Anything to do with death,ghosts and the after life I will always eat it up and this drama has everything I need and more. I love the idea of grim reapers being a punishment for people who unalived themselves coz that's where most of the pain and character development comes from. I also love that we spend most of the drama trying to heal people who feel like life is not worth it and are ready to to end it all also the backstory with koo Ryeon and Park Joong-Gil is so tragic but also worth the watch the actors really put their all in this drama and you can tell.