiment is the feeling of blood connection mentioned earlier, which is not something that can be possessed after transplantation alone, for example, Nagato or Uchiha Obito in the manga plot Although they have both transplanted reincarnation eyes, they can only be used reluctantly, and the reincarnation eyes still do not belong to them.

Madara Uchiha is the opener of the eye of reincarnation, so he can really have the eye of reincarnation, and Zhang Yue is completely because he is special as the Ten Tails, as the starting point of chakra in the ninja world, no matter what he transplants into his body, he will really become something that belongs to him.

After having some guesses in his heart, Zhang Yue couldn't be completely sure what was going on in a short period of time, but it was also a good thing to say that his mental strength had skyrocketed.

"Since the spiritual power has reached a limit, or a bottleneck, I don't know what year and month I have to wait until I want to break through, why don't I eat a Star Enhancement Fruit first and see how effective its enhancement is?" Zhang Yue thought about this, and wanted to take out a strengthened fruit.

But then, Zhang Yue thought of another thing.

"By the way, since my spiritual power has improved, then I should be able to refine more chakras, yes, hurry up and try it, and then eat the enhanced fruit later."

For a long time, the maximum amount of chakra that Zhang Yue can refine depends on Zhang Yue's spiritual energy, after all, even if his body is in a weak state now, he never has to worry about the lack of physical energy, what he lacks has always been the spiritual energy combined with physical energy, as long as the more spiritual energy, the more chakra he refines.

At this time, his spiritual power increased tenfold, which basically meant that the amount of chakra he was able to refine had also increased tenfold.

Thinking like this, Zhang Yue immediately began to refine the chakra.

This will not work the chakra ratio, the spiritual energy and the body energy began to be refined and fused in the simplest ratio of five to five, and soon, a large number of chakras were refined and circulated in Zhang Yue's body, and gradually, the number of chakras refined by Zhang Yue has reached the level of tailed beasts, and soon surpassed other tailed beasts except for the nine tails.

In the end, when the amount of chakra refined by Zhang Yue reached the limit that he could reach, the amount of chakra had already exceeded the amount of ordinary tailed beasts by about thirty percent.

And at the moment when the chakra refined by Zhang Yue was comparable to that of an ordinary tailed beast, Zhang Yue's body automatically began to produce a wonderful change, and soon this change was noticed by Zhang Yue, who had just determined how many chakras he could refine in one breath at this time.

Saying that this change is going on really fast, just when Zhang Yue didn't understand what was going on after noticing, Zhang Yue's head began to itch, and after a few seconds, this itching sensation turned into a pain, as the pain became stronger and stronger, Zhang Yue felt as if something was about to be squeezed out of his huge brain, and sure enough, a few seconds later, the skin on Zhang Yue's head was torn, and a round thing was squeezed out of the skin.

It turned out to be another eye, but unlike the previous nine closed eyes, this one was open!

This is already Zhang Yue's twelfth eye.

Although he couldn't see his face, his own image Zhang Yue could know clearly through perception, and he didn't need to touch it with his hands, Zhang Yue clearly knew that another eye appeared on his head.

"What is this for, there are so many eyes that already affect the image, why are there more and more eyes? You don't want me to evolve into a centipede spirit, right? Zhang Yue was a little speechless for this sudden appearance, not that he really thought it was a bad thing, but he hadn't fully figured out the sudden increase in mental strength, and there was such an incident, and he felt a little overwhelmed.

Sensing this eye on his forehead, Zhang Yue's heart moved:

"Isn't it because the amount of chakra I can refine has reached the level of a tailed beast, after all, my previous nine eyes correspond to the nine tailed beasts that were separated from my body, and when I was able to refine the chakra comparable to the tailed beast, my body automatically got an eye out of my body?"