Board Thread:Theories and Speculation/@comment-1512913-20150116120105/@comment-17623-20150116134203

NeedleJizo wrote: What I don't get is that first, we were told that chakra was a combination of spiritual and mental energy; something that every living thing has.

Then it's retconned into being the product of some bullshit fruit? And if that's the case, how did senjutsu come about?

Technically yes and technically no. Chakra is the combination of the users spirit and physical energy or whatever it is they did to make ninjutsu. But the origin of that was Kaguya and the Fruit. Natural Energy and thus Senjutsu are most likely natural.