Welcome, This Is A Sai Fan Page. They're ot many sites on Sai so, i thought I'd make one. I'm only 18 so you can tell why this is rubbish.
When Naruto met Sai he was a jerk, but it was funny watching them fight over what he said, after meeting Naruto, he was reminded of his brother and leared how to feel emotions agian, but it led to more problems, mostly when he was thinking up nicknames or trying to be nice to Naruto.
Sai was first a spy, Naruto and the others thought he was working for Orochimaru, but then found out he was there to kill Saskue, he didn't because he knew what Naruto thought of Saskue.
Sai's Justu Is like painting wild beasts, birds, snakes , rats (ect). Then making them come to life helpful for everything to fighting to looking for something.
The words that activate this Justu are "Ninpou, Choujuu Giga" (Ninja Art Wild Beast Painting)