Saikai (E51)

Team Kakashi are stunned to learn that Sai's true mission is to kill Sasuke. Naruto wants to believe that the smile Sai showed them was real, but there is a possibility that it was all an act. Meanwhile, Sai has reached Sasuke. Kill him, or save him... Which ending does Sai, a Foundation operative, choose? Sai and Sasuke battle it out, demolishing a part of the hideout. Naruto and the others follows the signs of chakra, and they are finally reunited with Sasuke. (iTunes)