Trivia: Grave of the Fireflies
- Creator Breakdown: The original book was written by Nosaka as a way to come to grips with his guilt over the real-life death of his younger sister, who he had been caring for after their parents died:
My sister's death is an exact match with the novel. It was one week after the end of the war. At the countryside of Fukui prefecture where I was, it was the day the restrictions on lighting were removed. It must have been the 22nd. It was evening, and I was picking up my sister's bones. I was coming home in a daze when I saw the village lit up. There was nothing like my surprise then. My sister died in my side of the world, and the light was coming back in the other.
- Enforced Method Acting: In the Japanese version, Setsuko was voiced by an then actual four year old girl. They had to record her lines before animating the scenes. As the animators were unused to this, they tried to avoid angles from where her mouth could be seen.
- Hey, It's That Voice!: In the Central Park Media dub: