I used to be Seraph Archangel Lucifer, a seraph in heaven. For Millie, the daughter of the Demon King, I abandoned my identity as a seraph and went to the demon world and became a fallen angel.
In the confrontation with the allied forces of gods and demons, Millie died, and I was defeated and fled to the human world, transferring my soul to the body of a dead human named Hill. From then on I started living as a human being.
I swear to God, one day I will defeat the heaven and the devil and avenge Millie. Not in the name of the fallen angel Lucifer, nor in the name of the human Hill. But - in my name
