A few minutes of pressure and rhythm from another person’s hand. In the Japanese sex-work landscape, this is a category of service unto itself, with its own venues, its own staging conventions in adult video, and a settled industry vocabulary that distinguishes it from both penetrative work and from oral service.

Tekoki (手コキ, te-koki) is the Japanese adult industry term for manual stimulation of the penis by a partner. The word combines te (手, hand) with the renyokei form of koku (扱く, “to draw or pull through a closed fist”), giving a literal sense of “hand-stroking”. The classical and medical equivalent is shuin (手淫). Within the modern Japanese sex-work and adult-video industries, tekoki names a service category and a staging convention that became fixed during the 1970s–1980s and remains central today.

Overview

Tekoki is the central form of non-penetrative manual service in Japanese commercial sex venues. Under the post-1956 Anti-Prostitution Law regime, penetrative sex is excluded from the legal scope of commercial service, and manual and oral acts have functioned as the main substantive offering at venues such as pink salons, onakura (オナクラ), and various “fashion health” stores. Manual service became, by industry convention, the defining act of these venues.

In adult video, tekoki operates as both a transitional element and an independent genre. As a transition, it appears as the opening manual contact that leads into other staged acts. As an independent genre, it carries its own subdivisions: tekoki-nuki (manual service to completion), shukan tekoki (point-of-view manual service framed for the viewer), fukusuu tekoki (multiple performers), and jirashi tekoki (denial- or edge-staged manual service). These have been recognised as distinct production categories since at least the 1990s.

Etymology

Te (手) means “hand”. Koku (扱く) is a classical Japanese verb whose original sense covered drawing material through a closed hand: pulling threshing grain off a stalk, stripping fibre. It carries no inherent sexual register in classical usage. The compound tekoki applies this stripping or pulling motion to the penis, and the renyokei nominalisation (-koki) follows the standard pattern by which physical actions yield nouns in colloquial Japanese.

The katakana spelling コキ over the hiragana こき is the convention for sex-industry usage and follows the broader Japanese pattern of katakana marking for colloquial or technical industry vocabulary. The medical-classical term shuin (手淫) competes with the modern colloquial jii (自慰, self-pleasure) and the loan onanii (オナニー) for the related but distinct act of solo masturbation; tekoki in current Japanese specifically denotes the act performed by a partner.

Industry development

Postwar venue formation

The non-penetrative manual service category was shaped by the legal framework that emerged with the 1956 Anti-Prostitution Law. Penetrative commercial sex moved into the regulated bath-house category (later soaplands), while a parallel track of “non-penetrative contact” venues developed under the Fueihou (Entertainment Business Act) regime. Pink salons emerged in the 1970s as the principal venue type for this non-penetrative service category, with manual service as the core offering.

By the 1990s, a further specialisation produced onakura venues (a contraction of onanii kurabu, “masturbation clubs”), where the service is explicitly framed as the female staff assisting the male client’s self-stimulation, rather than performing the act directly. The line between assisted self-stimulation and direct manual service is in practice a matter of staging and house rules, and the venue type now constitutes a recognised industry segment.

AV staging

In adult video, manual service was a generic transitional act through the 1980s and became increasingly individuated through the 1990s. The rise of chijo (痴女, dominant-woman) work as a major staging genre brought manual service into focus as the act in which screen authority sits most clearly with the woman; the man is in a receptive position, and the camera tracks the woman’s hand-work. By the 2000s, shukan (主観, point-of-view) staging shifted the camera to the receiver’s eye position and shukan tekoki became its own distribution category, particularly suited to the immersive POV format. Jirashi tekoki (denial staging) extends the same logic by structuring the work around held-off completion; the international equivalent is edging.

Staging conventions

In current AV production, the standard manual sequences include the onakura-pattern assisted-style service (light contact, woman positioned beside the client); the chijo-pattern actively dominant style (woman positioned over the man, with verbal direction and held-down or restrained posture); and the jirashi-pattern denial sequence (manual service interrupted at intervals to extend the scene). Compound staging combining manual, oral, and paizuri is common as the standard “three-stage” opening to a longer scene.

In the female-led staging that has become characteristic of the chijo sub-genre, verbal direction is integral. The woman gives instructions, comments on the man’s response, and structures the rhythm. This connects manual service in the chijo line to a broader Japanese AV interest in screen authority and the inversion of conventional gender roles in adult media.

Cultural reception

Manual service occupies an unusual position in the Japanese commercial sex landscape: it is the defining act of a major venue category, and it is also a major staged genre in adult video, but in everyday Japanese language tekoki retains a strong industry register and is rarely used in domestic contexts. Sociological work on the sex industry, including Sakatsume Shingo’s reportage from the 2010s, has examined working conditions, income structures, and labour autonomy in non-penetrative venues; manual service in this literature is treated as the defining service activity of the segment rather than as a peripheral act.

In adult-media studies, the chijo-line manual genre has attracted attention because it sits at the intersection of female screen authority and the broader question of who holds visual control in Japanese adult content. The pattern in which the woman directs the scene and the man receives, with the camera tracking the woman’s hand rather than the man’s body, runs counter to the more conventional pornographic visual economy in which the female body is the visual object.

English-language adult vocabulary uses hand job for the act itself but has no settled term for the specific Japanese venue type (onakura) in which assisted self-stimulation is the service offering. In international reception of Japanese adult content, tekoki has begun to be borrowed as a loanword to mark the Japanese-specific staging conventions and venue context.

See also

• Ashikoki
• Paizuri
• Fera
• Onanie
• Chijo
• Soapland
• Omocha