Oniroku Dan (団 鬼六 Dan Oniroku, April 16, 1931 – May 6, 2011) was a Japanese author who had been called, "the most celebrated writer of popular SM novels in Japan." Many of his stories have been filmed, most notably by Nikkatsu studio in their Roman Porno series. Dan had a close professional association with actress Naomi Tani throughout her career.

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