Based on a novel by Dan Oniroku, probably best known for Flower and Snake, I am an S&M writer tells the story of Kurosaki and his much younger wife Shizuko. Kurosaki, Osugi Ren, at one point during his writer career wrote a type of literature termed junbungaku, pure literature, which distinguished itself from taishibungaku, popular literature.
In Japanese terms Oe Kenzaburo would fall into the realm of pure literature while Haruki Murakami, although he straddles both types of literature because of the various themes in his body of work, would fall into popular literature.
For a more Western view think of Thomas Pynchon being in the realm of pure literature while Stephen King falls into the realm of popular literature. Anyway, although Kurosaki set out at the early point of his career to write important works of pure literature the sells were dismal so he and his young wife led a less than ideal existence. However, a door apparently opened for Kurosaki to write erotic S&M fiction and soon he and his wife owned a large, beautiful home and seemed to have all the material comforts that life had to offer, however, was he and his wife truly happy?
I am an S&M writer opens with Kurosaki and his assistant working in his home study. However, the type of work that they are doing might strike some as quite odd. Apparently Kurosaki is a very visual person, because within the confines of his study his assistant Kawada, who is also a master at erotic rope binding, has tied up a bargirl named Kyoko in a less than flattering position. Observing how the bondage effects both Kyoko's emotions and body, Kurosaki dictates his story to Kawada. All seems to be going pretty well until Shizuko walks in through the door. There is no great fight, but that night Shizuko states that she will begin sleeping in another bedroom away from the "pervert." However, things soon escalate and Shizuko strikes up a relationship with a foreigner and soon afterwards asks Kawada to her up also.
Despite the English title of this film, the Japanese title is Futei no kisetsu or Season of Infidelity, the S&M aspect of the film does not go beyond rope bondage, instead the film delves more into the power of the imagination. When Kurosaki learns that his wife is being unfaithful, he instead feeds off of this infidelity to feed his creativity and he seems to become more attracted to the conception of his wife as an adulteress instead of her actual blood and flesh being. This theory is given strength when Kurosaki himself engages in an act of adultery with the bargirl while listening to a tape of his wife with Kawada.
While no means a great film, I am an S&M Writer is a short glimpse inside the filmic world of Hiroki Ryuichi who also directed such films as Tokyo Trash Baby and Vibrator.
check more about this movie at http://www.imdb.com/title/tt0266568/