The 230's were a period of upheaval for Harmonia and the world in general. Major internal discord began around the year 230, where rumours of the death of High Priest Hikusaak allowed Kranach Rugner to form the Scarlet Moon Empire on a bloodless coup. The Harmonian city of Rupanda was taken and renamed Gregminster. The Sovereign Rune, one of the True Runes in Harmonia's possession became the heirloom of the Rugner royal family.
The civil war continued across the nation until the rebellion was crushed by Maroux Blight in 237. For his efforts to preserve the nation he was given land of his own and so the Highland Kingdom was founded providing a buffer area between Harmonia and Dunan, essentially cutting off Harmonian ties to the southern regions of the continent.