Similarities:
- Incorporates the same underground environment (Mafia) - where the girl gets involved.
- Both male leads share MANY of the same traits: occupation, relationships, personality etc.
- Both main couples in the two dramas struggle to maintain their relationship.
- In both dramas they develop a romantic relationship before the end of the series. (They don't end up with them confessing but being together for a while before the show ends.) Ups... spoiler? ... Sorry....

Differences:
- One is Thai and the other is from China

Just watch both of them. They're very similar to each other. They're both great and I'm certain you'll enjoy them both!

Similarities:
- Both use a supernatural way to solve crimes - and uses this element to make matters more interesting other than dragged out.

- Both share some kind of love triangle. (Have only seen until the fourth episode of "While You Were Sleeping" when writing this recommendation, so I could be wrong.)

- Both share some of the same genres. (Including Romance and Supernatural)

Differences:
- While "Who Are You" is set in the world of cobs, "While You Were Sleeping" is set in the world of prosecutors and lawyers.

- In "Who Are You" the main female protagonist can see ghosts/spirits of their victims while in "While You Were Sleeping" they can predict the future through dreams and strive to change them.

- This is also a musical drama that centers around music (The music in both are great)

- Both is a good love story

- Well-known female leads (Park Shin Hye in Heartstrings and Yoon So Hee in The Day After We Broke Up)

- Both male leads are kind of jerks in the beginning

Similarities:
- Both have a serial killer on the loose that takes an interest in the main male lead.

- Both are set in the world of crime.

- Both possess the genres of romance and comedy (and are clearly showing it).

- Both have a romance where the main male lead is above the main girl (careerwise) --> In Suspicious partner she's his employee and in Love me if you dare she's his secretary/assistant.

- Both male leads have an interesting personality and are smart.

- Both male leads have high positions (careerwise).

- Both excel in their field of work (one as a profiler and one as a prosecutor/lawyer).

- Both male leads have experienced trauma in their past and are still suffering from it in the present.

- Both female leads have an interesting personality and are also smart.

- Both deeply engages in a complicated investigation of the serial killer that goes beyond a few episodes.

- Both have complex characters with their own internal battles.

- Both have multiple cases, regarding criminal investigations that have nothing to do with the serial killer but are separate cases.


Differences:
- One is set in the world of the police while the other is set in the world of lawyers.

- One is produced in China while the other in South Korea.

- Suspicious Partner has 40 episodes while Love me if you dare only has 24 episodes.

- They both share the romance/comedy/action combination genre.
- Both male leads serves as bodyguards
- Both male leads have a military background
- Both female leads have an interesting personality
- The plot of presidential candidates exists in both dramas
- Power, mind games/manipulation, corruption is in both