Oniroku Dan (16 April 1931 – 6 May 2011), born Yukihiko Kuroiwa, is the name most people mean by popular Japanese SM fiction. The stories did not stay on the page. Nikkatsu filmed them. Naomi Tani and the actresses who followed her turned humiliation, rope, and beauty under shame into the studio’s long S/M Roman Porno line. The usual verdict is soft pornography, not high literature. The industrial fact is harder to shrug off. Dan built a formula, trained directors and a run of SM queens, and already had a readership in Kitan Club before a major studio would spend the money.
He came from a family that lived around movies. His father had once wanted to be a screenwriter. His mother, Yukie Katori, had studied with the novelist who published as Sanjugo Naoki. After a law degree from Kwansei Gakuin University he went to Tokyo. Early on he made a living translating English-language television, including Alfred Hitchcock Presents, and he taught English at a junior high school. In the 1960s, under the name Matsugoro Kuroiwa, he wrote pink-film scripts for small independent studios. That is when the long working bond with Naomi Tani started, years before Nikkatsu made either of them a brand. He later said the interest went back to kindergarten, when what he wanted most was to tie up a young woman teacher. The person in that memory is an adult woman. The look is not a dungeon of invented monsters. It is a male gaze calling itself love.
Under the name Matsujiro Kuroiwa he had already been noticed in Ooru Yomimono. The name Oniroku Dan was made by Flower and Snake, serialized in the SM magazine Kitan Club. The 1974 film came first, then more related books, then a Nikkatsu Roman Porno series released between 1985 and 1987. In 1972 he founded another SM magazine, SM King, which lasted until 1974. Later writers who took up sadomasochism, Murakami Ryu among them, walked into a market Dan had already made visible.
The Golden Duo and the Oniroku Dan way
Nikkatsu spent years trying to bring Tani into Roman Porno. She agreed only if her first film was based on Dan’s Flower and Snake. The studio said yes. Masaru Konuma directed. Yozo Tanaka wrote the shooting script. Dan and Tani both objected to the departures from the novel. The film was still a hit. It is credited with opening the S/M genre inside Nikkatsu Roman Porno, and with making Tani the studio’s third Roman Porno Queen and the first SM Queen. Dan refused to take part in the follow-up, Wife to Be Sacrificed (1974). He later said that film was based on a story he had written and that he had insisted his name come off the credits. Konuma’s version is different: an original by Tanaka. Dan and the studio settled later. He gave Nikkatsu exclusive rights to his novels. Many were filmed with Tani. The association ran more than ten years, past her retirement in 1979. Critics called the pictures predictable. The formula he built for the scripts became the model for Nikkatsu’s long S/M series.
Dan named three purposes of S/M: punishment, confinement, and a sense of shame. He disliked S/M as plain punishment. What he wanted was distorted sexual desire, a male fantasy of a beauty suffering through shame. Konuma called that the Oniroku Dan way: search for the beauty of women, invent an ideal, and sell the fantasy to readers. Tani listed the actress Dan wanted. She had to look good in a kimono, have long straight black hair, carry enough flesh for the rope to leave a clear mark, and stay graceful under torture with a strong face. Tani met every condition. This is not modern consent culture. It is a theory of looking and shame that let audiences treat rope cinema as a style instead of as a snuff daydream.
Queens, job titles, and the factory after Tani
After Tani retired in 1979 his name stayed on the titles. The queens who followed included Junko Mabuki, Izumi Shima, Miki Takakura, and Ran Masaki. The job titles in those films — office lady, teacher, beautician, secretary, a white uniform next door to a nurse — are the Dan-Nikkatsu trick. Take a respectable Japanese feminine role and put it in rope until shame is the plot. The parts are adults playing roles. They are not schoolchildren.
Besides Flower and Snake, the Tani-era core includes Oryu’s Passion: Bondage Skin, Lady Moonflower, and Fairy in a Cage. Directors rotated. The novelist’s name did not. The machine was still running in the late 1980s, in pictures such as Wife to Be Molested and Exotic Mask in Hell. The Best of S&M (1984) billed him as presenter of Nikkatsu’s SM highlights, not as the producer. By then “Dan Oniroku” on a poster was a genre tag.
A few 1980s titles show the formula at its most specific. Fumihiko Kato’s Girl and the Wooden Horse Torture (1982), with Serina Nishikawa, puts the wooden horse in the scene as furniture, not as a metaphor. Satoru Kobayashi’s Female Bondage Torture (1984), also released as Hanging Lust, starred Yui Maisaka. Suspension carries risks to nerves, circulation, and falls. The film is not a how-to. Hidehiro Ito directed Mabuki in Secretary Rope Discipline and Female Beautician Rope Discipline. Genji Nakamura shot Takakura in Beauty in Rope Hell. Later entries such as Shuji Kataoka’s Wife to Be Molested and Shōgorō Nishimura’s Sisters to Be Sacrificed run a domestic or sibling premise through the same shame engine. By the early 1990s Dan had written more than two hundred SM novels and stopped after a business failure. Nearly ten years later he returned with the autobiography The Flower Must Be Crimson: The World of Oniroku Dan, and demand put him on eight serialized magazine novels at once.
What outlived him
The name kept working after his death. In 2010 Kyōko Aizome starred in The Slave Ship. Flower and Snake: Zero arrived in 2014. In 2010 Vertical, Inc. published Season of Infidelity, translated by Chris Violet, four late stories first issued in Japanese in 1997. The last, “Bewitching Bloom,” is his account of the partnership with Tani and names the three Nikkatsu queens who followed her.
From contemporary kinbaku or negotiated power exchange, this work is ancestral to the studio era and it is also pre-consent culture. Kimono, black hair, rope marks, shame, and confinement are the materials. He insisted the charge was humiliation, not beating someone until the page goes numb. That is not modern scene negotiation. Watch the Tani films first. Read the late prose in Season of Infidelity if you want the writing. The 1980s office-lady rope titles are the industrial continuation, not a second Golden Duo. The studio did not invent Japanese SM fiction. It bought the writer who had already trained the readers. The boy who wanted to tie up that adult woman teacher, and the man who would not bring S/M home to his wife, are the same writer.
