Demon Kingdom

The Demon Kingdom is a country in the world.

Locations

 * Demon Lord's Castle
 * Duster Tower
 * Tezan Desert

Royalty

 * Demon Lord
 * Viper (Princess)

Four Heavenly Kings

 * Heine of the Flame
 * Russell of of the Water
 * Gadalkand of the Earth
 * Faustress of the Wind

Officers

 * Gil of Strength
 * Rista of Knowledge
 * Camus

Information
The Demon Kingdom is a neighbouring country of Grace, Due to the Sand King that appeared out of nowhere turning their land into sand (known as "Tezan Desert"). They are forced to declare war on Grace. The Demon Kingdom is very poor and its citizens starve as they could not create farmed goods due to their environment.

The Demon Kingdom has a friendly relation with Toris, and even created a coalition against Grace with them after a diplomatic insult.

The Demon Kingdom was dismantled after their surrender in Volume 5 to Kisaragi, and Grace. Citizens of the kingdom seek refuges in the newly built Kisaragi base inside the Darkwood.