Is This Reality?

In a chaotic world lived the one and only, Kira Miyazuru. She has no magic whatsoever, but then she met Takeshi. They went to venture throughout the world to defeat Dagriohm, the Demon Lord. To defeat Dagriohm, they must first defeat his seven descendants, namely Xinquedea, Dromaeo, Véronique, Ruthorham, Caduceus, Hex...