The Forgotten Sensei
patreon
Chapter 76: Itachi's Eternal Mangekyō
🕑 Added 2025-08-27 15:04:30 +0000 UTCThe group made their way to the back of the port to prevent the experimental powers from affecting the ships and other areas.
Shisui and Izumi came along as well, while Mikoto went back to pack her belongings.
"Do you feel that your chakra has increased?"
On the way, Yami asked the two of them.
After the bloodline defects were compensated for, the first thing that changed was the amount of chakra.
When the Sharingan gains additional tomoe and when the Mangekyō awakens, chakra will improve significantly.
"My chakra has increased by about three times its previous level."
Fugaku provided very precise figures.
Apart from eating these past few days, he had spent the rest of his time carefully sensing the changes in his body.
Many times, he felt warmth emanating from his eyes, which made him want to try activating his Sharingan, but he always restrained himself.
"Mine should be about ten times the before."
After hearing his father's answer, Itachi hesitated for a moment before speaking.
He wondered why the difference was so significant, but decided to tell the truth anyway.
Yami nodded and didn't ask any further questions.
"Activate your Mangekyō Sharingan and use the [Susanoo]. Let's see how it feels."
After arriving at an open location, Yami instructed them.
Fugaku and Itachi stood apart and began activating their Mangekyō Sharingan under everyone's watchful gaze.
"Only Itachi's pupil pattern has changed; Fugaku's hasn't."
Yami quickly noticed this and spoke up.
Fugaku's eyes now officially resembled Itachi's original Mangekyō Sharingan pattern, but Itachi's Mangekyō Sharingan, which had belonged to Fugaku, had transformed.
Originally, three windmills with three black dots; those three black dots had become three tomoe. The pattern had completely changed.
"[Susanoo]"
Then, both Fugaku and Itachi activated it.
Two skeletal [Susanoo] in their initial stages appeared before everyone.
"The color hasn't changed."
Yami continued his observations.
Judge, standing nearby, recorded everything Yami said.
Fugaku's [Susanoo] remained brown, while Itachi's [Susanoo] was still fiery red.
Although their eyes had been replaced, [Susanoo]'s colors hadn't changed and remained the same as before.
"Yami-san, I no longer feel the pain that wracked every cell in my body when I used the Mangekyō Sharingan before."
"It feels like using normal ninjutsu, only chakra is consumed."
Fugaku spoke about his condition, which surprised him.
'Is this what it feels like to use our eyes with no side effects?'
"Me too."
Itachi agreed.
Judge continued recording their observations.
Then, both of them released [Susanoo] and began using their Mangekyō eye techniques.
Neither of their pupil abilities had changed, but their power had been enhanced, their effects were improved, and they no longer shed blood with the usage.
Now their combat power was at least thrice as strong as before.
Without the side effects of the Mangekyō, using it in battle was completely different.
Judge carefully recorded every word they said after the surgery.
Next came physical fitness tests, vision tests, chakra nature and shape transformation power assessments, and more; the most detailed data had to be recorded.
It took about an hour to complete these tedious tests.
However, Judge seemed to feel that the data wasn't comprehensive enough and wanted to conduct more tests, but Yami stopped him.
There was no need for useless examinations.
"Itachi, can your [Susanoo] reach the level mine can?"
As they were about to leave, Yami asked Itachi.
Everyone present was momentarily stunned, then their eyes fell on Itachi with surprise.
Although everyone was curious about why Yami's strength had increased so rapidly, they had all restrained themselves from asking.
They simply knew that their clan leader was working hard for them.
But having another person who could achieve the clan leader's perfect [Susanoo] made them feel excited.
Itachi hesitated.
"When Yami-san asks you something, answer him directly and don't hide anything."
Fugaku frowned and spoke with a slightly scolding tone.
After Itachi joined ANBU, he had communicated with him less and kept many things to himself.
Although Itachi had worked hard to change after coming here, his personality was still different from his childhood; he had become more reserved.
"I think I can."
Hearing his father's reprimand, Itachi spoke directly without hesitation.
He had been afraid that if he could do it, but his father couldn't, his father would be unhappy.
So he hadn't said it directly, thinking of explaining the matter to Yami privately later.
"Every bit of combat power helps the clan tremendously now. There's no need to worry. Everyone is working hard to restore our clan."
"Show your strength to your heart's content, Itachi."
Yami spoke seriously.
It also carried a bit of inspiration; after all, the Uchiha were quite fond of such motivation.
Madara, Itachi, Shisui, and Sasuke had all been moved by such words.
"Yes."
Itachi nodded heavily.
Then his pupils rotated rapidly, and [Susanoo]'s skeletal frame quickly appeared around his body.
Standing directly within the ribcage framework, his figure continued to rise.
The [Susanoo] rapidly emerged with armor, wings, and more, a fiery red complete form that was almost as tall as Yami's perfect [Susanoo] appeared before everyone.
"This is truly a marvelous power."
Judge looked at everything in shock.
Although Yami had explained enough beforehand that the ultimate weapon that defeated Germa 66 was power derived from the Uchiha bloodline, he had felt there must be some secret. He hadn't expected it to be so straightforward.
Just by changing a pair of eyes, their strength had improved dramatically…
This was unreasonable!
Yet all of this was happening right before his eyes.
Then, Itachi controlled the [Susanoo] and drew the long sword from its waist, slashing toward the sea.
The powerful strike split the ocean's surface, creating a cut that extended thousands of meters into the distance.
After releasing the attack, Itachi dispelled his [Susanoo] and descended from the air.
Fugaku looked at Itachi with a smile on his face.
Compared to his own abilities, he was happier that his son was excellent.
"I can maintain that level for about five minutes. The chakra consumption is too great to sustain it longer."
"But it's not very taxing on the body. It only requires chakra."
After Itachi landed, he explained the specific situation to Yami.
Hearing this duration, Yami wasn't surprised.
After all, when he had arrived here, Itachi had mentioned that his chakra had increased tenfold.
When Yami's bloodline had awakened, his chakra had increased more than a hundredfold; they weren't on the same level at all.
Itachi's current chakra amount should be less than Sasuke's after he activated his Eternal Mangekyō, but the difference wouldn't be more than three times.
Yami's current chakra level should be similar to Madara's before his death, but in terms of actual combat experience, he couldn't compare to Madara.
‘It seems to be due to Indra's chakra. Ordinary Uchiha will also be limited by chakra when opening the Eternal Mangekyō.’
‘Five minutes of perfect [Susanoo] is better than nothing. At least while I'm away, unless a Yonko or Admiral comes knocking, Itachi should be able to handle everyone else.’
Yami found the reason.
Both Sasuke and Madara were reincarnations of Indra, and he had directly reached the level of Indra's bloodline.
Itachi was probably the only one who could activate the Eternal Mangekyō simply by changing his eyes.
But this power would be of tremendous help now.
