Occult

is a 2009 J-horror, "found footage" film in the form of a documentary. The movie was written and directed by Kōji Shiraishi. Plot In 2005, a man named Ken Matsuki killed two people and injured a third in a mass stabbing before jumping off a cliff; his body was never found. Three years later, a documentary film crew led by Koji Shiraishi began a project chronicling the aftermath of the incident and interviewing survivors. One of them, Shohei Eno, is an unemployed man who had a strange petroglyph-like symbol carved into his back by Matsuki. To the crew's surprise, Eno states that he is thankful that Matsuki stabbed him as, in the aftermath, he has experienced "miracles", such as UFO sightings and disembodied voices. He further claims that he was given a mandate by Matsuki to perform a "ceremony" which he believes was the motive for the mass stabbing. Seeing that Eno is financially troubled, the crew agrees to let him live in their offices and pay him on the condition that they are allowed to film the phenomena he witnesses. Shiraishi's crew comes to be repulsed by Eno, especially since they think that he will follow Matsuki's path of mass murder. From Matsuki's father, the crew learns that Eno's symbol resembles the birthmark possessed by Matsuki since childhood. Their search brings them to Kutoro Rock (九頭呂岩, literally "Nine-Headed Spine Rock"), a formation at the peak of Mount Ohiruyama, where Shiraishi had a bizarre experience the same day as the mass stabbing in which leeches appeared on his leg. There, the crew finds a stone with Matsuki and Eno's petroglyph symbols inscribed on it. According to horror film director Kiyoshi Kurosawa, Kutoro Rock was dedicated to Hiruko, a Japanese god with the form of a leech. Meanwhile, the film Eno shoots following his daily routine reveals that the "UFOs" he sees are, in fact, leech-like apparitions that appear in the skies above Tokyo.