The Spirit Tree's direct creation. That was the Spirit King. There would be only one king existing in a period of time. After meeting their doom, a new king would be born.
'Heine' was one of the kings. He didn't know who the former king was, nor did he want to know.
He was an existence created solely for the sake of filling in the throne. Spirits were born using the power of the Spirit Tree. However, the kings had a different magic supply. They were born with abundant power, and contained traces of the Spirit Tree's life itself.
They had a special power, and that was to communicate with the Spirit Tree and receive information from it.
Heine never doubted his existence. He instinctively knew his purpose and managed to fulfill it well. From time to time, he would be called by the Spirit Tree. Apart from those calls and some trivial matters concerning the spirits' livelihood, he had freedom.
