Isao Takahata's 'Grave of the Fireflies', based on the autobiography of the same name by Akiyuki Nosaka, takes place during World War II. It involves a teenage boy and his little sister trying their best to survive in desolated Japanese towns after frequent bombings by the Americans. The film explores heavy themes such as societal breakdown, the urge to survive, the love between individuals, and the shortness of life.