Ok kabuto reveals that karin is an uzumaki and that red hair is the "trademark" of the uzumaki....so i was thinking what does this mean for sasori,gaara,sasori's father...and for choza akimichi etc...is masashi telling us that the rest are uzumaki too?...well that could be true but anyways it really doesnt matter...then we see that kabuto is a dragon and not just a dragon a "sage" dragon....he trained under the white snake sage and now he is a "sage" dragon...and he dodges sasuke's Susano'o arrow attack...and sasuke is shocked to see that well surprised and goes like "My arrow......He dodged it?!....well this can mean something here...since we all knw that sasuke is very much obsessed with obtaining more power...it could be possible that after he defeats kabuto and has his talk with itachi he might go crazy over obtaining more power and absorb kabuto's powers somehow...in order to become a sage....Well that could mean that naruto and sasuke could be on equal levels again...since naruto used his sage mode to defeat naguto,a rinnegan user...he is strong on top of that he has nine tails mode now...that gives him super speed and immense power...so it could possible that the writer is giving sasuke a sage mode of his own to fight against naruto's and his ems to fight of with naruto's kyuubi mode...that gives both equal chances against each other.....! And now another thing that Kabuto mentioned was Shikkotsurin a place as special as Myoubokuzan where naruto learnt his sage mode and Ryuchidou where kabuto learnt his...so basically it was jiraiya who passed it on to naruto and orochimaru was sasuke's mentor for a while even though he wanted to use his as a vessel...wait he wanted to use him as a vessel kabuto says that orochimaru was looking for the right body which could perfectly master the white snake mode...meaning there could be a possibility that sasuke can master it....anyways coming back to Shikkotsurin now it could be a possibility that this place is the slug area....well what im trying to say is its likely! that tsunade has a sage mode too and this is where she learnt it...meaning all three legendary sannin have or had a sage mode Jiraiya-Toad Sage(but form imperfect had to combine with the elder toads)...Orochimaru-Snake Sage(but imperfect as mentioned by Kabuto...Tsunade-(Could likely be)Slug Sage(And have an imperfect version of it which could be passed down to Sakura)...Well these are all theories guys tell me what you guys think..!