The film has been released in numerous Western countries such as the US and Great Britain under the title Sky Blue. These versions have been slightly distorted, with the loss of two minutes of the running time compared to the original Korean cut.
In Japan, the film was adapted by Gainax. According to adaptation director Hiroshi Yamaga, Gainax changed the direction of the film to make the dialogue less "alien" to Japanese viewers.
A Director's Cut of the film was released on DVD in Korea on May 27, 2004. This version includes nine minutes of footage that wasn't present in the original cut plus a few changes to the dialogue.