Sasuke is the youngest son of Mikoto and Fugaku Uchiha, both jonin of Konohagakure. He has a brother named Itachi.
Sasuke is recognized as a genius of the Uchiha. Despite that, he wasn't recognized by his father, but he strives hard.
When he was eight years old, the entire clan was massacre by his brother, leaving him emotionally scarred.
Despite me once a Sasuke hater, since his character is comparable to my novels' main character, I'm starting to dig up Sasuke's identity.
Okay, so let's get started. We are all aware that Sasuke is just seeking his vengeance because of Tobi's manipulation.
I think Sasuke Uchiha is suffering from a ''posttraumatic stress disorder'' which people thinks they are emotionless. Sasuke is suffering from a dilemma and a certain mental illness besides PTSD. Okay, here's number one proof: [http://www.mangareader.net/93-403-8/naruto/chapter-398.html he can't breath normally when Sasuke reminisces his times with Itachi], a symptom of PTSD. Also, his personality; each of them is a symptom of PTSD. So I think it is. Also, he stayed away with Naruto, another symptom.
As for his revenge, unfortunately was f- corrupted by Tobi. He stated he only lives to be an avenger; to kill Itachi, and now everything is done. He's targeting Naruto, and I think it's fine, but he should talk to Itachi first right?
I am thinking of the worst possiblities, that when Itachi released the Edo Tensei, he would be released, as well and say the last words "Yuruse Sasuke", which I hope for the least won't happen. For the better possibilities, I think after their talk, Itachi'll be released. However, Sasuke would still want to kill Naruto to prove who's stronger, go back to Konoha and would kill Tobi as vengeance. I forgot what's the point and how. I have understood Sasuke why he wants his revenge. Sasuke is a kind person. He is very smart.
People were weak when it comes to emotions. It made intelligent people weak.
So read here for more Sasuke Uchiha Theory!