Recommendations

Both dramas are about news stories.
Argon focused on the workplace & politics in a news station and anchors,

TimeLine is more focused around the news stories themselves, and features REAL news stories and not fictional ones.

Both are workplace dramas about journalism, Argon about a news station and Big Issue about magazine journalists.
No romance in either, both centered around the boss-employee relationship between male & female lead.

they're both have gender bender,mystery, historical, romance as genre.
Both have cute in moments .

Both dramas are about a police agency dedicated to crimes committed by non-humans who coexist alongside people on Earth without them noticing.

Both Hitsudan Hostess and I Just Wanna Hug You (aka Dakishimetai - Shinjitsu no Monogatari) are centered around a female main character with a disability, in both cases played by Kitagawa Keiko

Both Hitsudan Hostess and Kimi no Te ga Sasayaite Iru are centered around a deaf female as the main character

in a nutshell: Good looking men with feline characteristics

how are they different?
-drama vs. webtoon,
-length which translates to character development
-episodic as opposed to MLP with one unifying plot and fuller story
-appearance of cat characteristics...in MLP they only appear when the ML is emotionally agitated, they dissipate when he is happy

both dramas are about shopping addict people
both main leads are from rich family
their lives changes ovenight and they must make money on their own

This drama is something which I was searching for a long time, I still remember watching how to buy a friend and truly loved the drama...
I was hoping something similar drama must come in kdrama world and with this drama my dream came true..
For a long time i thought there were no good high school dramas airing.. after class of lies
Now I can not sleep at night ...
This drama story is keeping me up till late night
How could everything be perfect similar feelings that I felt when I was watching how to buy a friend
The actors , direction, story ,cinematography , ost ,and the atmosphere...
Love it.. just like how to buy a friend

Both mysterious and thrilling.
Both have a way of changing the future, where in 'Signal' is through communicating in to the past through a walky talky, and '365: repeat the year' is by going back exactly one year.
There are also detectives as leads in both shows.

Although it's not a school drama, the leads in these dramas are super similiar. They both have to do illegal things to earn money, they have no parents in their life/ have a parent who treats them horribly, they have to keep secrets from the people around them, and they are both really smart. Both of these dramas have dark undertones and smart female characters

Just based on the synopsis: both begin in the modern world where a female writer is writing a historical love triangle for work. In both, neither writer intends for the female in their story to live long, but as the writer gets deeper and more connected to the story, she has to find ways to stay alive in the world she has created.

(Rule the World is a great option while waiting for the release of Romance of Tiger Rose)

Both based on the same novel, both entertained the possibility of historical Korean painter Shin Yun Bok as a woman pretending to be a man because her paintings mainly depict women. The two stories interpret the story of Shin Yun Bok being a real woman quite differently, but the similarity in both shows is that the historical character Kim Hong Do(who was a fellow painter of Shin Yun Bok in Joseon era) is her teacher and is also one of the 2 characters who fell in love with her. Both shows depict Shin Yun Bok's life as a woman loved by 2 very different people while living her life as a painter.

Both are Joseon period dramas about a woman's struggles to become a great artist. I really love both dramas because both plots explain the characters very well through the use of their art forms. Both dramas also feature a beautiful and talented gisaeng played by two great actresses (though the gisaeng in Painter of the Wind is NOT the lead female). A scene I find quite similar in both dramas is both feature a scene wherein the gisaeng is playing the gayageum instrument while her lover (in Painter of the Wind, this lover is the female lead) is painting as the lover listens to her music.

Both depicts a story of a woman who was born a noble yet circumstances in her life led her to be linked with a much older man (an official who owns her as a gisaeng in Hwang Jin Yi, a professional painter who became her trainer in Portrait of a Beauty). Both women are very talented, either as a poet or as a painter. Both older men are very much attracted to the young woman linked to them. Despite the older men's attraction, both young women fell in love with a man closer to their age who basically has a low position in Joseon's class based hierarchy. The love triangle in both these shows are then lead to chaos on the three main characters' lives until the ending.