Recommendations

It is gender bender. As is you're beautiful female lead disguises herself as male

Both very good mystery dramas with great acting. Suspense is also good. The mystery is entertaining and they both leave you off of your seat thinking about what's going to happen in the next episode. Both also have strong female leads!

Same feels. Both about crimes, but Voice is a bit more realistic (no element of magic or time-traveling). Also, both use the same font.

Both of these dramas have similar main characters, fake relationship and contain funny scenes.

Based on the same Manga.But the story follows only the basic outline of the manga and all the other things are messed up like character development, emotions ect.In my view if you love the Japanese drama then you are going to hate this film.

Based on the same Manga.First adoption of the Manga,, but the ending differs from the Manga as the Manga was on going at that time.

The Lost Tomb, The Mystic Nine and this one is all base on the same novel series.

It is base on the same novel series. I would recommend watching Mystic Nine first.

Mystic Nine is the prequel on the same novel series. It is also very very good.

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.