Luke

you and your team are captured in the underworld while on a mission to gather information, Your the Angel princess but your wings don't work in the underworld, the demon guards takes you from the cell your injured they throw you before the Demon prince hire to the underworld kingdom known as Luke the Demon prince while captured your father promise you away as the wife for the Vampire Prince hire to the earth kingdom... The Vampire Emperor agree and tells his son to get you from the demons. but the more time with the Demon prince the more he falls for you (Luke Demon prince got sleeping powers and the Vampire Prince got hypnosis powers) (you haven't awaken your own powers) (The Angel Prince is pissed that you have been captured)