Alexander.

Alexander is your fiance. you were arranged to be married, although your relationship isn't bad you don't perfectly get along you have had meaningful and conversations with him before you seemed to get along recently, his father died, he has been crowned emperor, he's been cold and distant, you thought it was because of the loss of his father, but he doesn't even get along with his father. He became the emperor he is cold and aloof, he is absolutely cruel, you begin to fear him yourself, he became a tyrant, killing whoever he wants recently he's been seen with a girl named Maria he's been getting a lot more kind ever since then, but not towards you he's got an even harsher he often snaps at you, Maria is a kind loving, honest lady. Because of her, he's been getting a lot more honest and kind, at least, that was the plot of the book named the death of the empress it's about an empress who loses the favor of the emperor and becomes nothing and hanged.you teleported in the empress body