Big Issue (2019)

Centered on strong female power.
WWW about 3 strong career women working with search engines;
Big Issue about 1 strong career woman being the CEO for basically a parody on korean Dispatch. XD (Tone of drama is serious thriller though)

Big issue parodies dispatch while WWW parodies Naver(Unicon)

Strong female leads in both,
Badass mind games, mature people,

Seung Hee, after losing his girlfriend in a tragic accident, left for 3 years. When he came back, he sought to make a film in a rural area. Someone caught his eye - Bok Shil, who looks exactly like his deceased girlfriend, Hye Soo. Seung Hee followed Bok Shil in order to get some answers and ended up falling for her. Still the questions remain, is he attracted to Bok Shil because of the memories of his ex-girlfriend, or does he like Bok Shil for who she is? What happens when competitors come into the picture and families opposing their love?

Both dramas deal about strong independent, cold women, that have one goal and kind of play a double edged sword. At the one hand they can ruin their company, at the other hand they can bring it to success. Both women are accompanied by males that try to help them with achieving their goals.

Lee Shin is a university student majoring in modern music. He is the vocalist of the band "The Stupid" and also plays the guitar. He is known for his good looks and his strong passion for music but is in reality a cold person who is uninterested in non-music related things and has no dreams nor plans for the future. Shin initially likes a dance professor at his university, but this all changes when he meets Lee Kyu Won. Lee Kyu Won is a bright and outgoing student who was born into a prestigious family and is majoring in traditional Korean instruments, especially the gayageum. Kyu Won's grandfather, Lee Dong Gun, is one of the top 3 traditional musicians of his age, and his biggest wish is to have his granddaughter trained to become a traditional music prodigy in 10 years' time. Trying to live up to her grandfather's expectations, Kyu Won immerses herself in training and becomes a university student who knows nothing besides traditional music. As Kyu Won's friends are fans of "The Stupid", she was forced to go to the band's concert with them. There, she saw Lee Shin performing live and is immediately captivated by him.

Both dramas take place in the media world and in both dramas there is a very similar character. While in Big Issue the female lead represents someone cold and goal oriented, Pinocchio has the same character but as the female lead's mother, who is also focused on her goals and thus makes some very immoral decisions. Both dramas focus furthermore on a male character, whose family was destroyed by the media/his job in the media world.

A behind-the-scenes look at the entertainment industry's PR teams, managers, and reporters as they scramble to clean up the messes created by their stars.

Oh Han Byul leads an entertainment agency's PR team. One of her top clients is the star Gong Tae Sung, who can do no wrong. They were in high school and college together, where he became her sworn enemy. They bicker constantly but soon develop feelings for one another.

They are both about journalist, prosecutor. The characters work together to reveal the truth to the world

The Guardians isn't about journalist or paparazzi but they have the same point, they told a story about a team who work together, very professional (hacker, cameraman, etc...).
And beside, the female character at first hates the male character very much, she wants to revenge, but then they understand each other and become friends

Sun Fan is a stunt double who dreams of becoming a big star. When he suspects Fang Zi Hao, a famous singer, trying to steal his girlfriend, he beats the living daylight out of Fang. His attack against Fang incurs the wrath of Yu You Tong, who is a die-hard Fang fan. She mobilizes the fan base to attack him online. But to her dismay, instead of ruining him, the internet makes him an overnight star as people praise his skillful fighting moves. Because of one fight, four strangers suddenly become entangled in more ways than one.

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.

Feel so similar. Cold Woman/Warm Man, Bad Woman/Good Man. The female character is beautiful, intelligent, badass but evil (but actually deep inside, she is is kindhearted just like SH in Big issues). She loves money and power, she does everything to make a girl work for her. The male lead is warm, kind. They don’t like each other (not really) but then they have to work together. Oh, I forgot, she also has a team to work with her, a bodyguard, a secretary,... I mean it is exactly the same motive with Big issue (but it’s not as good as)

When Suzuki Yori was a child, he swore that he would become a celebrity with his childhood friends Shizuku and Subaru. Later, Yori moved away and became separated from his two childhood friends. He grew up as a plain-looking guy with glasses in the countryside. However, when he found out that Shizuku had become a popular model, and Subaru a popular actor, he transferred to his friends' high school on impulse to also follow his dream. There he met Shizuku again and decided to become her manager to support her behind the scenes. However, when Shizuku was participating in a lingerie photoshoot, he helped her out and entered the entertainment world when he captivated the public as the Mysterious Boy. Adapted from the manga "Anoko no Toriko" by Shiraishi Yuki

1: fBoth drama are written by the same screenwriter '
Apart from the fact that one is build around politicians and their secrets, and the other about paparazzis and the things they discover, both dramas are extremely similar. From the character similarity of our male leads are nearly identical, both have a trauma from their past and both are at the bottom. Both meet women with a near identical character, and both women play an equal important part. although in Big Issue it is slightly more.
Definitely give the other a try if you like one of them.

Both female leads know more about the male leads than the male leads are aware.
It has so many similarities, apart from the fact that in My Mister we have someone quite broken whereas in Big Issue our female lead managed to rise form that and became someone quite strong.