"Unoriginal" is probably how I would describe this drama with one word.
The concept isn't anything new and has probably been used over and over again in other shows and movies.
The first episode reminds me greatly of the old American movie "Heaven can wait" from 1978.
Anyone who've seen that movie will get the reference.
So, yeah, the story is rather old, but, being old doesn't make it less interesting.
In fact, I personally found the 10 episodes good enough to enjoy with little to no effort on my part.
The only real problem I had with the series was how Hina-chan was portrayed in the earliest episodes, by that I meant her personality not the actress.
I wouldn't go so far as to say that this is a typical family drama, although certain aspects was included in the story.
Given the premise of the plot, you might think that the drama would have a lot of angst, melodrama etc, but the story is surprisingly lighthearted.
Now, if you are thinking of watching the drama for the first time, don't expect sappiness though, 'cause there isn't much of that, imo.
The soundtracks was good I suppose, but not very memorable.
The casting was very good I think, in that they were convincing in their respective roles.
The rewatch value I think would be a solid 7, seeing that I wouldn't mind watching the drama again in the future, but it is not a top priority.
Finishing the review, I can honestly say that it's a drama I most likely will never get bored off,
and as such, it's a drama I can highly recommend to others.