The Reason Why I Quit Being the Demon King

Synopsis:

The Demon King invaded the human realm after traversing 665 realms during a chaotic time. It was a bold legend who stopped the conflict. On account of their heavenly penance, humankind scarcely figured out how to make due. However, this resulted in the tale of the new Demon King. Meet Evil spirit Ruler Demiourgos, the 666th. " I quit being the Evil spirit Lord," he said, prior to leaving the devil domain. This is a tale about an out of control Devil Lord and a legend who turns into his subordinate. For what reason did the Evil presence Ruler stop?