Board Thread:Episode Discussions/@comment-25319479-20171206103000/@comment-35622277-20171206180440

Pretty sure he was trying to enter Sage Mode, as that chakra cloak only appears on him when he's gathering nature energy...

We'll probably find out from a flashback or some dialogue from either Shino or Mitsuki.

"Yo Naruto, Orochimaru's son has Sage Mode"