Good points: I enjoyed each cast performance, it was action packed without any dull/ boring moment, drama managed to deliver multiple genres action, thriller, melodrama, romance while bringing up heavy society issues in just 8 eps.
Bad points: Drama was too gory for my taste in some scenes and i`m fed up with cliche psycho chaebol villain. I saw some comments of some people having issues with ending message, but i`m just taking whole drama at face value. It`s fictional story about one character and his journey. Viewers shouldn`t expect drama to be realistic or solve society issues