Tsunade nodded calmly and explained.
"That's right. Isshiki is dead."
"And we weren't the ones who killed him. Another Otsutsuki who had kept their identity deeply concealed ambushed and killed him."
At this point, Tsunade paused briefly, looked at Sasuke, and dropped the most mind-bending revelation of all.
"You know this person."
Sasuke froze and blurted out, "I do? Who?"
"You're quite familiar with Black Zetsu, aren't you?" Tsunade asked.
Sasuke nodded instinctively, confusion filling his mind.
Of course he knew Black Zetsu!
The mastermind behind the Fourth Shinobi World War, who had lurked for a thousand years, plotted everything, and manipulated both Madara and the war itself.
In the end, he and Naruto had joined forces to seal Black Zetsu away for good, cutting off Kaguya's path to resurrection.
In his eyes, Black Zetsu was merely a fragment of Kaguya's will, a little creature with hardly any fighting ability who could only scheme from the shadows.
Utterly bewildered, Sasuke said gravely:
"I know Black Zetsu."
"At the end of the Fourth Shinobi World War, Naruto and I joined forces to seal him away for good, making sure he could never threaten us again."
Tsunade drew a deep breath. Looking at the baffled Sasuke, she slowly revealed the secrets exposed by the Sky Screen.
"That was how things ended in your timeline."
"But in our timeline, rewritten by the Sky Screen, everything is different."
"All of you were wrong about Black Zetsu."
"He wasn't a manifestation of Kaguya's will at all, nor some obsession born out of nothing."
"Black Zetsu's true identity is a full-fledged member of the Otsutsuki clan-Otsutsuki Hara!"
Sasuke's entire body jolted at those words!
An Otsutsuki?!
Black Zetsu was actually an Otsutsuki?!
Before he could recover, Tsunade continued, laying bare every hidden detail.
"Hara is Kaguya's