Recommendations

In both dramas we follow the lead protagonist as he get's hired in a big company. It's interesting because we get a glimpse of how a Korean company works (conformism, hierarchy...)
While Jang Geu Rae is not qualified for the job ang introverted, Chief Kim is talented and extraverted.

Both shows involve protecting/saving a kid and "pull at your heartstrings". It's rare for me to find shows like these but I really enjoyed both and there was a lot of suspense and twists in both.

In each drama, the lead heroine is desperatly seeking a husband.

Hilarious, heart warming, and so very relatable. These two dramas share the same breezy and comedic tone, and both dramas experiment and play around with a fresh format with which to tell their story. Reply 1997 perhaps feels a bit more familiar compared to your standard kdrama, while The Lover feels more like a sketch comedy show- think SNL, only more cohesive and consisting of more genres than just comedy. Both aired on less popular networks, both of these dramas have a similar and unique way of carving their way into your heart. (They also both feature gay character(s), which is definitely a notable feature for Korean shows!)

Both dramas centers on socially awkward characters and their desire for a domestic life.

Both dramas centers on marriage and the heroine's desire of domesticity.

They both have: smart female protagonists who dress up as men in the beginning of the story; intricate planning and court intrigue as they battle their way to the top; multiple love interests; etc.
Empress Ki is a much better fighter than Queen Seon Duk as an individual, but Seon Duk was up against a more intelligent foe and had some brilliant planning.

The protagonists of both dramas have somewhat of the same feeling. The drama has to do with crime and investigating. Both protagonists goes out into the field, even though they are not meant to be. For both protagonists, there is a "sidekick", a female character that helps them and is "used" to help solve the cases they are doing. The Female characters dislike the protagonist at first but ends up warming up to them near the end. The dramas both have somewhat of the same plot. If you like one, I recommend watching the other as well.

Both involve friendship and romance among a group of friends in the 1990s. Both with the theme of youth and things they learnt in the process of growing up (e.g. What they lost or gained while growing up, the responsibilities they will have to take up upon turning into an adult)

Both are life dramas focusing on aviation. Both focus on character growth and romance is not the center of the story.

Both are about a group of not very similar girls, who develop a friendship. There is a lot of mysteries surrounding one of the girls in both shows. Both are funny and dark at the same time and cover controversial topics. I believe you'll like Seonam if you like AOY and the other way around.

- both have a smart female lead
- both male lead are prince who became king
- both male lead in this dramas, only love one person (stick to one)

Both dramas are about a mermaid/merman and human falling in love.

In both dramas the main male and female meet at a school program. And both the male lead is very famous in the school.

Both involve the process of friendship developing into romance. One of them used to have a secret crush on the other in the past and yet did not manage to work it out.