Y/n is a normal, maybe little boring girl who loves her life. She has a perfect and handsome fiancé, she owns a bookstore and thinks that she finally will be happy, but is it really true? Jimin might be an ideal man but he and his friends hides a lot of secrets, which can destroy their relationship. The biggest one is about him being an angel, but what about Y/n...? What will happen when certain demon decides to show up in her life? What will she does when the truth will be revealed? Who will she choose? And most importantly... does she even has a choice or maybe her fate was decided decades ago?