Board Thread:Theories and Speculation/@comment-25571342-20150809141259/@comment-24165784-20150810030443

Ajr1218 wrote: Kurama is a chakra being, hence it's not really surprising he'd go out of tailed beast mode and change into his physical form. Besides, TBM puts out a lot of chakra; it'd be a waste to keep it activated when not in battle.

As for the ability to summon Kurama outside his body, I think that Naruto is fine as long as there is a bond between him and Kurama. If that bond is severed for whatever reason (Kurama gets sealed or something), Naruto's screwed. Its Probably Similar To What Naruto Did In Road To Ninja (Even Tho That Was Completely Non-Canon) He Made A Temporary Truce And Allowed Kurama To Come Out Of His Body