Recommendations

Similarities:-
- Leads hard working towards their dreams.
- Bickering couple.
- FL always sorrounded by a bunch of boys who support her.
- FL in a male dominated field.
- Cohabitation
- Both have sweet love stories.

Differences:-
- MUG has a cross dressing plot while FIYS doesn't.
- MUG is set in university while FIYS is set after graduation.
- MUG is a physical sport related while FIYS is e-sport related.

IF YOU LIKED MY UNICORN GIRL YOU'RE GONNA LOVE FALLING INTO YOUR SMILE

It is a cute romance of the two male leads... and them finding out their true feeling and accepting one another

-Both Office Romance
-ML's are both cold towards FL but secretly protect her
-Funny office staff side Characters
-Both ML's are landlords to FL's
-Cute ROM-COM
-Both dramas main couple has to work closely together
-FL'S have similar personalities
-enemies to lovers
-height difference

They both have deep story where main lead has to lie or be quiet to conceal the truth. Both stories are so touching that you will cry but still you will find happy ending.

monarchy of Korea is shown
parallel universes -monarchy actually doesn't exist now in korea
wars
forbidden romance
second male lead is the bodyguard

3rd season of the show. Different characters in a similar, yet different scenario. Episodes are short and sweet. Definitely worth it to watch.

Between Friendship and Love 3 is obviously the third season of the show. The episodes are short and sweet, but still convey the story well. Again, different characters but similar stories. Two people who live far from one another.

Second season of the show. They have different characters, but kinda similar scenarios? The first one is about two people who work together and live far apart, the second one is about friends who live far apart.

- Both are rom-com centered.
- Both have Boss-Employee romance set-up.
- MLs have similar personality.
- I won't say FLs are similar but both seems very dedicated towards the work they've assigned.

Similarities :
+ Strong female leads
+ Female centered plot
+ Thriller
+ Drama
+ Mystery
+ Death
+ Infidelity
+ Hidden past
+ High society
+ Power struggle
If you're looking for a shorter --dare I say better-- version of Penthouse, Mine is a great option.

entirely different plots, but the main couple is the same actors and their chemistry is really good

It is about work life plus both the leads ( jang geu rae and ji an) are contract workers. The characters are relatable. Both of them are slice of life but Misaeng: incomplete life is a bit more serious than not alright but it's alright.

-part of the same series
-part 3 is a continuation to part 1
-same character from the first movie
-demon movie

-part of the same series.
-same character from the first movie
-there is a continuation scene in the second movie
-more demons to see

-Whoever is watching Nevertheless for Han So-Hee, must check out WWDS. The FL (Hamabe Minami) is quite literally her twin from Japan. They are also pretty-much styled with the same haircut. The characterizations of the two young-women land similar too.
-Those who are a fan of the 'cinematic' camera language of Nevertheless, must check out WWDS. Very eerie shots, creepy & uncomfortable close-ups of faces. Both actresses have plenty of close-up angles of their eyes (as they engage in mental-gymnastics). Those scenes are pretty inter-changeable imo.
-There is an air of 'nostalgia' to the cinematography. Very deliberate color-grading.
-There is a lot 'name' significance and history around the name of the leading ladies. Nabi= butterflies. Sakura= cherry blossom flowers.
-Infact, the first point of attraction for the boys towards their leading-ladies, IS the significance of their respective names. Jae-Eon loves his butterflies, and Tsubaki loves his sakuras.
-While Jae-Eon and Na-bi are art-school majors, Tsubaki & Sakura are traditional sweet-makers. You'll see beautiful hands, make beautiful works of art. <3
-Really messed-up dynamics between the leading-couple. The attraction and forbidden sexual-tension is the driving-force between the two couples.
-They look stunning together, but are SO wrong for each other. Unless the 4 of them can heal from their respective emotional traumas.
-The leads are the same age (young 20-somethings) making really questionable choices in life.
-Both the stories are told from the PoV of our protagonist-ladies. While intentions of both their male-counterparts are kept ambiguous. You will question the MLs till the very end, right along with our lovely heroines.
-Intriguing MONOLOGUES.
-'Psychological' angle of both the stories are milked HARD.
-Low-key workplace/ industry sexism & double-standards by the truckload.
-Both girls seem to suffer from some emotional-trauma/ blockage that prevents them from being the best artists that they actually have the potential to be.
-Both stories are based on illustrated originals: Nevertheless from a webtoon & WWDS from a manga.