The Night Owl (2022)

Both are historical political stories set in the palace with an ill king, an evil queen, a crown prince no one wants, and corrupt ministers.

Main differences are of course the POV being that of a doctor in TNO but that of the crown prince in Kingdom and of course Kingdom being focused around a zombie apocalypse

Must watch
Superb cast includes ryu joon
Both historical but Alienoid is more of a sci fi movie

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