Without posting spoilers it's difficult to explain why I liked this drama so much.
First, the story was interesting from beginning to end. I didn't feel like there was any lag as it got close to the end.
Second, I easily related to the male lead because I have some of the same issues he does.
Third, despite all the ups and downs I enjoyed the family dynamic.
Fourth, good combination of romance, comedy, and friendship
Last, excellent chemistry between all the actors.