[PS: The earlier plot about sealing Sakura's memories has been removed and replaced with genjutsu.]
In Akatsuki's underground hideout, before the Demonic Statue of the Outer Path, Obito flexed his newly attached right arm and turned around. White ribbon now covered his left eye.
He reached for the Orange Mask on the stone platform beside him.
White Zetsu said, "You've finally transplanted both eyes. Shouldn't you get a new mask?"
Obito picked up the mask and put it on before answering White Zetsu's question. "Hashirama cells can't cancel out the blindness caused by using the Mangekyo in both eyes. I intend to uncover my left eye only in special circumstances."
White Zetsu asked, "What special circumstances?"
Obito said, "When Sasuke Uchiha appears before me again, for instance!"
White Zetsu said, "Fair enough. That guy keeps ruining our plans, and he's strong enough to defeat even Nagato. We really do have to guard against him!"
Obito offered no opinion on whether Sasuke had truly surpassed Nagato now. His right eye glanced toward White Zetsu. "Black Zetsu hasn't been with you lately?"
White Zetsu spread his hands. "Ever since we sealed the Seven-Tails, he sneaked off again. He said to notify him once you've caught the Eight-Tails and are ready to seal him, and he'll be there."
Obito withdrew his gaze, his thoughts turning. Black Zetsu, the embodiment of the will Madara left behind through Yin-Yang Release all those years ago, is also his means of watching me. He may not be particularly powerful in combat, but keeping him around is trouble all the same. Once all the tailed beasts are sealed, I'll dispose of him and eliminate any future threat!
Of course, he did not voice those thoughts in front of White Zetsu.
He sat down in the Stone Chair. "Any