Well the headline says it all.
we know the diplomatic and the clash between South Korea and the North Korea. Hence I won't bicker much about it and will go straight to the points of what the hypes is all about.

Firstly,It is basically the first K-Drama that has brought up North Korea's culture, customs and people in a candid way. It also showed that Koreans actually have the same ethnicity.
There is a cultural difference. Like being to cozy in the public is not expected or wearing short skirts is not warmly welcomed. But things like this doesn't count that people there are very hostile or always prepared for war. The local customs and their day to day life says it all in this drama.
And that's why a case was filed in South Korea against the drama for bringing an outlook that North Koreans are very friendly alike.
So yes , back there this drama is breaking the stereotype outlooks against North Korea.
Secondly this drama brings up a love story of a North Korean soldier and A South Korean Rich girl. This is the first here too. So the story line is unique and refreshing. It will keep you on the sit even if it ends as their love and the people around them struggles for bringing them together
Lastly, the cast and ost brings the storytelling in an impeccable live action which eventually you will fall in love with and miss it as it ends.

Buckle up and go for it!