After hearing Clan Elder Chizuru's explanation, Akaseki understood why Clan Leader Jiancheng and Clan Elder Lanyu had reacted that way when they first examined the nature of his Sharingan.
One ninjutsu eye and one genjutsu eye meant—
"Two more spiritual weapons than other Susanoo—but poorer coordination between the exclusive Mangekyo Sharingan eye techniques?" Akaseki muttered. There were gains and losses, he supposed.
"Yes. Generally, before Susanoo reaches its second stage, a mixed pair of Mangekyō Sharingan is less powerful in combat than a pure ninjutsu or pure genjutsu pair.
"And even after it reaches the second stage, Susanoo is still one of the most costly Mangekyo Sharingan eye techniques.
"By comparison, exclusive Mangekyo Sharingan eye techniques vary from person to person. Some clan members' exclusive techniques consume very little power. Those techniques are best suited to making full use of the Mangekyo Sharingan. After all, every bit of mangekyo dojutsu power you spend is gone for good."
Clan Elder Chizuru explained.
As for the "eternal Mangekyo Sharingan," Chizuru simply treated it as nonexistent.
For one thing, Akaseki had no biological siblings or other close relatives. For another, if he were the sort of person who could kill a close relative to steal their Sharingan, Chizuru would never have bothered with him.
Chizuru's opinion of Akaseki had steadily improved, largely because she had learned about Setsuna entrusting his Sharingan to him.
Although Setsuna had offered willingly and of his own accord, if Akaseki had actually taken his remaining usable eye, Chizuru would not have treated him as she did now—
But Akaseki had only taken a useless one!
After learning this, Chizuru had not really believed Akaseki had a way to heal it. She had assumed little Akaseki had done it deliberately to encourage Setsuna to keep living.
It only made