A one-of-a-kind documentary about paranormal investigations in the underworld, set in Kitakyushu, Fukuoka Prefecture, now streaming on Amazon Prime Video. Buffeted by a series of completely unforeseen events, the investigation takes an unexpected turn. This ambitious work, driven by sheer determination, even fell into a state where continuation seemed impossible at one point, but was brought to release thanks to the success of its crowdfunding campaign.