Conversation so far:
What was the Cultural background for the Departures (2008) film
Departures is a 2008 Japanese drama film directed by Yōjirō Takita.
How do the Japanese funerals go against the grains of Buddhist rites?
In traditional Japanese culture, the subject is considered unclean as everything related to death is thought to be a source of kegare.
What else can you tell me about the cultural background for the film, Departure?
After coming into contact with the dead, individuals must cleanse themselves through purifying rituals.

Question: What was the greatest cultural background factor affecting the film?
Self-contained rewrite: What was the greatest cultural background factor affecting the film, Departure?