It appears that Yamato is the ANBU guy from 285-- Is he Sai's sempai? What could this possibly mean? Are Sai and Yamato working for Akatsuki? Is Yamato working undercover for Tsunade against root? Is the mask Sai's?! Is Yamato really the white cat ANBU and the mask belongs to someone besides him or Sai? What impact does this new development make? Discuss.