Recommendations

Both young leads in the movie can sing, has unique and talented voice cord
They need the guidance and support
Both are true story.
Beautiful movies.
Unfortunate poor childhood background

Both female leads kick ass, got into police / detective
Investigation crime, lots of action, fight,
Serious movie with romance in it.
Intense thriller

Both movies involved a strong female lead that is a detective.
Two man one woman main leads.
Both are crime detective, investigation, action movies.
One has romance and more serious, the other one not

Both movie involve strong female leads and two male main leads.
Some romance.
Intense, one has some comedy the other one serious
Thriller, crime investigation, action, team work, mission

Both drama has a kick ass female detective
Both has romance
Both are intense, explosion, investigation, crime
Both leads are good looking couple

Both female lead travel back in time.
They have a lover in current time and an admirer in the past time.
Funny comedy
There is a water scene where the female lead floating in there on both

Both movies has love triangle
Both main female leads are detective.
Lots of action
Crime investigation, no dull moment

Both movie has a beautiful female detective.
Romance in both movies
Lots of action. Very intense
Strong female lead.

Both movie has a beautiful female lead that is a detective.
Intense, action movies.
One has love triangle, the other one does not
Full of action pack

Female detective on both
Intense, action, crime
Involve romance on both
Strong female lead, strong male lead as well

Nobleman Ryu's wedding is also a historical Korean BL
Nobleman Ryu's wedding also contains a ML that is a kpop idol

-Death Bell is more to the horror side but both are about death game that the studens should pass to survive.
-both are gore-thriller

IN PLOT LOVE in order to investigate the truth about the suicide by the only relative,FL had to restrain herself and pretend to be a virtuous wife, approaching her "ex-husband" ML who had not been in contact for seven years. while in LIE TO LOVE she pretends to be amnesiac for same cause.
In both shows they clear the misunderstanding later.

-both are about healing time for the members where they sleep outdoors, cook, and have fun.
-both take place outdoors in nature with the hardships of camping stuff.

The unhappy adult main lead (s) travel back to youth period, where she and they were happy, careless, energetic and having fun. It is an easy watch romantic comedy