Board Thread:Theories and Speculation/@comment-26388300-20150611222229/@comment-26005711-20150817112933

GreatestSin wrote: the mastery doesnt matter,tsuande labelled wind release rasenshurken as kinjutsu because it destroyed the users cells too, this is how it works, naruto mastered the jutsu while he used it agaisnt kakuzu but since he didnt have sage mode he crippled himself,

only SM or KM or any other mode was able to negate this side effect :I Rasenshuriken is Rasenshuriken, Naruto throw two Rasenshuriken, and I didn't see adverse effects on Naruto.