Psychopath Diary (2019)

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

A guy with a temporary amnesia has to endure it all .. due to believing that he is a vicious killer. Both has to deal with false accusations of a murder.. and the battle between the protagonist and the antagonist it's just intriguing.

Gives similar vibes
Similarity -> in both the emoplyees try to find evidence against their boss who might be /is a serial killer ....

For a good balance between comedy and crime/suspense that is maintained well throughout the entire series.

Really similar comedy style with the dark aspect of a serial killer character. Would highly recommend for people who love dark horror films but want a bit of a laugh and relax.

Ever since the first episode of Flex X Cop I can't stop thinking it has the same vibes as Psychopath Diary.
Both dramas are mystery dramas with a good dose of humor. Both male leads are not typical cops. In Flex X Cop the male lead is a seemingly carefree chaebol who is appointed as a police officer without undergoing proper training, while in Psychopath Diary the male lead is a civilian who (accidentally) helps the police find a serial killer. Both ML are smart (although in PD we see the ML wit only in the last few episodes). Both FL are strong and independent and both of them have a police officer father who had been involved in a difficult situation during their work (in FXC the FL father was wrongfully accused for bribery while in PD FL father had an accident that left him mentally challenged during investigating a case). Furthermore, the soundtracks of both dramas are delightful.

Both are thrillers, with murder being the main point of the plot. The protagonists are both sensitive and naive, living a normal life until they get caught up in messy situations that both revolve around the same obstacle: Memory loss

Both dramas have a
- male lead considered as losers by those around him
- female lead who is a police officer
- ML and FL work together at solving cases in an unconventional way

What happens if a common man accidentally finds a serial killer’s diary? Yook Dong-sik (Yoon), on losing his job, tries to end his life. However, in doing so, he somehow stumbles upon a crime scene. While fleeing the murderer, he is hit and finds the culprit’s diary in his possession. Unable to remember the events before the incident, Yook begins to believe that he is a serial killer, but the real culprit is hiding and hunting for his diary.

In both series a underdog like main character has encounters with psychopaths/murders and their influence changes his nice and quiet personality to something more scarier

-Both have a seriall killer and from the beginning we know who that is
-Both are Black comedy
-Both main leads define themselves as a killer

While watching Inspector Koo, it just reminded me of Psychopath Diary.

Both shows are comedy suspense, in Psychopath Diary a man must solve his own mysteries just like in Catch the Ghost, where a girl is trying to solve her own mystery. Both shows will send chills down your spine as well as making you laugh really hard. I highly suggest both if you enjoy crime-comedy types of dramas.

Comedy version of "i think I'm a psychopath killer"
While waiting for the serious genre, let's watch & have fun with yoonsiyoon/donggu drama. You won't regret it

They have serial killers and psychopath diary have thriller and mystery also.

The 2 psychopaths in both movie and series are so unique and the story are intense

It's a VERY tentative suggestion, but both dramas rely quite a bit on dark humour which I've up till now found quite rarely in Korean dramas.
The plotlines though are completely different.

I Picked up a Star on the Road is about a young woman accidentally hitting a famous actor (while trying to take revenge on her boss) and thinking she has killed him. This makes her take his body home to find a way to dispose of it...but the actor is still alive and the 'attempted murder' turns into a kidnapping.
Sadly, IPSR turns into a more classic rom-com after episode 5, but till then it's a very funny and unconventional (for Korean standards) dark comedy.

Psychopath Diary is about a mid-30s man who's a timid pushover losing his memory and coming to believe he's actually a cold-blooded serial killer.
Psychopath Diary has no romance (barely some minimum elements), but the humour is more consistent than in IPSR and I generally found it a superior drama overall.