Two Methods of Synthesizing the Rinnegan

"This is too strange!"

Staring at the Eternal Mangekyō Sharingan in Karin's eye sockets, Hyuga Kagami gradually furrowed his brow and muttered under his breath.

Karin asked nervously, "My lord, what is it? Is there something wrong with my eyes?"

Hyuga Kagami did not explain. He remained lost in thought.

During the battle in which Danzo had been slain, the pair of Eternal Mangekyō Sharingan in Karin's eye sockets had been only one final step away from evolving into Rinnegan.

At the time, if Hyuga Kagami had acted one or two breaths later, the ninja world might have gained another pair of Rinnegan. Thus, being forcibly interrupted at the crucial moment of evolution had undoubtedly dealt the heaviest blow to these Eternal Mangekyō Sharingan.

Fortunately, these were Eternal Mangekyō Sharingan capable of restoring their own ocular power. Had they been an ordinary pair of Mangekyō Sharingan, they would most likely have been completely ruined after such an ordeal.

Even so, Hyuga Kagami estimated that these Eternal Mangekyō Sharingan would need at least three months of nurturing before they could gradually recover the enormous amount of ocular power expended during evolution. That was already a very optimistic estimate on his part. Before the transplant, he had even prepared himself for six months—or longer—of nurturing.

Yet, to his surprise, less than a month had passed before these Eternal Mangekyō Sharingan began showing signs of recovery. Moreover, they had started restlessly influencing their host, Karin.

"It seems Karin's constitution is even stronger than I expected!"

After ruling out every other possibility, Hyuga Kagami could only attribute this result to Karin's special Uzumaki Clan constitution.

At that moment, he vaguely understood why Uchiha Madara had chosen Nagato, an Uzumaki Clan member, as the vessel for his Rinnegan instead of a more renowned Senju Clan