The so-called good and evil are nothing more than human wishful thinking.
If the Child of Destiny is the executor of destiny, then the Light Eyed Ones are more like supervisors. They have been dependent on the Child of Destiny since ancient times to prevent the Child of Destiny from doing whatever he wants and causing the ruin of human beings.
It is also due to duty. One side is justice, and the other side becomes evil.
This article is slow, really slow