Kyi is the very essence of life, it is a living breathing creature that had existed far longer then any Elder G.o.d,

Kyis body is broken into the four basic Elements of Kyi

Light, The basis for with all purity and good flows from one of the two elements of Kyi and its opposite Dark the second strongest.

Both of these are in consist flux with each other binding for more control over ones element.

The third element is Demonic one of the weakest and rarest element in Kyi.

Demonic Kyis full extent is unknown for no mortal has obtained Demonic Kyi.

The Fourth and strongest of the Elements of Kyi is Life. The element that binds the Multiverse into the matrix.

Every human has the power to control at least one to two types of these Kyi. It us very rare to have a mortal have control over all four of the elements of Kyi.

That person would be considered a Demonborn and the savior of the universe in it's most darkest hour