The rejection reaction continued to occur in Kakashi's left eye. This rejection reaction is much more serious than when he had just got the Sharingan.
As the unique Kekkei Genkai of the Uchiha Clan, Sharingan is not something ordinary person can control.
Throughout the Naruto World, the only outsider who can use it to the point of perfection is Kakashi.
Although Kakashi often collapse after using it in the original work, this is something ordinary people won't be able to achieve.
The Uchiha Clan has experienced three Shinobi World Wars. There is no way the Sharingan never fall to the other Great Shinobi Villages.
So why haven't there been any Sharingan user in other villages?
Even Byakugan which is almost impossible to get as only the main branch can be stolen still fall to the hands of Kirigakure. So why is there no Sharingan in other villages?
The reason is simple. It is because the rejection reaction of Sharingan is so strong that it is far beyond the control of non-Uchiha Clan Shinobi.
From before till now, Kakashi was the only one who suppressed and tamed the Sharingan with his powerful talent.
Although it almost exhausted the original Kakashi's full potential.
As for Danzo, he is only able to do it because of the power of Hashirama's cells. Even so, he can only use the Sharingan to activate Izanagi.
It can be seen that Sharingan's repulsive power is by no means acceptable to the average person.
Originally, Kakashi was able to use a Mangekyō Sharingan, which is the limit for his body, and now that two Mangekyō Sharingan fused together to achieve the Eternal Mangekyō Sharingan, the rejection reaction become even stronger.
The originally Obito's Sharingan has been integrated with Kakashi, but at this time, after being influenced by the Mikaze's Sharingan, the originally integrated Sharingan is also starting to have rejection.
"It can't go on like this."
Kakashi is anxious, but at this time he can't think of any solution.
'If this continues, I'm afraid that this integration will be a failure. At that time, the two Mangekyō Sharingan will be scrapped, and the loss will be too big.'
At this moment, the silver-white Cursed Seal on Kakashi's back suddenly flashed with a burst of white light.
The silver-white Chakra instantly released into Kakashi's body.
"This is..."
Kakashi was astonished. He could clearly see that the silver-white Chakra followed the Chakra Pathway System inside his body and slowly moved towards the Sharingan.
Inside the silver-white Cursed Seal, one of the few silver-white Chakra that had just been merged had disappeared in an instant.
When the silver-white Chakra poured into Sharingan's Chakra Pathway System, Kakashi only felt that there was a cool feeling in his left eye, and the original sharp pain disappeared in an instant!
The integration process that has been interrupted was carried out again.
"What is going on? Why does Senjutsu Chakra offset this rejection?"
Kakashi was a little puzzled, but after thinking about it for a moment, he couldn't find the answer.
When the crisis was lifted, Kakashi felt that the rejection reaction had not completely disappeared, but with the help of the silver-white Chakra, it was no longer as strong as before.
At this time, Kakashi can feel that if his Senjutsu fusion is completely successful, the rejection will also disappear completely.
At that time, Kakashi might be able to completely use the Sharingan like the Uchiha Clan's members. At that time, there is no need to use the Four Symbols Seal to seal the Sharingan.
The integration of Sharingan has not been completely successful yet, so right now, Kakashi is temporarily unable to seal the Sharingan and can only use the medical gauze to wrap his left eye. But, he still covered his left eye with his forehead protector.
However, in doing so, Sharingan will remain in a normally open state and the Chakra's consumption can't be stopped.
And now that the Eternal Mangekyō Sharingan is in a normally open state, it can be said that Kakashi's Chakra reserve has been sealed more than half by this Eternal Mangekyō Sharingan.
Kakashi secretly rejoiced. Fortunately, he only transplanted one Sharingan. If he also transplanted his right eye, his current Chakra reserve would only reach Chunin level. At that time, he won't be able to do anything.
"I didn't expect the Eternal Mangekyō Sharingan to consume so much more Chakra than Mangekyō Sharingan. It's really troublesome."
Kakashi sighed helplessly. This Kekkei Genkai's problem is really making him helpless.
It is not easy to solve it.
Fortunately, Kakashi's Senjutsu Chakra fusion seems to have an ability to solve this problem, so it is worth looking forward to.
"In any case, the Eternal Mangekyō Sharingan is basically completed. Next, I just need to wait for it to be fully integrated."
Kakashi removed the shadow clone and was in a good mood.
Although there were so many changes during the middle, it was all worthwhile because it succeed.
Using Hiraishin no Jutsu (Flying Thunder God Technique), Kakashi returned to Konoha again.
At this time, the sky is still dark, so Kakashi lay on the bed and fell asleep again.
The mental fatigue caused by the integration of Sharingan is not that big.
By the time Kakashi woke up, it was already at noon.
Scratching his silver-white hair, Kakashi climbed out of bed.
"It's really tiring."
After lunch, Kakashi was lazily basking in the sun in his yard, reading "Icha-Icha Paradise", but his door was knocked.
"Kakashi-sensei! Are you there?"
Kakashi was slightly surprised when he heard this. 'This voice is... Sakura?'
Kakashi got up, put "Icha-Icha Paradise" into his ninja bag, and went to open the door.
After opening the door, he saw Sakura and Sasuke.
At this time, although Sakura and Sasuke's faces still looked little childish, they looked much more mature than before.
The two have grown a lot taller.
Seeing the two, Kakashi couldn't help but think of Naruto.
'I wonder what that kid is doing now.'
Kakashi smiled and said: "Ah, it's the two of you. How do you know that I'm back?"
Sasuke and Sakura both showed surprised expressions when they saw that Kakashi was really in the Hatake Clan Residence.
Sakura then said: "Kakashi-sensei, when I went to see Tsunade-sensei today, she told me about it. As soon as I heard it, I immediately went to find Sasuke, and then we came over together."
Sasuke then said with proud manner: "Kakashi-sensei, it's too much that you didn't even say anything to us when you came back!"
Kakashi smiled and said, "Sorry, I have been back in the past few days. But, there are so many things I need to do, so I can't find you two at that time."
When Sasuke heard this, the grievances in his heart slowly disappeared. After all, Kakashi is the Anbu Commander, so he is busy with a lot of things, and Sasuke probably knows a little about it.
At least compared to his father, Kakashi is a lot busier.
Sakura then said, "Kakashi-sensei, Sasuke didn't mean to blame you, but we all missed you, so..."
"Yeah, I know, since you two are here now, come in and sit down."