I like you, S. Because I, too, only watched that drama for Sung Joon. And by watched it only for him, I mean that pretty much literally. I didn’t start until someone told me that he turned out to be this crazy villain which is exactly the kind of role I want him to play (although in a much better drama, ideally). So I started watching around episode 9 and then when I heard we didn’t see him again in the last couple of episodes, I didn’t bother finishing it. I just wanted to see him play the villain, because he’s so good in those darker roles.
And no worries about asking questions, although you reminded me that I need to be doing other stuff right now, too. :p