Traveling through Uchiha, there is no system, no Golden Finger, and no Sharingan. He is about to face the Nine-Tails Rebellion and the terrible night of genocide. He can only wait for death.
I originally wanted to persuade my sister to live in seclusion together after the Kyuubi Rebellion, but my sister was killed during the mission and lost her eyes.
Uchiha's eyes were a curse, and feeling the pain, Uchiha Akatsuki directly turned on the kaleidoscope.
The gluttonous left eye can devour and fuse blood inheritance boundaries, and the copying right eye can temporarily copy the target's abilities, including the kaleidoscope ability.
He has the capital for revenge, but he knows that revenge alone will not help. He knows that this world has the eye of reincarnation and that it can resurrect the dead.
He chose to go into the darkness, seize Kakashi's Sharingan, borrow Obito's identity to stir up trouble in the ninja world, and rely on his own ability to open a true infinite Tsukuyomi, so that there would be no more wars and conspiracies in the ninja world.