Dear Jennifer,
Please don't think that I want to argue with you, OK? It seems to me that the 3rd close star to BYJ that you mentiioned is Kwon Oh-Joong. Well, I don't know much about BYJ and K-ENT. It's good, though, if Kwon Sang Woo is another good friend to BYJ.
As to the storyline, Cpt, I really don't like to see sad drama. Cannot the script writer and the director bring some joy to the audience? I read an article saying that the taste of Korean TV audience changed, now they prefer comical drama. Don't know if it's true, however, romantic comedy is always my preference. Well, if it's really a sad drama again, for JW's sake, same as you - will surely get a copy once it's out in the market!