Board Thread:Theories and Speculation/@comment-25283946-20150203145352/@comment-26072216-20150203194059

Well, kekkei genkai is when you create a new element from two base element. Blaze release is not a kekkei genkai. Blaze is an element+yin chakra. Blaze is an enhanced fire, not a kekkei genkai or Sasuke or a simply Uchiha can use it when are young, if it is a fusion of two element as Haku or Yamato has done. Another proof that blaze is not a kekkei genkai is black lightining. This is an element with a dark color, as fire. Darui as well the third raikage can use it, and Sasuke too and Kakashi when have the sage chakra. Obviuosly we know that black lighting is not a kekkei genkai, so blaze release will be the same.

Page 9 of chapter 316. They are talking about yin/yang quality control as they've talked about the elemental quality control before. So we have 5+2 type of chakra.