"Her death was a conspiracy, part of a plan targeting the Uchiha, but we didn't know what Black Zetsu wanted back then. All we knew was that he seemed to need my power, so..."
He raised his head, the red Mangekyo appearing in his eyes once more. Hiruzen Sarutobi recognized the pattern in his pupils. "I had Yilong cast a Mangekyo-level genjutsu on me and went undercover at Black Zetsu's side."
Hiruzen Sarutobi frowned and couldn't help interrupting. "But don't you have the Mangekyo too? The Uchiha Clan's resistance to genjutsu..."
"Uh... I was dying at the time. That bastard really was beating me to death. Otherwise, we wouldn't have been able to have a civil conversation... so his genjutsu worked pretty well..."
A hint of sheepishness crept into Uchiha Kagami's voice as he changed the subject. "Those are all unimportant details. You just need to know that, from that day onward, there was an Uchiha who had defected to Black Zetsu."
"Then, over these years undercover, I gathered some intelligence on [Black Zetsu]."
Hiruzen Sarutobi's gaze grew grave. He slowed his breathing and listened closely.
Uchiha Kagami sorted through the logic in his mind, gathered his words, and cleared his throat before speaking.
"There are two Black Zetsus. One is powerful and likes fighting, but usually sleeps underground. The other is weaker, but likes scheming against people. From what I've observed, there seems to be some friction between them. They don't get along."
"The Black Zetsu I've had more contact with is the scheming one. Based on my observations over the years, he seems to have two objectives: the Rinnegan and the tailed beasts. He likes using the Infinite Tsukuyomi plan to trick people into collecting those things for them, but I don't know his ultimate goal."
"Black Zetsu