Board Thread:Theories and Speculation/@comment-27717552-20160513151229/@comment-26773508-20160514183451

GreatestSin wrote: ^^and save for some broken ones like nagato, uchihas or jinchurikis there are actually not a lot who can compete with him,

so dedicating years to master a jutsu that also takes a immense amount of chakra, which will also cripple ones own hand without perfect sage mode seems rather useless :) That's true only for Wind Release: Rasenshuriken. It's not necessarily true for something much less ambitious like, say, a simple Fire Release: Rasengan. Naruto actually developed Wind Release: Rasengan before developing the Rasenshuriken. While the Rasenshuriken's microscopic chakra needles will cause severe damage to the user's hand if it's not thrown through Sage Mode, there is no evidence to support that Wind Release: Rasengan has the same effect. So I don't think a Fire Release: Rasengan would burn Jiraiya's hands.