Interesting, I liked it (some spoilers..)

I don't think its for everyone but I enjoyed it. The camerawork was curious to me, someone else already mentioned it I think. I don't know what style its related to, when a scene starts the camera seems to have primary focus on an secondary area/charaters. Its hard to articulate..
Very strong cast, if you know some about korean customs and culture I think you can definitely appreciate the film a bit more.