Tale of Itachi Uchiha

Itachi Uchiha is one of the antagonists and anti-villain in Naruto series. During the era of First Hokage Hashirama Senju and co-founder Madara Uchiha a dispute was broken between Hashirama and Madara. Thus, Hashirama becoming the First Hokage. However, Madara was suspected danger to Konoha in future and then Danzo one of the heads of Anbu gives order to Itachi to destroy the whole Uchiha Clan and does the same thing as ordered by Danzo but spares the life of his one and only brother Sasuke Uchiha.

Itachi in Akatsuki

Itachi Uchiha as a child. He was an extraordinary shinobi who doesn't need any tricks to make himself strong. Indeed Itachi didn't have any teacher. His father Fugaku Uchiha guided him as a child and highly admired by his father and the whole Police Force. One fine night when Itachi was at his training he used deadly traps to let him attack and dodges all of the Kunai with his sharingan. From that moment Orochimaru envies the power of sharingan and decides to make Itachi as his new host.

 

Itachi and his younger brother Sasuke

Itachi used to have affectionate friend named Shisui Uchiha. Danzo steals Shesui's right eye and then Shisui gives his other left eye to Itachi and dies. That is how Itachi becomes more strong awakening Mangekyou sharingan. After devastating the whole clan. He sacrifices his village and decides to join Akatsuki acting as villain. Side by side ensuring Sasuke's security.
Before leaving Itachi shows an illusion to Sasuke with his genjutsu. Sasuke started to hate Itachi eventually grows hatred to him. Nevertheless, it was all pre-plan of Itachi to make Sasuke strong. Sasuke goes to Itachi to avenge him and both of them fights in the end, Itachi sacrificing his own life and his special eye for his brother.

 

Itachi in Anbu

Before Itachi's death, Orochimaru tries to steal his eye being an ally in Akatsuki but Orochimaru was tortured awfully with Itachi's Mangekyou sharingan. Nontheless, later Kabuto Yakushi reanimates Itachi for his own benefits but most surprisingly Itachi doesn't let him control him. In fact Itachi is the hero of Konohagakure without the notice of anyone. Even superior to Hokage if we deeply give a proper thought. As Itachi uses his Izanami another power of Mankekyou sharingan ultimately stopping the Reanimation Jutsu of Kabuto Yakushi.

Reanimated Itachi Uchiha Using Izanami 

Therefore Itachi is the secret hero of hidden leaf village protecting the all nations from the perilous Reanimation Jutsu which was actually founded by the Second Hokage Tobirama Senju and completed by Orochimaru and then later fully mastered by Kabuto Yakushi after the death of Orochimaru.