hey guys, want to ask something with u. we have already seen naruto becoming a sage by perfecting the sage mode but there's a question which is bugging me since that episode where we saw sage mode training. its concerned with nature energy. That elder frog(what's his name,forgot!!) gave a detail explanation about nature energy telling its external energy which comes from surroundings,terrains etc. Is kyubi's chakra also nature energy? if naruto masters it, will he be able to maintain sagemode forever?! if this thread has already been made, then i am sorry for that, just wanna know because of my curiousity plus i am bored to search that thread.