Acting seem forced. The private moments could have more passion and not just the implied sex. Even the double entendre needs more convincing. The female lead acts almost like a pre-pubescent girl that was seduced by a much older man. The confrontational scenes also failed miserably. Not sure if I want to really spend more time on this series based on other people's reviews.
The dialogue needs a little more polishing, but I can't comment too much as I am reading the translation.
For someone who is supposed to be older, the male lead seems to fall into a teenage type of lust. His secretary comes in at the most inopportune time with no regards to privacy.