

Before that happened, however, Shin died of an unnamed illness and Sai's Root training suppressed most of the memories he had of him. Unfortunately, the final step in Root training called for the two to fight to the death to eradicate all remaining emotions. Over time, Sai came to think of Shin as an older brother and looked up to him. When Shin, an older Root member, discovered Sai's drawing ability, he encouraged Sai's talent and they became very close. Though largely successful in this regard, Sai retained an interest in art. 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.

Sai was orphaned as a child and recruited into Root, a secret branch of the Anbu under the leadership of Danzō Shimura. 8.1.3 Naruto Shippūden the Movie: The Lost Tower.8.1.2 Naruto Shippūden the Movie: The Will of Fire.8.1.1 Naruto Shippūden the Movie: Bonds.7.3 Naruto Shinden: Parent and Child Day.6.5 Konoha Hiden: The Perfect Day for a Wedding.

