Was this recommendation book a fantasy novel? In the beginning of the plot, was the demon king dead and his soul entered his wife's stomach?

I recommend "The Queen is Grievous", a fantasy romance novel from the Western fantasy genre. The main character of the novel was Queen Arion, who was in danger of being thrown off her throne after being accidentally pregnant. In this alternate world, she would encounter various characters such as the Demon King and the Prime Minister. The novel told the story of the Queen struggling in the foreign world and constantly dealing with various crises. I hope you will like this story. Muah ~