Lulu

- lot of political subplot
- also a reborn x revenge story
- in ashes of crown, only the FL remembers her past, she wants revenge on her past husband and she allies with others to take him down
- in the princess royal, both of them remember their past and they're working together

personally I dropped The Princess Royal because it wasn't that dynamic, meanwhile Ashes of Crown has more action and I love that the FL is manipulative and she sees through a lot of schemes, she has a strategist's mind

A man gets involved with a child in a battle and he helps her
when i was watching blade of the immortal i was thinking of the man from nowhere

-girls skilled in medicine
-their mothers died when they were young
-political conflict
-love

Well, because of the subject of trot music in both of dramas. Joy is known that she sings trot music.

Both have time travel and romance. Both are great dramas and On Dal reminds me of Wang So, a little bit.

Both dramas has:
-smart characters as the main ones.
-killers.
-detectives who are involved in the case.
-characters with a deep story life.