I don't know exactly where to start. What I do know, is that the movie is incredible! Korean cinema has brought a lot of talent forward and they have made some incredible movies over the last 10-20 years. This just continues in that same line. Don't get me wrong, not every movie from Korea is phenomenal. But this one (that will clearly get a US remake sometime soon) has to be in the category of the great ones.
I don't want to spoil too much (the title does give you a hint, where this movie is taking you), but you will get more than just a question about morality here. There's also entertainment and suspense and a subplot that works pretty well. You might not understand some character motivations while watching it, but you will get it eventually.
I guess there is only one minor thing that you might be able to complain about. It's the fact that the movie could have ended a bit earlier. It seems that they "stretched" the ending. I still liked it, but I can see why people would have wanted it to end 10-15 minutes earlier, when "all is said and done" (though as it turns out, not everything had been done)
I don't want to spoil too much (the title does give you a hint, where this movie is taking you), but you will get more than just a question about morality here. There's also entertainment and suspense and a subplot that works pretty well. You might not understand some character motivations while watching it, but you will get it eventually.
I guess there is only one minor thing that you might be able to complain about. It's the fact that the movie could have ended a bit earlier. It seems that they "stretched" the ending. I still liked it, but I can see why people would have wanted it to end 10-15 minutes earlier, when "all is said and done" (though as it turns out, not everything had been done)