Back then, even the Demonic Statue of the Outer Path had been sealed on the moon, watched over by the descendants of Otsutsuki Hamura's lineage.
But after Madara Uchiha awakened the Rinnegan, he used the Summoning Jutsu to summon the Demonic Statue of the Outer Path down from the moon.
To be honest, Black Zetsu had initially worried that Otsutsuki Hamura's lineage on the moon would interfere in the affairs of the Ninja World.
But as time passed, there had been no movement from the moon, causing Black Zetsu to subconsciously overlook Otsutsuki Hamura's lineage there.
Of course, it was not that Otsutsuki Hamura's lineage on the moon did not want to take back the Demonic Statue of the Outer Path. They simply lacked the ability to do so!
When Madara Uchiha summoned down the Demonic Statue of the Outer Path, only members of the Branch House remained in Otsutsuki Hamura's lineage on the moon.
Even the Branch House members were few in number.
With only a handful of stragglers, how could they possibly bring the Demonic Statue of the Outer Path back from the Ninja World?
So, Otsutsuki Hamura's lineage on the moon had the intention but lacked the strength!
However, Black Zetsu knew nothing about Otsutsuki Hamura's lineage on the moon.
He could infiltrate anywhere in the Ninja World, but the moon was the one place he truly could not reach!
Therefore, after so many years, when the moon underwent a strange change, Black Zetsu naturally thought first of Otsutsuki Hamura's descendants.
And naturally, Black Zetsu's guess was not wrong.
The sight of the sun and moon shining together had indeed been caused by Toneri.
However, this phenomenon had appeared purely because Toneri was borrowing the Giant Tenseigan's power to fight.
As for Toneri interfering in the Ninja