Sai



Sai (サイ, Sai) is one of the main supporting characters of the series. He is a young ninja from Root who specializes in techniques that use ink. He replaces Sasuke Uchiha in Team Kakashi.

Background
Sai as a child.Sai was orphaned as a child and recruited into Root, a secret branch of the ANBU. There he was raised and conditioned to have no personality, personal connections, or a name, "Sai" being given to him for the purposes of joining Team Kakashi. Though largely successful in this regard, Sai retained an interest in art. When Shin, an older Root member, discovered Sai's drawing ability, he encouraged Sai's talent and they became very close.

Over time, Sai came to think of Shin as an older brother and looked up to him. Eventually, his "brother" died of an unnamed illness, and Sai's Root training suppressed most of the memories he had of his brother. Before Shin's death, Sai was making a picture book that would depict all the opponents that they faced and illustrate the feelings that they shared for each other. Sai's and Shin's portraits are located at opposite ends of the book, and in the center pages would be a picture of both him and his brother holding hands. He had forgotten that this was his intention, but after bonding with Naruto Uzumaki he remembers and is able to complete the book, causing Sai to give the first genuine display of emotion in a long time: a smile.

Appearance
Sai has short ink-black hair, and extremely pale skin. He usually is seen carrying a small backpack with his brush, scrolls, and ninja ink. He wears a black midriff shirt similar to Fū and his partner, Torune most likely showing his allegiance to Root. He also carries a tantō on his back, wears a short black shirt, with short and long sleeves, that reveals his midriff. He had Danzō's curse mark on the back of his tongue until Danzō's death, which caused it to disappear.