As the most deeply hidden partner, Black Zetsu's version of the story was already very close to the truth.
He had watched Director Yamada methodically maneuver his competitors into the abyss...
Watched a plan that Konoha could never have accepted gradually become reality...
He had even watched someone maintain the image of a Konoha hero until the very last moment, making the major ninja clans whose foundations he had nearly dug out willingly stand at his side!
It inevitably reminded the dutiful son of all the idiotic moves Uchiha Madara had made while fighting the Senju brothers for power in his early years.
And he could not help sighing inwardly...
—Why was it Uchiha Madara, rather than that young man in the wheelchair, who had inherited Indra's chakra?
If even one of the dozen or so reincarnations of Hagoromo's eldest son had been at that level, perhaps he would have long since achieved his ultimate dream of splitting the moon to save his mother!
Ultimately, it was because Black Zetsu had no way to control where Indra's chakra would go after each reincarnation...
Otherwise, with the dutiful son's specialized skill of backstabbing maxed out, he would probably already be considering how to decisively switch sides, kill his old boss while he was at it, and pledge himself to a new one.
Of course... fantasies were fantasies. In the end, the aloe man's thoughts had no choice but to return to reality.
According to the original plans of Madara and himself, Yamada Soji was merely a tool to help them gather the tailed beasts and bring about the Eye of the Moon Plan. His importance had not ranked particularly high.
It was only after the Spirit Body Transfer Technique achieved phased results, when the aged Madara began thinking of leaving contingencies