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.
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.
-Stars Han Hyo Joo
- both takes place in a different time in the past
- both have a focus on music and culture at the time
- both have a romance at the center