Within the Land of Grass, near Kannabi Bridge, inside a secret underground cavern.
This had once been where Madara Uchiha lay low. Here, he, Black Zetsu, and White Zetsu had plotted for the Ninja World and sketched out a blueprint for the future. Now, only an empty cavern remained, along with a figure lying on the ground, twisting and writhing as though enduring immense pain.
Half of Obito Uchiha's body was now a ghastly white. Though his arm and thigh had regrown, they remained twisted from the burns, and that half of his body continued to writhe unnaturally.
After Black Zetsu had brought Obito Uchiha out, he immediately came to this stronghold near Kannabi Bridge for treatment. This was the closest place to Konoha, and it had also been specially prepared by Madara Uchiha in the past, so its security was at least assured.
As for the treatment, it was simple for Black Zetsu: he merely had White Zetsu possess Obito and let him slowly fuse with the power inside White Zetsu's body.
"Man, this is so boring, Obito. Your injuries have been around for so long. How come you still haven't recovered? They feel even worse than what Minato Namikaze did to you last time."
In the deathly silent cavern, a voice rang out—complaining, yet oddly cheerful.
A white head with a swirling face suddenly emerged from the white half of Obito's body. It was a horrifying sight that would have scared an ordinary person out of their wits, but Obito Uchiha had long since grown used to it.
He merely remained silent and ignored him.
"Oh, come on, Obito. Why are you so quiet? Talk to me. This is way too boring."
"Come to think of it, I'm possessing you right now, so why can't I feel the