starts of very good, but quickly becomes predictable and boring. no chemistry between the main leading actors and the age gap between them is very obvious. the show also failed at gaining empathy for Ji won, maybe they could show more of the mistreatment in her previous life, in the first few episodes for a better revenge build-up.
also Na in-woo cant act and he is better suited to take on robot roles. best performers are song ha-yoon and lee yu-kueng whom are doing their roles very well.