" Kaguya Ōtsutsuki's third son?!"
Tianyi's voice was as calm as still water, yet it struck Uchiha Madara like a thunderclap exploding beside his ear.
Madara's pupils abruptly contracted, and a flicker of doubt crossed his Rinnegan, their radiance dimmed by the sealing formulas suppressing them.
He raised his head and fixed his gaze on Tianyi's face, as though searching for some flaw in it, but all he saw was calm certainty.
Tianyi looked down at the man who had once stood at the pinnacle of the Ninja World and spoke at an unhurried pace:
"The Ōtsutsuki Clan came from beyond this world. They crossed the stars to reach the Ninja World with only one purpose: to plant the God Tree, harvest its Chakra Fruit, then take the fruit and leave for the next world.
A thousand years ago, Kaguya Ōtsutsuki came to the Ninja World under orders and planted the God Tree.
But just as the fruit was about to ripen, Kaguya abandoned her mission. Instead of handing the fruit over to her clan, she devoured it herself and gained power that surpassed everything else."
Tianyi paused briefly, his gaze sweeping over the Ten-Tails' body as it slowly cooled in the distance.
"After swallowing the Chakra Fruit, Kaguya merged with the God Tree and became the first progenitor of chakra on this planet.
Later, she gave birth to two sons. The elder was Hagoromo Ōtsutsuki, whom later generations called the Sage of Six Paths.
The younger was Hamura Ōtsutsuki, the ancestor of the branch of Ōtsutsuki descendants on the moon."
Madara's lips moved slightly, but no sound came out.
"And Black Zetsu-" Tianyi's gaze fell on a patch of ground in the distance where something was silently writhing.
"He was the third son Kaguya created from her own will