Board Thread:Naruto Discussions/@comment-25645405-20141128183407/@comment-3279282-20141202044943

Do you understand how chakra is made and what Yin Release and Yang Release are, NoJutsu? If you would understand that, you would probably understand what I want to explain to you. Seishitsuhenka is applied to already existing chakra, while Yin Release and Yang Release is basically normal chakra, just made up of either spiritual or physical energy. If you create chakra purely made of spiritual energy, the result is Yin chakra, which is released through Yin Release. It is still normal chakra without any kind of elemental nature, hence why it can't be used to create a new nature. If you can apply seishitsuhenka to that Yin chakra or not, is another story.