This drama has many tropes, cliches, stolen scenes from other dramas etc.
But the net effect is that it works.
The chemistry is sizzling for both couples and that I guess is the x factor in this romcom which had given it such a high rating.
The FL is just so charming with that wonderful smile. Haven't seen such expressive eyes and smile since Park Min Young.
She carries most of the drama with her comic timing as well.

Again - there is nothing new happening here - yet it's a wonderful drama to watch.