Both have:

- a female police office, who tries to be a profiler.. and whose father was ones a police officer; (+ team of very.. mostly loyal, but dumb police officers)
- a male lead who has a great personality and is quite close to catch the bad guy.. or atleast closer to the police.., but is a step behind him.. Always. Family is everything to him.
-a very smart serial killer/mass murderer, whom is whether a psychopath(?!or a sociopat?!).. He takes pleasure in killing people and does it happily.. believing he will always get away.. because he is a rich CEO.. . He was created as such by his father whom abused him and/or treated him as a monster since childhood and both feared and respected him until a certain moment in which decided to battle him. Both didn't have mothers. He decieves everyone that he is a great person and persuade them to help him...

Both are fentasy dramas that involve:

- special objects that give you unusual powers, but makes you target for multiple enemies;
- actual death people that are "alive" in another world and/or act as if they are alive, while actually they aren't
- atleast two team of people fighting to win a game/rushing to a certain goal with all means.... Having their lives on the line.
- a loss of loved ones and or members of the team

A female returns to a place she used to belong for the sake of uncovering the evildoer behind the killing of her relative, but is reluctant to fell in love with the main male protagonist as he might have been involved in her case.
One of the people in it suffered from amnesia for a long period of time (years) and can't remember important clues.

The second female lead is incredibly suspicious as being the evildoer.

The female protagonist returns to the place of her relatives suicide to take revenge on the people, who took advantage of that person and pushed him towards his death. She disguises herself at the beginning. The male protagonist might be involved in her case so she is being not-so-close to him..
The real evildoer is somebody very close and somebody who had always been very helpful to her.
The second male lead is an antagonist.

Both have:

- a female protagonist with painful past;
- a male protagonist, which works against her...
- a second male lead who suffers from mental illness, but is a very kind and gentle person;.. and another one who looks just like him, but it's a psychopat.. /identical people... Both suspected of being behind a series of murders/
-a murder case, which killer isn't revealed until the very end
- the male lead always tries to protect everyone

A relative of one of the protagonists is the suspected mastermind of a killing of the other protagonist's relative. Both are beloved relatives of the protagonists and their killings and/or disappearances caused a lot of mental trauma.
A couple has to reveal a killer and deal with the concequesnces of that reveal.. as it might.. prevent it from being together.

The second male lead is a psychopath, who does a numerous of killings and is attracted to the main female protagonist.

Both have a female and a male protagonists, suffering from mental illnesses. One of the male protagonists is diagnosed with schizoprenia.

Both deal with crimes, which happened in the past and a whole bunch of people trying to find the truth.

In it there is a beautiful man, suffering from auditory hallucinations.

A person's adventure towards his/her self-healing leads towards many revelations abouts the past.. (past tragedies, incidents and killings are revealed).

The people who suffer are good and very emotional.. the blame for crimes they didn't commit triggered their mental illness.

In both the main heroine is a person who has an almost super-human strength. She saves the live of the main hero with it, but disappears soon after. He searched.. until he finds her. Both have a very adorable chemistry. Main hero is a CEO of a company. Before starting to like him the main heroine must overcome a long-lasting crush towards an old friend of her.

One of the main leads has a very deep and disturbing issue with touching. When he discover the other- he/she turns to be the only other person in the world (known to him) whom he/she could touch. They have many scenes in which one of the leads uses the other one as a shield agains the world.. but in both dramas the genders are reversed and the reason the touch is so dangerous for the person is different also.
In both the male lead is an arrogant CEO. His secretary is somebody he could always depend on (but his story is never displayed really).

They are both about a rich people whom are a small private galleries owners and the troubles their family had met (in the past) and is facing just for the sake of keeping it still running.
In both they are a lot of main, supporting or guesting characters whom display the issues of agoptive parents and adoptees sometimes have to face (in both they don't seem handled well... Atleast to a certain episodes in the beginning, but then we somehow patch things up).
In both the male hero have a pretty disturbing and terrible relationship with his blood-relatives and family, while the adopted person displays that he felt loved by his adopted parents.
Both have a lot of back-stabbing from family members issues.
In both the female lead has to deal with a lond lasted crush on another guy before she admits she is shaken by the male lead (although the chemistry between them is is displayed since episode 1).
The male lead is cold-blooded when it comes to business (or it seems so at first), but can't help it being smitten by the heroine.