Interesting storytelling and emotional depth of the characters. It is captivating in its exploration of love, sacrifice, and the power of human connection.

The chemistry between the two lead actors, Hyun Bin and Son Ye-jin, and their acting are incredible!

The unique storyline and the way it seamlessly blends romance, comedy, and drama while dealing with political and social issues is remarkable.

The drama's ability to create empathy and understanding between characters from different backgrounds and ideologies is also a strong point of this must-watch series.

Not many productions dare to bring a story between two countries (South-North Korea). The production values, including the beautiful cinematography and soundtrack, are also highly regarded.