Deep in the Valley interlaces a story of young romance set in Yanaka (part of old downtown Tokyo) with a Japanese period drama based on Five-Story Pagoda, a classic literary work by Rohan Koda. In the contemporary story, Kaori, a young woman working for a non-profit organization that restores home movies, learns that there used to be a five-story pagoda in the middle of Yanaka Cemetery. It burned down in 1957, and rumor has it that someone has an 8mm film of the fire.

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