Recommendations

Just for the new generations to learn about some classics.
The two lead women are career women evolving in high pressure office and facing a failed relationship. New young men change their plans.

Two recent nunna romances setting place in Seoul. Two young men that have admiration and respect for their female superior decide to pursue unexpected romances.

2 stories about younger men that are very motivated to seduce and charm older women.
Nonetheless these two differ as When Camelia blooms features a single mother in a small town but Nine to Six has career woman in Seoul. The first one a murder investigation as a secondary plot when Nine to Six is a business secondary plot.
Those dramas features some of the most famous and popular lead actresses in Korean dramas.

-two college students, unwillingly turned partners.
-introverted FL × quiet-but-not-an-introvert ML.
-academic weapons. both of them.
-mutual growth? absolutely. they're each other's biggest catalysts.
-same soft, understated romance and complementary couple dynamics.
-THE AESTHETICS. the cinematography, colour palette, the whole visual language.

They have nothing in common but a fated encounter brings together successful established 30 year old women with young and inexperienced men.

Two dramas that cover the famous trope nunna romance. In both stories we have women well-established in their career that start unexpectedly dating a younger man.

The two stories share common starting point. Two women in their 30s thinking they have their lives figured out and realizing that other unexpected avenues might be better suited to them. They both open their eyes, break up with bad boyfriends and try new things. Throughout the drama they develop a romance with a younger man, they learn to set boundaries and live their own lives without following their mother’s expectations.

Both shows are based around the entertainment industry. They both have a newcomer (ish) in my stand-in where they get taught the ways and fall for the person who is more known in the industry.
If you liked one you might like the other.

Both are mystery series which use the exact same supernatural hearing sense of a human lie detectors who work as a detective's assistants. Both series explore the psychological toll of knowing when people are lying. They're both brilliant mystery series about lonely characters with supernatural hearing, finding someone who they can trust .

Cuz the setting is similar in college life. The problem too. Getting same group with classmate who didnt work together, competing for GPA, problem with friends etc

Same director, same narrative concept, but about ~15 years apart. A father and daughter duo struggling with the expectation that daughters must marry out, even if neither party wants her to do so. Late Spring has a stronger focus on the daughter, whereas An Autumn Afternoon focuses more on the father.

Both are based on the same real-life story, about two seriously ill people who entered into a marriage arrangement.

If you loved "Love in Disguise" , you really need to give "Bromance" a try because the two dramas have so many similarities. Both have a badass FML who can absolutely throw hands, a female lead disguising herself as a man, and that whole “wait… why am I starting to catch feelings for someone I think is a guy?” situation. You’ve got the protective ML, chaotic situations, secret identities, hilarious misunderstandings, and that slow-burn chemistry that makes you want to scream at the screen. Obviously, the stories aren’t exactly the same, but if you enjoyed the gender disguise, badass FML n chaotic romance vibe, Bromance definitely gives you that same feeling.

Female lead from present day body swaps with a girl from/in the past. She must then live as her, but her futuristic/different way of speaking and chaotic behaviour makes her stand out.
Ensemble cast.
Occasional flashbacks show both female lead's knowledge of the time period she's now in, as well as her former relationships.
Female lead meets someone in the past who looks identical to her best friend in the future.

Lin yi is very similar to Li Jinyu in this drama, from the black puzzle to the house, etc. They both suffer from emotional trauma and the girl is the light.