Being the second son of Konoha Military Police captain and Uchiha clan head Fugaku Uchiha, Sasuke grew up in the shadow of his older brother, Itachi. Itachi was an acknowledged prodigy who was viewed by the Uchiha clan as a genius, whose work would further strengthen the bonds between the village and the clan. In particular, Sasuke's father took an active interest in Itachi. Itachi, on the other hand, was rather ambivalent and full of oddly conflicting undercurrents, acknowledging Sasuke by taking interest in his progress as a ninja when even their father did not, but spending little quality time with Sasuke. Even after Sasuke enrolled in the Ninja Academy, he still was unable to escape Itachi's shadow. Despite consistently scoring at the top of every class, Sasuke failed to receive any recognition from his father, who defined Sasuke's success only in terms of his older brother. Itachi acknowledged the rivalry Sasuke felt, telling him, "We are brothers. I am the wall you must climb over, so you and I will continue to exist together."
Itachi's relationship with his father deteriorated further when Itachi was questioned by other members of the Uchiha clan regarding the death and suicide of his best friend, Shisui. As Itachi's behavior became increasingly bizarre and weird, Sasuke's father decided to spend time with Sasuke. He taught him the Great Fireball Technique, a common family jutsu. Sasuke (age 7 at the time) proved himself to be a genius in his own right by performing the jutsu in front of his father after only one week of training. At that moment, Sasuke finally received his father's recognition; the Uchiha clan considered the ability to perform fire jutsu as proof that one had become an adult. Sasuke's father told him that he could now proudly wear the clan's emblem on his back. More forebodingly, Sasuke also received a stern warning not to follow in Itachi's footsteps.
Shortly thereafter, Itachi massacred every member of the Uchiha clan, sparing only Sasuke. Itachi said that Sasuke was not even worth killing. In addition, Itachi told him, "You've always wanted to surpass me. That's why I'm going to let you live ... If you wish to kill me, then hate me, despise me ... and by all means flee, cling to your wretched life." Itachi also revealed to Sasuke where the secret meeting place of the Uchiha was hidden and suggested that Sasuke go there to learn what the true history and purpose of the Sharingan is. Sasuke thought he had fainted after this, but he later remembered that he managed to stand back up, awaken his Sharingan and chase after Itachi. Sasuke managed to knock off Itachi's forehead protector, and Itachi was seen shedding a tear after picking up the forehead protector and proceeding to incapacitate Sasuke, who awoke in the hospital not remembering anything but what Itachi showed
Jutsu
* Amaterasu
* Chidori
* Chidori Current
* Chidori Senbon
* Chidori Sharp Spear
* Cursed Seal of Heaven (Removed)
* Demonic Illusion: Shackling Stakes
* Fire Release: Dragon Fire Technique
* Fire Release: Great Dragon Fire Technique
* Fire Release: Great Fireball Technique
* Fire Release: Phoenix Immortal Fire Technique
* Flapping Chidori (Unusable)
* Kirin
* Kusanagi Sword: Chidori Katana
* Lion Combo
* Manipulated Shuriken Technique
* Manipulating Windmill Triple Blades
* Orochimaru's Oral Rebirth Technique (Unusable)
* Peregrine Falcon Drop (Anime only)
* Shadow of the Dancing Leaf
* Shadow Shuriken Technique
* Snake Authority Spell
* Summoning Technique (Snakes)
* Summoning: Lightning Blade Creation
