Survey Map of a Paradise Lost (1988)

Reporter Nukada's next big assignment is the secret world of Japanese phone sex clubs. He gets in touch with Midori, a part-time employee at the Banana Club, but is startled to hear she's been implicated in the bloody death of a client with perverted tastes, Kihara.
Sensing a bigger story, Nukada uncovers a link between Midori and the late Kihara's wife and realizes that the situation is much more complex than he imagined. And in this world of blood-play and electro-sex, the biggest shock has yet to be announced...