The King is Dead and you're the only one who can commune with the Cosmos to name the rightful heir to the throne.
In A Cruel Demon's Fate, you play as the Oracle, a human living in Asca'ath—the dimension of Demons—in the city of D'Mensi, and the king has just died of unknown causes. You're now undertaking the biggest task you've ever been handed as the sole person who can speak to the Cosmos: naming the new king.