This drama was very uneven. The first couple of episodes were terrible and I almost dropped it, but I finally kept watching and it got better. Then the last two were also very bad and the ending sucked.
The worst thing was the writing. The story was like dozens we've already seen, nothing new there. Totally cliché situations, you knew exactly what would happen, the kind of sub-plots that would be explored given the setting.
The male lead was serious and sincere, I liked his acting a lot, he never overacted. He was manly and believable. The female lead was very exaggerated in the beginning, but got better, although most of the time she oscillated a bubbly enthusiastic face or a sad self-pitying one. But she's pretty and overall likeable, although the character's choices are sometimes incomprehensible.
Secondary characters were just "types", the usual types one finds in such movies. Each one had almost nothing else than what could be their main description. They did have a back story, but that didn't add any depth/nuance to their character.
What was something of a saving grace was the music. All the songs were unexpectedly high quality, and well-executed. That's the only thing that one would want to rewatch out of this silly story.