Both dramas revolve around a smart female forensic examiner who captures the attention of a judicial official / prince in charge of criminal lawsuit. They end up solving mure cases together and havig feelings for each other.
Protagonist trains to become stronger and take revenge on those who ronged him in the past. He is naturally gifted but still needs to increase his spiritual power. In both stories they save the girl who then supports them on their journey. Protagonist has to keep his real identity a secret. While training, he makes friends who support him on his quest. Also, same actor playing the protagonist.
In both stories the protagonist trains to increase his spiritual power in order to take revenge on people who wrongeded him in the past. Having to hide their teal identity, they have to overcome many difficulties including some kind of sickness or curse in order to achive their goal. Supported by the female lead they make friends who will support them on their quest.
Both are the stories about Hong Gil Dong. Main character fights for the poor and opressed while stealing from the rich.
Both depict the story of how it was growing up in a particular time period. Although they include the main characters love stories they equally concentrate on their family life, social issues and the influence they had on the lives of these characters. Romance is not the most important part of the story, it's simply part of their lives, as is family, friends and everyday obstackles they have to overcome. If anything, they are the stories about family, growing up and what kind of adults they became while dealing with changes in the world that surrounds them.
Similar premise. Both stories are about three brothers who lose their parents and become seperated as children. They reconnect later on without knowing who the other two are to them. Both action dramas.