I've seen a lot of Bong Joon-ho work, and I would like to learn more about korean culture, but I hate korean soaps, so I'm looking for movies and series not-so-melodramatic
Steel Rain is an excellent Korean action film, about a new Korean war nearly starting. It has a second story, Steel Rain 2, but it's a completely different story line. Haven't watched it yet.
There's also Tae Guk Gi, in English, The Brotherhood of War.
Park Chan Wook - Oldboy, Thirst, Sympathy for Mr. Vengeance
Na Hong Jin - Chaser, The Wailing
Lee Chang Dong - Peppermint Candy, Burning, Secret Sunshine
Kim Jee Woon - I Saw the Devil, Tale of Two Sisters