NirvanaAtLast
Member
Ok, so one thing I've noticed is that Kishi seems to hint at other Sage modes possibly existing. We already know of an as yet unrevealed Sage mode regarding a "Humid Bone Forest" (which is likely Slug Sage Mode), and we also learned that the 4-tails was called "King of the Monkey Sages" & said he ruled a place called Suiren Caves. Now I believe that isn't just a moniker or nick-name. I think there are lots of "Sage" animals in the Naruto universe that if trained under could provide you with a corresponding Sage Mode. I mean there's toads, Snake/Dragon, Slug, Monkey, & who knows what else. There seems to be an abundance of these Sage animals. Also it wasn't clearly explained what the source of Hashirama's Sage Mode was so there's another mystery. I think Hiruzen may also be a "Monkey Sage" and just hasn't shown it yet much like no one knew Hashirama had a secret Sage Mode. I bet Tsunade also at least knows of the Slug Sage Mode or probably has it. Just a thought. =D