When the world was on the brink of destruction, she was born from darkness. The Demon God emerged into the world to save it.
She used her demonic flames to burn away disasters that even the gods could do nothing about, protecting the peace of countless worlds.
But when peace came, the gods joined forces to "invite" the hero who had saved the world to leave. They feared her, afraid that this light born of darkness shone more brilliantly than their own. So they gave her a dignified death.
The Demon God accepted their parting gift. It suited her just fine: she had wanted to leave this world that no longer needed her.
They thought she was dead. They didn't know she'd wanted to leave all along.
She followed the gods' scheme and let herself be torn to pieces to escape. But just as she was leaving, a voice claiming to be a Rebirth System stopped her. It said, "I have the dual labels of 'Great Merit' and 'Tragic Consciousness,' so I'm perfect for doing missions."
From then on, she traveled through one small world after another. No one knew she'd once protected the entire universe. They only knew that in every desperate situation, a gentle light always arrived at just the right moment.
The Demon God will never disappear. She's simply gone somewhere that needs her more.