Although the plot interest solely relies on keeping secrets and never telling important and at times crucial facts to the main leads I think it went too far for melodrama's sake.

I still give it a 9 because the main couple does really well, but personally, I would have preferred a more positive last 4 episodes if, at least, the most crucial fact had been known to the ML. This could have been easily achieved by the writers and I believe it would have made more sense, helping to balance all the previous sorrows that are pretty heavy all throughout the drama. I thought it was really a shame to harness till the very end on an overdramatic plot.