"Orochimaru..."
Madara had indeed heard of a ninja like Orochimaru. Madara died quite late, and by the time he did, the Three Ninja had been famous for a long time.
Madara hadn't noticed anything unusual, but there was someone who knew the inside story, and that person was Dou, who had performed the Reanimation on Madara.
But even if Dou found something amiss, what could he do? He wasn't Orochimaru himself, and would he really fall out with Su Xiao for the sake of Reanimated Uchiha Madara?
Moreover, Su Xiao knew something else—someone would soon help him silence Dou. Sasuke had transplanted Itachi's Sharingan a few days ago. This was something Obito had done on purpose, to make Sasuke a major asset in this war.
What Obito didn't know was that he had indeed succeeded, but he had actually increased the enemy's combat effectiveness.
