Within the genealogy of contemporary kinbaku, there are figures whose value lies not in technical innovation or public visibility, but in the meticulous stewardship of a shared memory. Saikatsu, born in the late 1940s in Ishikawa Prefecture, belongs squarely in that second category.
For twenty-four years he served as assistant and friend to Akechi Denki, one of the most influential nawashi of the second half of twentieth-century Japan. That sustained closeness made him less a disciple than a living archive — a keeper of notes, dates, names, and stories that he preserved with the care of someone who understands that oral history, once left unrecorded, dies with the person who carries it.
His path, however, did not begin with Akechi. It began much earlier, as a consumer.
A student in Tokyo in the mid-1960s, he came across Kitan Club by chance at a friend's home, and from that point on became a regular reader of erotic and SM publications — Uramado, SM Collector, SM Select, SM Fan, SM Mania — and a dedicated viewer of the pink films that proliferated in that decade.
This detail matters for understanding his place in the story: before he ever held a rope, Saikatsu spent nearly twenty years as an attentive observer of a culture that in Japan remained deliberately underground. He summed it up in a phrase that captures the era well: "That world was truly clandestine, and we couldn't talk about it openly."
Entering Akechi's Circle
Saikatsu did not come to shibari with any intention of becoming a nawashi. He arrived in 1979 as a spectator at Akechi Denki's Phantom show, and two years later — almost by accident, when he stopped by to drop off some film rolls to be developed — he offered to fill a vacant front-desk position.
From there, for more than a decade, he became the most constant presence in Akechi's working environment: receptionist, video operator, ambient music coordinator for the shows, and eventually someone Akechi invited to try the rope for the first time, in 1983, without explanation or instruction of any kind.
His account of that moment reveals how transmission worked in that generation: "He didn't teach me how to do it. I simply learned by watching him... I tied and untied, and that was that. He didn't even tell me whether I was doing it right or wrong."
This learning-by-observation approach — with no explicit correction and no verbal feedback — stands in sharp contrast to the structured pedagogical systems that figures like Takumi Miura would later develop.
Saikatsu was never, in any strict sense, Akechi's student. He was his trusted assistant, present at every session during the ten years the office remained in Sasazuka — a period Akechi himself would later describe as the fullest of his career.
His role was always deliberately kept in the background. He never claimed the title of disciple (deshi, 弟子), and he consistently emphasized that Akechi formally recognized only three disciples, all women — Raika, Enka, and Kadera.
When, on one occasion for a production with Soft On Demand, Akechi lent him his rope and allowed him to use the name "Akechi Saiki" (明智才鬼), Saikatsu kept the corresponding business card as a personal memento — but never used that name again, not even after Akechi's death, when doing so would have been easy, and perhaps advantageous.
In a scene — the Japanese kinbaku world — where the inheritance of a name or lineage can become a flashpoint for dispute, Saikatsu's stance offers a useful counterpoint: someone who chose to preserve the accuracy of the historical record rather than capitalize on his proximity to a defining figure.
Teaching After Akechi's Death
Following Akechi Denki's death in July 2005, Saikatsu took on rope instruction at Black Heart, the well-known Ginza bar, under the name Shimokawa Satoru.
One of his documented lessons, published in 2011, gives a detailed account of kuchinawa shibari (口縄しばり) — a gag tie that incorporates the body's own rope as an element of oral restraint. The text is significant for its approach: alongside the technical instruction, Saikatsu explicitly addresses the consent of the person being tied, the risk of injury at the corners of the mouth, and the need for care when untying.
It is a pedagogy that holds together the raw aesthetic of the practice — the lesson itself speaks of "torment" (seme, 攻め) and the theatricality of dripping saliva — with an explicit concern for the physical integrity of the person receiving the tie. That balance was not always present in the teaching materials of the era.
In parallel, he continued in an advisory role within Bakuyukai (縛遊会), the association founded in 1996 by Akechi himself as its first president, and which after his death passed into the hands of Takumi Miura. Although Saikatsu never held a formal position in the structure — unlike Miura, or Harutokyo, the second-generation vice-president — he participated regularly in technical assessment sessions, checking alongside Miura and Marou the tension, form, and execution timing of the ties being examined.
His critical perspective on Bakuyukai's evolution toward a dojo (道場) model — a term that, as he explained, was not used in the early years, when sessions were simply called "training meetings" (koushuukai, 講習会) — offers a rarely available vantage point: that of someone who lived through the transition from informal, craft-based transmission to a graded, progressive classification system, today successfully exported to the international scene.
On the style that Miura ultimately developed, Saikatsu was direct without being dismissive: "I feel his style is slightly different from Akechi's... He calls it the Bakuyu style, but it is really just Miura's style" — an observation not intended to undermine Miura's work, but simply to draw, with historiographical precision, the line between transmitting a technique and creating a style of one's own.
Terminology and Ethical Stance
Beyond technique, Saikatsu left behind a reflection on the vocabulary of the practice that deserves its own place in the record.
He refused to use the term kinbakushi, preferring nawashi throughout — faithful to Akechi's own usage. And he drew a distinction between kinbaku (緊縛) and shibari with a precision that he himself acknowledged was difficult to fully verbalize: "I think the word shibari carries more weight than kinbaku... If you understand the meaning of the noun kinbaku, it becomes the verb shibari."
This is a distinction that reflects not any desire to fix a closed vocabulary, but the fluid and largely subjective nature of Japanese bondage terminology — something he recognized openly when he noted that "everyone has their own interpretation, even in Japan."
His ethical stance, expressed across several of his recorded interventions, kept returning to a point that was not always self-evident in the world he described: gratitude toward the person who consents to be tied.
He considered it inappropriate to introduce a play partner as "my slave" outside the private context of the practice, preferring the word "partner," and his sharpest criticism — directed equally at Japanese and foreign practitioners — was reserved for those who began teaching after minimal training: "There are people who start teaching after attending just a handful of classes, and I think that is out of place."
At a moment of rapid international expansion of shibari, this insistence on responsibility toward the person being tied — placed above any urgency to transmit knowledge quickly — is probably his most transferable contribution to the craft, and the one that travels furthest beyond any specific technique.
A Background Figure with Primary Value
Those who knew him consistently describe him as a discreet person, entirely uninterested in self-promotion — a quality one of his close associates summed up by noting that, alongside Matsui Kenji, he represented "what today might be called the old school: sadomasochism and eroticism revolved around the model, not around the person doing the tying."
That same source described him as someone who "kept his integrity completely intact, never compromising it for commercial reasons" — a pointed contrast to the lineage disputes and competing claims of affiliation that, according to multiple accounts gathered in his circle, multiplied on the Japanese scene as international interest in kinbaku grew.
His value to the historiography of the practice lies in having been, for more than four decades, a close witness and reliable memory of one of the central figures of postwar kinbaku — and in having transmitted afterward, with the same precision, both the inherited technique and the care owed to the person being tied.