This drama deals with loss and letting go. To me, this is the single line summary of the series. I will first write about the positives and negatives (my opinion!) and then how it made me feel.
Positives:
The drama tried to tackle the difficult issues of death, loss, despair, guilt, trauma and finally of letting go. A very complex set of subjects to deal with in the first place. This drama delves into super-natural and narual worlds to deal with it. It has main lead dead characters (who show up as ghosts) and also main lead alive characters. So it is a unique plot and a perspective which is uncommon. The story has quite a few very touching moments about guilt and letting go that was hard to watch as they brought out raw emotions on screen.
The drama does not put the same sex relationhisp at the center of the narrative. It is important but not the main focus. The subject matter is.
The actors playing Yoon Oh's and his mother's role did a phenomenol job. Also the actor playing the role of Mr. Yu. The rest of the team did an OK job, nothing special.
The OST's were good.
The produciton quality was also acceptable.
Negatives:
The story has many loop holes in terms of plot. It is a fantacy drama with ghots and humans and suspension of rational logic is necessary yet the execution of the supernaturals was sloppy. Even in this make believe world there needed to be more rationals of why certian things were happening and others were not. There was none given.
When the drama ended many issues were not resolved or unanswered, which in general is not bad. But for this show it left a feeling of incompleteness.
The chemistry between the main lead was not steller. The more convincing chemistry was between the mother and the son.
My feelings:
TBH, I have mixed feeling about this. I very much enjoyed some parts and others not so much. And the quantity seems almost equal. I appreciate the difficult subject matter. Many scenes brought tears to my eyes got me seriously thinking about loss and letting go. And I always enjoy a drama/movie which makes me think about things which I generally don't. So for that I laud this drama.
But the execution was lazy. This drama could have been far better if only a bit more attention were given to details and setting up the premises of the make believe world. One of the main lead's acting was average and that made the drama not such an enjoyable watch.
Also the ending wsa not quite well done. I do not want to give spoilers but the drama, in my opinion, did not need the last 2 minutes.
I must mention again how beautifully and convincingly the actors who played Yoon Oh and his mother's role played their characters. For their scenes only I can rewatch the drama.
So over all I say, watch it with caution. One can find beautiful moments and also can be supremely frustrated.