Board Thread:Theories and Speculation/@comment-6769189-20150307180344/@comment-6769189-20150312063224

Ok, so from Godais post I feel like I have a better understanding of how Chakra transformation works. Before I had a vague idea that Nature Transformation when Yin made the element and Yang gave it a physical presence. However, I see that chakra is converted into the element, with Yin and Yand being their own conversion of sorts.

So looking at Yin, it is the power of imagination. It can create form from nothingness. If we look at Nara's shadow techniques, they are Yin applied to an already existing thing and alters its properties. Shadows have no mass, and are not matter, until Yin gives it the properties of matter. Since the shadow is "physically" present it may not need a small amount of Yang, although that can go either way.

Yin is also characterized by the color black, I believe in the manga, the picture of Hagoromos Yin energy was black(i have to double check later), while the Yang is white. Yang is also translated as "dark style"

In Blaze, we see that it is fire, but we also see that has properties that no other fire has. Applying Yin would change its properties and behaviors, but since Yin is not a nature transformation, it wouldn't count as an advanced/combination Nature. This is why it still counts simply as a Fire Release, or in this case, the highest form of Fire Release.