Board Thread:Theories and Speculation/@comment-45444155-20200728155230/@comment-3523655-20200801183251

ReweR 1331 wrote: Seelentau says that Kabuto studied Sage Transformation in a cave... who's right? Both. He studied Sage Mode in a cave, then got Jugo's cells to get Sage Transformation, which allows him to keep using Sage Mode continuously. Naruto, for example, needs to stay still to get it. Because Kabuto has Jugo's cells, he doesn't need to.

ReweR 1331 wrote: What is this opinion based on? He was inside the snake when he entered Sage Mode. So that's where it could be fixed to absorb natural energy...

Yes he was inside the snake, but the snake was moving, first of all, and without Sage Transformation, he'd have lost Sage Mode after a while. Instead, he remained in Sage Mode, an ability which he can only do because he has Jugo's cells.