Recommendations

Quartet surely reminds me of my another favorite : Age of Youth.
Not musically related, but this drama revolves around friendship between five college girls living under the same roof.

Each of them have their own personal problems, pasts and secrets that will be revealed one by one. Despite their different personalities, they develop a strong bond throughout the story. It is also a slice of life drama, the romance is there but it's not the main part of the story.

It's really fun, fresh, sometimes quirky and these girls are lovely as the quartet!
The Osts are surely something to look up to. Don't miss this one.

A patriotic woman disused as a male is part of a rebellious group out to remove Japanese corruption from her country out of Patriotism in both shows.
Both female leads are excellent at using a gun
Both female leads lost close family members are killed which is behind their motivation to be part of the rebel group.

Around the same time period. Features strong fighting women and focuses on patriotism. A lot of conflict between Japan and Korea.

Both has the same writer, director & even the studio is same.
Writer : Kim Eun Sook
Director : Lee Eung Bok
Studio : Studio Dragon

In both series after an accident the main girl believes she's a high school student.
Also her main interest tries to make her regain her memories.

Both star Ha Suk Jin where he is a little more aloof and seems to have very high standards. He's a little more willing to offer help in Your House Helper than he is in Drinking Solo, but he proves to have a softer side after the main character breaks him down a little.

Another period drama with a strong female lead and a similar male lead. Both plots are very addictive and the cast in both dramas are well known actors or idols.

Both have the same somber coming-of-age theme and slow paced storytelling. Both the lead tackles lost and hopes to find redemption in life. They also deal with living in what seems is a hopeless place and situation. They both find a way to scope with the help of their on screen partners. The Blue Hour is gravitating towards a creepy-horror-esque genre while 2 Cool 2 Be 4gotten is youth-centric drama.

This is a continuation of Advisor Alliance which was about how Simayi enter into politics and his relations with the Cao family i.e Cao Cao and Cao Pi. Yang Xiu was his rival then. In season 2, early on his rival was Zhuke Liang . He served under 4 emperors and the story is about his children, political rivals, family members, even his cook. The plots are intriguing and the dialogue excellent and photgraphy is fantastic like a movie and very artistic. Every episode is enjoyable and the story is also wrapped up nicely at the end. I highly recommend this show if you like history of Three Kingdoms period and also political intrigues and live storie

If you like Talking Bones, you'll like Medical Examiner Dr. Qin and vice versa. Similar context and content.

If we're talking about "Genius" this would fit the category. He's medical examiner who specializes in rare diseases. He assists with crime cases suspected of involving perpetrators with rare conditions, and offers plenty of unique medical insight while teaching viewers a thing or two about a few rare diseases.

The main lead is thousand years old and the girl is young and naive.
Nonhumans live among people.
Same comedy feel, funny bromances.

Both characters want an outlet from their worries and problems so they went to a remote place. They are both angry to the important people in their lives. They want to getaway from reality.

Similar plot of haunted women who goes a lil bit crazy and both were intended to be "horror" movies, but since Koreans simply can't make horror, they ended up being good thrillers.

Both fathers of the main lead was sentenced to prison for the crime that they did not do and being threatened to admit to the charges with the safety of their child. They are both not able to defend well for themselves due to one having Alzheimer's Disease and the other being intellectually disabled.