Recommendations

Both are light fluffy dramas where friends become lovers. They both gave me a same feeling while watching.
Both couples are bickering couples and they joke a lot with each other. The chemistry is so good in both.
In both the Female Lead is first in love with someone else.
We have an Second Female Lead that loves the Male Lead but he doesn´t love her back.

Both show depicts How serial killer father destroying their children lives.
And also in both shows female lead becomes a important role in male lead life to live as a normal person instead of turning into killer.

In flower of evil the adults characters acting were depicted extraordinary by the male and female lead than come and hug me. In case of teenage characters the acting of male lead is extraordinary in come and hug me.

Both are about a family of criminals. The main difference is that family members in Shoplifters really care about each other, while the parents in Boy just straight up use their son for their own benefit.

Completely different genres as one is based on a crime, one is sci-fi but..
Both romance
Both explores acceptance, embracement and loneliness.
FOE - male is lonely and female comforts
MHL - both lonely and comfort each other
Both have traumas.
Both have a nice and cold guy within one person/face
FOE - male's facade (who he wants to show)
MHL - man and robot (who he wants to be)

This drama is too similar to the legend of the phoenix, it's just that the stories are a little bit different. Although the marrying to the emperor to save the love of their life, and then being rude to them is the same. If you like dramas like this then this is for you! But sorry, just not my cup of tea. If you enjoyed Legend Of The Phoenix, this one is for you!

The dramas are set in different time period but
Similarity
-> Same female lead (Sabrina Chen)
-> Both female leads cross dressed in the drama to enter a place where women are not allowed
-> Both male leads knew from start that female lead is a woman and they try to protect their identity and live with the female lead in same space
-> Both male leads have problem in the eyes which gets cured later in the dramas

stone-faced male lead
historical
romance


This is a drama that you can re-watch.
After watching the epilogue I must concur with other viewers that Zheng Ye Cheng raised the bar for the role of General(XY). His chemistry with Hu Yi Xuan (CY)is well portrayed in many heart wrenching scenes.CY is witty, adorable and trusting which touched XY’s cold heart.

Historical fiction
Romance

The empress dowager of Tianning forces Yunxi to be a spy for her in exchange for Yunxi’s mother, who disappeared years ago. Circumstances allow her to show off her skills time and again, winning the admiration of Long Feiye. The two slowly develop feelings for each other. At the same time, she also forms a friendship with Gu Qishao, who is going against Long Feiye.

They have very different plots but both have unique plot-twisters that will keep you on the edge of your seat and deal with dark themes/suspense/thrill. Horizon Tower has more mystery while Bad Kids has a unreliable narrator that requires the viewers to read-between-the-scenes to find the real truth.

They are similar because both FL know how to fight. Also, from one of Yang Mi's posters, she's in a similar position to Zhao Liying because she is also holding a bow and arrow in shooting position.

Both are zombie movies, both have two leads fighting to stay alive together, both are emotionally moving. Both are set in a closed environment, Alive is set in an apartment building while Train to Busan in a train.

They have the same writers. They main character is also a twin in both dramas. There is a prophecy about the twin characters in the drama that is important to the plot. They also both have complex characters, meaning likeable villains, protagonists with a dark side, and characters which we won't understand at first if they're good or evil

Both are music dramas. Beethoven Virus was my first Korean drama, which display perfect Music Industry, love, friendship and struggles between 3 leads in an orchestra. DYLB also gives me similar vibes.

-bickering couple
-arranged marriage
-great chemistry between leads
Both shows give off a similar vibe where the stakes aren't too high but the romance is strong!

The similarities are
rich famous male lead
Hate to love relationship
Tsundere personality of male lead
A Scene where leads are lost in a snowy place