"No need!"
Feng Yao shook his head.
Orochimaru did not know that Feng Yao also knew the Impure World Reincarnation Jutsu, and a system-improved version at that.
Speaking of which, Feng Yao had never used the perfect version of Impure World Reincarnation the system had rewarded him with since obtaining it.
"Oh, it seems you already have a countermeasure, Feng Yao..."
Orochimaru was not surprised.
"Not exactly, but there's something you might not know. Impure World Reincarnation actually has a loophole..."
The look Feng Yao gave Orochimaru was somewhat meaningful.
"What loophole?"
"If the reincarnated person knows the hand seals for Impure World Reincarnation, they can reverse the technique and free themselves from the caster's control..."
Orochimaru frowned at those words, inwardly shaken.
But Orochimaru being Orochimaru, it instantly occurred to him that the Second Hokage might very well have left it there deliberately.
"The Second Hokage was that meticulous!" Orochimaru's voice held both admiration and wariness.
In the original story, Orochimaru had researched Impure World Reincarnation for years without learning of this loophole.
It was not until the Fourth Shinobi World War that Orochimaru learned of this loophole through the memories of the cells he had left in Kabuto's body.
That just showed how devious the Second Hokage was... no, how talented!
As for how Madara knew...
Who knew!
It was entirely possible that Tobirama had told Hashirama, who had then turned around and told Madara...
"Could the First Hokage and Madara have already broken free of the Third Hokage's control?" Orochimaru asked, though his tone was utterly certain.
"That's right. All three of them were brought back through Impure World Reincarnation, and all of them broke free of its control. Now, apart from lacking flesh-and-blood bodies, they're basically no different from being alive..."
Feng Yao shrugged.
Orochimaru's eyes