A person's ability to prophesy and turn fortunes around but absorbs the misfortune and transforms into a demon, in turn, is a great concept. This alone can carry a whole series and more. The writer had the whole world in his/her hands and the director had a good cast at his disposal. Everything was ruined due to the writer's lack of sense and the director's lack of direction. The worst actor is the male lead with his pity party all over the show which meant a lack of direction. The best acting: Kim Dong Young, Yoon Ji-Hye, Hwang Young-hee, Lee Ho Jung, Yoon Yoo Sun, Kim Bo Yun..the rest went from awful to worst and the worst was the male lead, unfortunately. Seohyun, who is usually a show stealer, played a mediocre part for a female lead but shines here and there and eventually shows her light and blinds even with your shades on. She is an absolute doll and should be treated accordingly. A better story structure, a stern direction and a lot more creativity could've made this one of the best shows ever. Awful editing, terrible directing, poor storytelling. Shame!
There is also the matter of incest in the storyline which should have been resolved early on in the series.