- Both dramas are by the same writer
- Both dramas feature a ML who is a misfit rebel type going against the establishment

- Both are set during the same time period
- Cruel Palace is more focused on the court machinations behind Crown Prince Sohyun's death whereas My Dearest deals with the Qing invasion and its aftermath in the wider country

- Both are set during the same time period although in The Three Musketeers Crown Prince Sohyun is a protagonist

- Both feature characters who are followers/supporters of Crown Prince Sohyeon who become embroiled in the political turmoil surrounding his death
- Both heavily feature action and fight scenes

- Both are set during the Qing invasion of Joseon
- Both have action elements and depict warfare with historical accuracy
- Both feature Joseon womenfolk having to be rescued from the "barbarians" by the men of the story

- The Night Owl concerns Injo and the death of Crown Prince Sohyeon, which is also covered in My Dearest
- Ahn Eunjin appears in both

Both dramas feature the hotel business. The female lead is an employee who deals with different guests. There is some drama around the management of the hotel.

Same monarch and time period. Some of the same characters. The Red Sleeve novel is written from the perspective of Deok-im so it is said that The Red Sleeve drama will have a greater focus on the female lead compared to 2007 Yi San.