Eres mi primavera

I have two major problems with this drama

1: What should have been the main plot ( the murder mystery) was turned into subplot. In some episodes there wasn't even more than a scene or two about it.

2: What in the world did the do to Kim Dong Wook? I mean his dressing, his hair style, everything was so awful. They gave him such an unappealing outlook. One scene when he looked rather good and neat, he was forced to go back to his idiotic buttoned to the top shirt and stupid hairstyle.