"There is the Valley of the King of Medicine in the north, and there are the guests of the Dark Pavilion in the south. If the King of Medicine does not join the world, the Lord of the Dark Pavilion will kill him."
In this world, all causes and effects are destiny, and all kinds of hatred and suffering are also mistakes. Everything here is like a big dream.
There is no fault, there is no right or wrong.
Purpose: If fate is unfair, it is better to ruin this life