This is ONE unknown, underappreciated GEM of a drama, lemme tell you.
It starts out super silly and you might cringe a little at the first episode (well, I did and almost stopped) but after that starts the magic!
What makes a good drama is not the looks and fame of the actors, as is in most cases these days - but a lot of things like the story, the portrayal of the characters and the substance in the series. Saengchori for me had all of that).

Sure you haven't heard of this k-drama but give it a try. It's gonna hurt your sides laughing.
:3 G'luck!