Out of all korean drama that has been released this year this is one of the most satisfying one that I've watched so far. The storyline is great but still waiting for season 2. The actors and actresses are so good! Im so impressed how good Song Kang acts. The animation is LEGIT WOW! I super duper recommend this KDRAMA to THRILLER/ACTION fans out there. This is super duper AMAZING! over all 10 stars. I watched this drama for only 2 days and I miss this already... I gonna rewatched this again. Thank you netflix for having this super duper amazing drama before this year ends., ?