In Uchiha, is It Really Difficult to Open the Reincarnation Eye?

Come to Naruto World and become the second son of Uchiha Fuyake.
Uchiha Itama, who thought he was powerless to change Uchiha's fate, unexpectedly discovered that he was a genius after learning from ninjas.
More genius than all Uchihas.
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Muji uses any ninjutsu.
Open your eyes for a second.
One year kaleidoscope.
Three years of reincarnation.
But more special is the ability of the two eyes between Uchiha's board.
The left eye absorbs the darkness in the opponent's heart.
Right eye, the power of blackening.
PS: This book takes the road of blackening the body, behind the scenes.