Dilhade

Dilhaide (ディルヘイド, Diruheido) is the Demon Realm and the primary setting of the events.

Laws
When these rules are violated, no matter what the opponent is, the Demon King of Tyranny will fight for life and destroys them.
 * 1) This country does not allow destitution.
 * 2) This country does not allow malice.
 * 3) This country does not allow tragedy.

Seven Elder Demon Emperors
2,000 years ago, just before Anos reincarnated, these seven demons were created from his own blood. Their existence was created and gave life by magic, not by mating. It was prepared because he needed a body that inherited his blood when he reincarnated.