Whats so special about this chakra? Why does it require constant training to maintain? Even tailed beast chakra doesn't require daily, unrelenting training. Is it a kind of hiden technique-attained chakra or some sort of kekkei genkai? Why does it only belong to ninja monks of the Fire Temple? Didn't the databook say anything about this? (talk) 07:03, March 10, 2012 (UTC)

No. I don't think it said any more on it to answer those questions. But you can assume it's because it's a Buddhist practise, it requires you to possibly achieve some level of "enlightenment" in order to control/use it.--Cerez365Hyūga Symbol 07:12, March 10, 2012 (UTC)
Was this ever mentioned outside of anime ? I don't remember.
--Elveonora (talk) 15:40, March 10, 2012 (UTC)