Zijin was told that he needed to travel through various worlds to help the host fulfill its wishes, gain soul power, and repair his own soul.
What, if you want to see the mountains and rivers, then I will usurp the position by the way.
What, if I want to protect my sweetheart, then I'll kill the hero and heroine.
What, if I want my brother to be happy, then I will just destroy the human race.
...
Zi Jin is gone on the road of darkness and will never return.