K2 was my first drama of Ji Chang-wook. It got me from the very first episode. Everything about this drama is amazing. The scenario was unpredictable. A mixture of action, politics, love, life. If you don't know anything about politics, this drama is one of the good ways to turn on a light in your head about the way it works. My favorite character was Choi Yoo-jin. I felt sorry for her every time I saw her decisions. I liked how strong she was and the way she secretly protected and showed her love was sad. I wished a happier ending for her but anyway :) Now going for the soundtrack...one word...STUNNING. Have never heard a better one before. I get goosebumps every time I listen to a track of this drama.