This film is very personal to its director. The film was shot in the places where he lived as a child, and scenes in Korea were filmed in the village where the director's origins belong.
In the Q&A session at Red Sea International Film Festival, the director said, in response to the reason for choosing the name of the movie, that he always listens to music while writing his films, at that time he was listening to an album called "Riceboy Sleeps" by Jon Thor Birgisson, which prompted him to use it as a placeholder title, but the title stuck and became the definite title.
The film was shot in two different aspect ratios. The scenes set in Canada are filmed in 1.33:1, while those in Korea are filmed in 1.78:1.