I like how the movies shows different type of reasons people would visit a sex therapist, however; I was expecting more extreme cases versus the few basic/common reasons why the following men visited her. There are plenty of interesting "Mature" action scenes.

As far as music, there were maybe two audio tracks that sounded like it was ripped from vintage adult movies.

Is it interesting movie? Yes, there were times during the movie where I had was so engaged to what was going to happen next, which was intriguing. 

Even though I couldn't find a version with subtitles at all,  I was still able to comprehend most of the story based on spoken korean and the context of the story.  How accurate my understanding of everything is still unknown, unless I have a another person to watch and then compare what we think.
I have this movie on my re-watch list once my Korean improves a lot more.