Recommendations

Both female leads seam reluctant to get involved with male leads ,Both female lead are more dedicated to their jobs than romance, and both male leads are the aggressor in the relationships.

The storyline is different, there are more "fantasy" elements in Love O'Clock. BUT its similar vibes:
- they are both super fluffy
- FL is bubbly and more flexible/"lazy" and creative (and talented), while ML is very particular and talented
- there is co-habitation in LO and they are neighbors in SS
- they develop feelings quite fast but they become official quite slow
- something else brings them together (LO is a clock, SS is ice cream); the FL has something the ML wants

It's kind of similar, the female lead in LUTFM is technically from another world meanwhile, in OMDL the female lead entered her book and the male leads both have hidden identities and also search for the people who caused misfortune for their families

Both of these revolves about the loves of daughters of gangsters. Though "The Gangster's daughter" is a movie but "Triad Princess" is a Netflix series.

Hope you like it!

Other than sharing Lee Sang Yi in both shows, both shows focus on the people's relationships.

Natural, easy going, not much dramatic filled moments.

Slice of life dramas with romance, and filled with colorful supporting cast.

Both share cold and aloof female leads, who both share trauma that makes them that way. Both take a while to thaw out their pain to be happier in the end.

Japanese Version, so same storyline for sure.
- RomCom
- Hidden Identity
- Quirky FL Personality
- 2ML is awesome

This one IS my favorite version of this drama. Short, fun, and adorable actors!

Chinese Version, so same storyline for sure.
- RomCom
- Hidden Identity
- Quirky FL Personality
- 2ML Syndrome

This one is not my favorite version, but it is okay :)

Korean Parent Story, so same storyline for sure.
- RomCom
- Hidden Identity
- Quirky FL Personality
- 2ML Syndrome

This one is not my favorite version, but it is okay :)

In both movies the protagonist has the special ability to "see death" and in some cases try to save people.

*both have medical related
if you are a fan of medical then you should defi watch this. it's a lowkey drama with romance

In both the dramas, Female chases male first and it has similar vibes at many places. Even the posters look similar.

Similar vibes

BOTH:
man and girl/kid form a heroic relationship
man is hero
girl/kid becomes damsel in distress
action packed
genres: action. thriller, crime
very strong male lead
male leads are avenging the death of someone close to them

DIFFERENT:
avenge death of his family in Revenger
avenge death of the little girl's family

both prodigy doctors. specific surgeries that can`t be done by just anyone. both have a lost love that they meet again and get the chance to clear the air with that lost love. both have a rivalry with one of the doctors that they meet at the hospital they go to.

Movies by Wong Kar Wai about different sets of people with romantic tension (eventhough it stays unfullfilled alot of the times) that overlap. Theres also action scenes in both.

The mine drama revolves around the murder of a man {Hanji young} and he's proved as major antagonist with a trail of lies and evil deeds behind the fake identity of being a good husband and responsible father. In High class drama we put up with similar situation but the only difference between them is the truth was revealed before death in Mine whereas , the wife explores the miser of truth after her husbands death in high class.
Both dramas spins around the supreme wealthy class with a mask of smiles burdened with endless sins and evil within.
Yet it isn't proved in High class though protagonist's husband had an affair and even in Mine the han ji young had secret affair.
Both dramas had sons with malicious father with a history of misdeeds behind them.

I hope the explanation may fulfil the requirment.