ok lets dive in my theory:
here is an indication of sage mode: http://www.narutobase.net/manga/Naruto/418/5
(notice how fukasaku points out the eyes!?)
Kurama has those "sagehood" markings and gathers nature energy like Naruto, look here at kurama: http://www.narutobase.net/manga/Naruto/611/7
look here at Naruto: http://www.narutobase.net/manga/Naruto/418/2
my gues is that Kurama learned the secrets of Nature energy in two possible ways:
1. was taught or knowledge was given to him by SO6P himself
or
2. learned it while Naruto was learning it.
either way Kurama has been in sage mode for a long time! his eyes shows sage mode, plus he can recover chakra and can give it to anyone.
another clue is that he even told naruto that if Naruto uses sage-mode to measure the tentails's power he would measure that it cant be measured!
how would he know that? unless he can feel it himself in sage-mode!
I say Kurama is the strongest of all he tail beast due to being able to use sage-mode.
my theory:
Kurama sage mode + Naruto sage mode= SO6P status=rinnegan.
It's how Kurama is linked to the sharingan, its why Madara wants to have Kurama under his control.
what do u guys think? No hater comments!!!!!!!!!!!!!!!!!!







































m ..... lol i never knew that tailed beasts can use and master jutsu. kurama told naruto about the nature of the juubi's chakra because of his knowledge of the juubi (he was a part of it) and i guess since kurama was a part of the juubi who is made of nature chakra or to be more precise, nature is made out of it then kurama can regain his chakra from nature, but i wouldn't call that sage mode. kurama's ability to gain chakra from nature is what he has in common with sage mode thats all.