Board Thread:Theories and Speculation/@comment-27821571-20160915183730/@comment-27973430-20160915215725

But that would mean that Kurama didn't allow Mito to use the ability, not mention Naruto used the power without Kurama's permission, Yagura also didn't get Isobu's permission, and than there is Yugito Nii's use of Matatabi's blue fire (you can't tell me that isn't unique to Matatabi I read somewhere that it was), Han's boil release (it is classified in the info box as kekkai genkai but not in the abilities section there it is stated to be from Kokuo).