They stayed in the Alternate Space for several more days. Sometimes Black Zetsu would poke his head out to look around. Once he finally confirmed that no one was there, they returned to the real world.
Actually, Kamui could move directly from one location to another.
But that required a complete pair of Kamui Mangekyō Sharingan.
Clearly, with no eyes at all right now, being able to disappear and reappear in the same place was already quite good for Kamui. They could hardly ask for more.
At White Zetsu's insistence, Black Zetsu went into the river and thoroughly scrubbed his body, finally emerging after soaking for three or four hours.
Then he took out the three-tomoe eyes from before and put them in. The Mangekyō's ocular power finally had somewhere to reside, and the black patterns in both eyes turned into overlapping pinwheels, radiating formidable power.
"This kid's Mangekyō ocular power has begun slowly awakening after years of exposure."
Aside from the Hashirama cells in White Zetsu's body, there was also the resonance between Uchiha Fugaku's Mangekyō Sharingan and the Kamui Sharingan.
The resonance between the two pairs of Sharingan naturally accelerated the awakening of the Kamui Sharingan.
The facts proved that Mangekyō ocular power did not necessarily need its original eyes to house it.
In the original story's finale, Obito's soul had been able to grant Kakashi a complete pair of Kamui Sharingan.
And after Impure World Reincarnation, some ocular power accompanied the soul into the World of the Living, as Nagato and Uchiha Itachi demonstrated.
The eyes were the primary vessels for ocular power, but it was also connected to the soul. The soul could serve as a partial vessel as well.
Sitting by the river, White Zetsu and Black Zetsu stared blankly at the rushing water.
"So