Recommendations

Both of these talk about the political process of Korea, the presidency and “communism” of anyone who dared to disagree and the fight for freedom

Both are set around the same times of late 50s and early 60s
uncle samsik is more political and chief detective was more crime
But both also have solid acting and aesthetic qualities

Its like a Squid game for me because they are given challenges forcsake of the prize moneý. Theycare willing to do anything no matter lf they hurt themselves or others. It like a squid game vibe with a horrible twist. You will never know wheb it going to end as the time keeps on adding as you show you potentials good or bad.

Both 'Smile to Life' and 'Sunshine of My Life' have love triangles! The second male lead and the main guy who used to best friends in each drama have a falling out, which makes things even more complicated when they both fall for the same girl.

Both dramas have a limited set of characters and the mystery plays out within an enclosed space. The themes are somewhat similar, exploring if a monster can be created in the right circumstances. White Christmas is more introspective and less violent as opposed to Strangers from Hell. Both are an example of brilliantly directed dramas, and anyone into thriller/mystery would appreciate them.

Ryu Sun Jae's sunbae and role model is Ahn Min Hyuk.
Both male leads are the sweetest, simpiest and total loser for their ladies

Both have a focus on the theme of prestigious schools, social hierarchy, and the impact one individual can have on a well-established system.

With this premise, this parallels with Bitch X Rich (2023) in terms of exploring power dynamics, secrets, and the clash between different social circles. Both are approached with a character who is a transferee that does not belong to the same high social class of students in the elite school as the transferee, defy the odds and going against the hierarchical system that already exists within the school.

Both have as main theme: time travel, from adult nack to highschool period. In both series, the female lead tries to change the outcome of the future. In both series mail lead attitude is initially cold towards fenale lead and along the way the female lead uncovers the true love feeling of the mail lead since the beginning.

Female leads are similar, 120 episodes or more, Male leads are similar, Second Female leads are similar

If you are a Lai Kuan-lin fan, then you do not need to know about the similarities between these two dramas, presence of him as ML is enough.
But talking about the similarities,
* both the dramas are high school and then college plus career later oriented.
* in both the dramas ML is caring towards the FL, however clumsy or however the FL goes bossing around him.

Why?
If you have already seen the series, you'll be just saying ... it's a cycle
For those that haven't ... we have the perfect cocktail:
one night stand
+
denial phase from one of the ML's
+
increase of dumbness + maniac girlfriend
=
?

I agree Misty is not as dark and as toxic as drama Somebody, but certainly there is elements of similarities between the two dramas.
Take for that matter -
* The Obsessive nature of one of the lead,
*And yes of course the Mature theme these two dramas having.

It's like the movie, the difference FL instead of ML in the movie.

Han Se Gye is a top actress, also known as a troublemaker, with many rumors around her. To others, her life appears as a mystery, when in fact she is faced with a strange occurrence where she must change into a different body and new identity for one week a month. She encounters Seo Do Jae, a brilliant man who is an executive at an airline company. He seems to have it all: a perfect appearance, knowledge, and a good job; but he has a secret too. He suffers from Prosopagnosia, the inability to recognize faces. However, he manages to hide this from the world, every day he makes an effort to remember people by their personalities.

Both involve a commoner and a royal of opposite genders switching bodies and then being forced to navigate each other's lives, bickering and trying to swap back.

Both are historical mini dramas in which a royal lead swaps with a commoner/bandit lead, resulting in them having to navigate each other's lives all the while bickering.