I Was Reborn as the Demon Emperor and Bound to the Savior System.

If I were the savior, then there would be no devil in the world. He traveled through time and became the Demon Emperor, thinking he could get rid of his title of good guy. I wanted to kill everyone, but ended up being bound to the savior system. As a result, the system said: The system program is wrong, the time travel location is wrong, the host is reborn as the Demon Emperor, and the main mission of the main world is promulgated: pacify the darkness and save the world. Other worlds will be opened in the future, currently the main world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.