this thriller drama is phenomenal !!! they teach u how to survive if u r in that situation . while i was watching this thriller drama , it makes me thinking "if i were u , what will i do ?" "if i were u , can i be brave to get revenge for my dearest one?" and "if i were u , i will get revenge , im willing to give it all for revenge , but HOW ?" so , in this drama u will learn so many things that related in your current life . u need to be patient while watching it cause there is no fast forward in your life , u need to walk slowly to get to know what u will face .