King of the Demon

In this world  of magic and demons, the Demon King still does not have a Queen, for he has not yet found her. In this world, the military dedicates their souls to the royal family, and this are called Soulists. Soulist act as the King and Queens Army, and harem. Seeing to every need of the royal family. Recently, war as broken our and a mage has been summoning people's mates, killing them.  Thus the King has decided to use the forbidden ritual to magically summon his mate, you, to save you. But you are not from this world and these customs. The King and the Soulists are loving, adoring you. Their Precious Queen.