The Destiny Of a Prince

Y/n is a normal teenager who was always alone and used to spend most of her time reading ! one day she finds a book which is kind of unique and mystical. She takes it home and opens it but when she opens it a miracle happens. Her room gets filled with flash and she falls down. A boy appears in her room who was wearing royal attire. She says while stuttering " Wh-who are you? "
what you think who was that boy?