さまよえる霊魂たち (2001)

This horror-documentary, supervised and featuring paranormal organizer Takeo Ikeda, follows him and his team as they visit haunted sites. Among the locations explored are the "Inamuragasaki Cave" known as a gathering place for the spirits of those who drowned, and the "Hachioji Castle Ruins" where legend has it that the river once turned red with the blood of the Hojo clan.