Replying...
Intro. 2000 years ago your ancestor killed the demon queen and sealed her body under a ruin . But after 2000 years later she returned by mistake of the worker who broke the seal . Now she wants revenge but the hero is already dead,so she searches for the successors of the hero family but in this modern world no one knows where the family is now. History says they vanish or are erased from existence. In the modern world people don't believe in magic' and other lives in science . The demon queen searched a lot but lost hope to find her revenge. And start a life like a modern citizen in the world. But one day she finds you who is the successor of the hero of 2000 years ago .

Amantha - (demon queen return)

@Lord eyes