Board Thread:Theories and Speculation/@comment-26138683-20150322132758/@comment-25549954-20150323132215

@Umi Exactly and that is why I believe all Ninjutsu are Yin-Yang based but pure Yin and Yang chakra is not released, come to think of it, the Truth-Seeking Ball being made up of Yin,Yang, Senjutsu, 5 elements could cancel out Yin-Yang based Ninjutsu because the Senjutsu chakra in TSB can alter the yin-yang balance in ninjutsu (like in Summoning: Impure World Reincarnation, reincarnated individuals are affected by TSB) and TSB can also get altered if the amount of Sage chakra is not balanced with Senjutsu-Yin-Yang in them, its more like the Tailed Beast ball, if the black and white chakra is not in 8:2 it will backfire. But there is one flaw and that is we don't know whether Yin and yang could cancel out each other, I mean the Yin and Yang are not like matter and antimatter stuff that when combined cancel out each other and create explosion and the stuff gets lost, I think it is more like creation, when Naruto used yin-yang release he mainly used it to create Kakashi's eye, so its not like the chakra is lost or may be who knows we can't compare real world physics (energy can't be lost). Nonetheless Jutsu utilising Yin and yang are difficult to master and its a rarity so that is why they are Hiden.