i only have good things to say for this drama
first of  all,  the 80's theme.  nothing could make me happier than 80's 70's theme and the music that comes along with it.  the cinematography is really good.
secondly, the story,  though it was simple and nothing complicated,  it brought out so many meanings..  like gender biased,  the korean society in 80's. the impact of cold war going in the whole world during that period.  communist capitalist clash.
thirdly, the cast..  they were really really good,  jung hee reminded us all of our high school crushes. loved her acting and her character as well.   the supporting characters were also very real.  from jung hee's mother to that aunty.  
overall,  such a good drama..  cried and laugh.  i wish there were many other dramas like this.  i thoroughly enjoyed watching this one.
ah,  and lastly the music.  I'm already an 80's music fan,  and the background songs like the silence of the lamb  was so good.  i would highly recommend this drama