If you love one story, you should love another. It doesnt have 100% resemblance but its also about trying to get rid of absolute power from one person for the sake of royal family.
The concept of the story is not really the same , there are some tweaks into it, however as the story progress, the ending makes both similar. if you like either of each, you would like the other story.
Both cast the same male lead, and both is about searching for fathers and finding success in the respective industry.
Similarity? How the male lead is sick or having family members opposing and yet the romance are going strong. Good medical case study for you to study and learn about from the perspectives of the patients too. Perhaps only in drama, can we see ill-ed person having a lasting romance.
The main character has a split personality which happens in both show. Also, the main guy is both oozing out with charisma.
Both involve girls dressing up as guy due to family circumstances. The romance though.... ain't a bit similar at all, sad to say.