Honestly i have never seen the Korean version. I know for sure Asian films have highly original plots and mostly influence by its culture and way of living. From what i have seen, this is only duplicate version and honestly the execution of storyline is powerful. Spoiler alert: horrific incestuous and shameful. Im really biased when it comes to Elizabeth Olsen. But who wouldn’t? another powerful and unforgettable film she have! Old boy is disgustingly well plan movie next to Korean version. Audience are warned to be open minded and be ready to watch the rollercoaster horror ride they will get.