The Uchiha Patriarch wants to transform the ninja world

He traveled to the world of Naruto from behind-the-scenes flow and the reformed ninja world , but the time was a bit wrong, and he traveled to a time that was more than 600 years before the beginning of the story.
Because he was a member of the Uchiha clan who was born evil, and his eye technique was too evil, and he might even be the reincarnation of Indra’s chakra, he was beaten up by the entire ninja world, and even sealed in a mask by the Uzumaki clan.
When he opened his eyes again, he was awakened by Uchiha Shisui in a mask.
Very good, since that biased old man of the Six Paths doesn’t want him to collect all the chakra and live forever, then…
starting from this era, change the order of the ninja world little by little…
start with creating the Black Shadow Corps.