The romance is sweet but doesn't keep you on the edge of your seat, although the whole care-taker and family-protector aspect of the leads is interesting because it tries to show that nobody can be perfect and strong at all times while facing the illness of a family member.
I found the plot kind of interesting for 2/3 of the drama, even though there were some inconsistencies, especially in the fact that the unit initially in charge of the case was doing a TERRIBLE job.
But once the solution got clearer, it really made no sense. The ending took 5 episodes that were really badly written in my opinion.
If you have nothing else to do, the drama is relaxing and fun but dont expect a good ending.