Recommendations

Both of these movies are about childhood friends who separate due to some incident that happened in the past and who meet again after they become adult. If you liked watching C'est si bon, you will also like Unforgettable, as they have similar vibes.

Both of these movies are about teenage friends who meet after long time when they become adults. Though C'est si Bon is more about music whereas Sunny is about school life, but you will enjoy them if you like movies with retro vibe.

Beautiful secretive loner FL meets aloof handsome ML, cute friends, FL learns to be more outgoing and open.

-Outlaws
-Gun Fight
-Revenge
-Western Vibes
-Robbery

-Gun Battles
-Western
-Revenge

Both of them are melodramas and The fl and ml both knew each other before they were lovers. The fl's both have a younger brother.

Similar backstory with all the tomb raiding.
Fun fact, the author of The Lost Tomb novels started it as a fanfiction based on Candle in the Tomb series.

Both dramas deal about girls that are getting bullied and have something happen to them because of this. In both dramas family members take revenge and things become very fast very extreme.

Both of these are time travel and includes Scifi and there is no romance. Both dramas include action. Of course, they are definitely both really interesting!

Both are critically acclaimed thriller movies by Bong Joon Ho and Song Kang Ho plays a main character in both.

Both are thriller movies by Bong Joon Ho that show violent detectives that are abusive during interrigation, feature a character with a disability (in Mother its the mc and in Memories of Murder a side character) who is accused of being the murderer of (a) girl(s). They leave you guessing till the end.

Group of youngsters get together in order to solve mysteries. In YB they are 6 while in MH have 5. Adventurous series in costume that worth watching. Satisfactory romance in both. Young Blood's end is open, though .
Stong, wise and competent female leads

Both series involve 2 male leads who try and save a bankrupt/corrupt company,

The biggest difference would be that in Chief Kim, the male leads go from enemies to friends while in A2A, they remain friends all throughout. Chief Kim also has a more comedic tone while A2A is straight business and finance.

Both have a great story about business and finance, as well as a good bromance.

My first first love 2 is the sequel and also the continuation of the the Kdrama My First First Love. If you enjoyed watching this drama then you will also like to know what is going to happen in its next sequel.

They're very similar
1. Both ML are Vengeful towards the FL because of Misunderstanding.
2. The Plot is very similar the difference only in Kluen Cheewit Sathit's Lover Died but in Lhong Ngao Jun Thanakim's Friend Died.
3. Both ML's have many similarities in terms of personality
You will feel like you're watching only the same Drama