Recommendations

XX is a web drama but it is so well written and produced. I got a huge crush on the main female lead played by Hani <3 :

Similarities with Search WW :
- Strong female leads
- Womens empowerment
- Rebuilding friendship / healing
- Badass women

Both female lead are high born loyal who can see the future and tries to combat against what the bad future holds. Eventually, their male leads help them out. In both dramas, male leads also think that the female lead is part of their suffering from their past which leads to misunderstanding.

In both drama, the sincere friendships, love and business lives of middle-aged people are featured. Also, both have multiple couples. Both have a pretty funny plot.

Both have a modern person travelled through time to historical era, and involved in a sweet love story with main guys who are both smart and resourceful.

They're both about main character's time travel. Both of them are effortlessly funny. Both have some Little Mermaid plot how male leads has been tricked by bad girls who pretented to be female leads.

Both drama deal with forbidden relationship that are more than physical one. They can be judge harsly if watched only from a society point of view but we can also sympathize with them if we watch with an understanding mind.

Both dramas are similar in
-time-travel
- Romance
- Smart male lead who makes viewers heart fluttering
- Joseon Historical Figures
- Perfect Pairing and Top notch Chemistry.
If you love Mr. Queen, you would definitely enjoy Queen In Hyun's Man too, vice versa.

Both shows have a police/detective theme where the protagonists solve cases involving crimes committed by the villains of their respective series.

Same actors; similar level of sweetness
Watch if you're into cute romantic fluff with supportive side characters and relatively little scheming second leads!

both are about an investigation/police trying to catch criminals. brain man has more suspense and violence but both male leads have a tragic past and are trying there best to get over it. also, the male leads start void of emotions and they meet a woman, in brain man its a psychiatrist but in final life its an old flame. memories are involved in both of them, they are a key part of the story.

same male lead but total different story. I think both couple had a good chemistry .Throughout the story the main lead did not to end up together due to some misunderstanding and other stuff

In love script, story in FL dream almost same as ashes of love's story when jin mi and xu feng through trial in mortal realm.
~ similarities between love script's FL Dream and Jin Mi and xufeng trial in mortal realm :-
- both ML is a royal and FL is a doctor
- FL found ML and treat them
- at Their wedding day, the FL died

Both of these dramas are historical Korean dramas focusing on ML's that are secret royal inspectors. In both of these dramas, the FL ends up helping the ML.

- similar storyline of how someone (the character) is being punish for the wrong doings because they committed a crime so terribly long ago and how their punishment was to help others

Both are heavy political dramas and have a Crown Prince as ML. Both crown princes are very similar and want to be good kings who really care for people. Haechi has more action while Secret Door is more psychological. One thing to keep in mind is that the 2nd male lead in Secret Door is also the main character in Haechi. Both characters and dramas are based on true story. Obviously each drama tells its own version about personality of this prince (and later King).