Ok let's start by saying this is such a mature story, I couldn't stop crying in the last 5 ep, of course the acting is great from all characters even "the goose" :D
Even if the theme of death and loosing someone is strongly presented throughout the series, it was well done : being a kid or a grandma we all experience something like that in life and watching this series is such a comfort, trying to comfort the viewers well done.
the disability representation is good, although we don't see much of the physical struggles, we do get a good picture of the emotional struggles, fmc' s thoughts on relationship and striving to improve to make up for her shortcomings, and the mmc accepting her the way she is, and not seeing her disability as a disadvantage.
( just some of the good points of the scenario apart from the different ideas each generation believed in... understanding each other specially the new life style of modern woman, the representation of the country and working together to improve hometown....)

the way each character had enough screen time to know their story, and the grandmas oh I was so attached to them more that main characters ?

just a good story, a good acting, heavy theme, simple production, all in all executed perfectly.