Healer (2014)

same vibes and the story is about the male lade that was a secret agent.

Gu Family Book is very touching like Healer although it is a historical drama. Perfect line up to Healer. Great OST especially the beginning story and first OST - My Eden will cure your Healer hangover!!!

-Both MLs sort of want to avenge their dads, and they are both very successful in what they do.
-Intergenerational feud between a 'youngster' and a hateful, rich-old man.
-Revenge plot runs for years.
-Both MLs eventually team-up and find strength in their better halves.
-Both stories are modern-day versions of court-politics, where the wronged protagonist takes down the powerful bad guy, although IC plays into business-level politics with far greater number of players involved.
-The revenge is fulfilled at the very end, with the comeuppance being extremely satisfactory.

The ML hides himself from the FL while interacting with her on a regular basis and saves her from the baddies, while she doesn't know his real identity
The ML uses his tech savviness and his hacking prowess to outsmart the baddies; like Healer he's good at avoiding CCTVs and hiding from people
The main villain has an overarching purpose to cause harm to society as a whole (like in Healer)
The leads knew each other as kids, and their connection is very significant to the main plot, i.e. the past very much affects the present

They both have badass male protagonists who fall in love while on a mission. The female protagonists are strong-willed and likable. Yong Pal has less action and more melo, but they're both amazing.

The action scenes, the mystery, the actors, the writing, and the character development. All excellent. It's a roller coaster ride of emotions.

-Both ML are protecting someone
-Both ML and FL lost someone important to them
-Both ML are fighting for justice (in their own way)
ML = Male Lead
FL = Female Lead

In both shows:
> The ML has a secret identity and meets the FL under false pretenses.
> There's a past connection between the leads.
> The ML is a prominent fighter and wants to keep the FL safe.
> The FL is actively involved in finding out the truth about the case at hand.

In both the male lead is physically very fit and a good fighter and with his skills he rescues the female lead from danger. He watches over her and she feels protected because he is there for her. The antagonists in both are scheming politicians, so the male and female leads are helping the good side to win.

In both kill it and healer, the main character fights alone and works with only few other people. Both main characters have unfortunate pasts. Healer is more comedic than kill it.

Lawless Attorney (Lawless Lawyer) features the same kind of hero, strong and protective who watches out for the FL even though she is strong in her own right and can take care of herself. The ML would prefer to settle things with the law, but he's got no problem using his fists if he has to.

This might seem a bit wack, but bear with me.

Both CT and Healer seamlessly combine many genres (CT is more mystery/rom-com/supernatural with some historical/political while Healer is more action/thriller/mystery/rom-com with a bit of political). I think that's something a lot of dramas fail to do well and possibly by that alone you might be drawn to one or the other. Both have solid storylines and characters, though CT is better in terms of deeper meaning and has a lot of things to analyze in the backgrounds of each scene. The mystery/suspense element in both is pretty strong and hooks you pretty well. The romance in both is wholesome and solid, and great OSTs (especially CT's).

CT is criminally underrated and Healer might be (slightly) overrated (though it's def a bunch of good fun), and despite the two seeming completely different, I think viewers of one will probably like the other. Vibes, maybe? Don't think too much and just watch :)

The similarity of reporters dealing with conspiracy. What is more, Ji Chang Wook appears in this drama too.

Although the settings are completely different, both shows have a masked 'hero' type, that is all about 'justice'. And the female lead starts to help the Hero and they fall in love in the process. Another comparison is that they have something in their past that links them to each other, even though its a trope we have seen in almost every drama.

The ML is a strong fighter who is sent to spy on the FL. The ML goes undercover to get close to the FL in a role where he is under the FL's authority. When the FL issues commands, the ML generally obeys and plays the role of a subordinate. The ML also becomes the FL's protector and saves the FL from harm on several occasions, even when it means risking his own life. And the ML does not let injury or illness get in the way of... intimacy.

One further parallel that is minor but amusing: the man who at first seems to be the ML's main romantic rival is later shown to have more romantic interest in a family member of the FL.