Nagai Go no Kowai Zone: Kaiki (永井豪のこわいゾーン 怪鬼 nagai gou no kowai zo^n kai ki, translated as Go Nagai's Scary Zone: Mysterious Demon) is a Japanese direct-to-video horror film released in 1989 by the Bandai Media Division (now Bandai Visual). It was the first film co-directed by Go Nagai along with Hikari Hayakawa. It features special appearances of other manga artists such as Chiaki Kawamata. The film has a sequel called Nagai Go no Kowai Zone 2: Senki.