In a nightlife district, a young man holds a phone in one hand and an empty glass in the other, replying to several messages at once. The woman he met tonight sits beside him; another woman’s text waits in his pocket. The web of his relationships has no clear outline, even to himself.

Yarichin (ヤリチン) is slang for a young man who frequently has short-term sexual relationships with many women. It is a compound of yaru (“to do”, as in to have sex) and chin (slang for the penis), a thoroughly coarse contemporary colloquialism in wide circulation. It is used both as an insult and as a term that the man himself, or his friends, apply with a touch of pride. In recent years it has become a frequent character archetype in BL and seinen manga, used as a starting point for characterisation.

Etymology and usage

The term appears to have formed from the 1990s onward. Earlier words such as nanpa-shi (“pickup artist”), playboy, and asobinin (“playboy, dilettante”) preceded it, but yarichin spread as a more direct and slangier alternative. Its first appearance in print is unclear; it surfaced in general media as youth slang in the 2000s and is now established enough to appear in dictionaries.

The counterpart term yariman (the equivalent for a woman) runs in parallel. The two are structurally symmetric but socially asymmetric in evaluation. The male yarichin is sometimes spoken of among friends as an expression of “ability” or a “war story”, whereas the female yariman tends to function as a strong slur. This asymmetry reflects gendered differences in the social evaluation of sexual assertiveness.

Derived terms include yari-moku (someone whose only aim is sex), nikushoku-kei (“carnivore type”, actively pursuing partners), and nanpa-shi. Their meanings overlap, but yarichin focuses on the sheer quantity of relationships, yari-moku on the bluntness of purpose, and nanpa-shi on method and technique.

Establishment as a character archetype

Yarichin functions as an established character archetype in both male- and female-targeted creative work.

In BL, the yarichin top is especially frequent. The relationship-transformation pattern in which an experienced top who has had many partners changes into a devoted lover upon meeting his fated bottom is well established. The “yarichin falls genuinely in love” arc functions as a device that heightens the specialness of the relationship. Several commercial BL titles bear the word yarichin, and the attribute has achieved independent standing.

In shonen and seinen manga, the yarichin attribute is often assigned to a supporting character around the protagonist. Set against a protagonist who is a virgin or a passive “herbivore” type, the experienced friend serves as a contrast. In romantic comedies he functions as advisor and guide, handling the sexual side of the story.

In erotic manga and eroge, yarichin is sometimes the protagonist, in which case the act of having relationships with one woman after another becomes the narrative core itself. This is a pattern seen in harem and netori works.

Comparison with adjacent attributes

The virgin functions as the opposite concept. The two sit at the poles of the same axis of sexual experience and often appear in contrast in fiction. The movement along this axis, “from virgin to yarichin”, or “the yarichin who, through a genuine connection, comes to know a first-love feeling like a virgin’s”, can become the theme of a story.

The “herbivore man” is likewise discussed as a contrast: where the herbivore is passive toward relationships, the yarichin goes beyond active to habitual. Intermediate classifications such as “carnivore type” and “healthy romantic orientation” are arranged as gradations of the attribute.

Hosts and male escorts differ in the context of the act. The host or escort provides sexual service as a profession, whereas yarichin denotes the frequency and quantity of sexual activity in private relationships. The boundary is blurry in practice, and overlaps such as “the ex-host yarichin” or “the host with a yarichin temperament” occur in fiction and in life.

Reception and narrative function

Yarichin is used frequently in fiction because of its efficiency in characterisation. Merely presenting “he is a yarichin” lets the reader immediately grasp the outline of his past and present relationships, his accumulated sexual experience, his interpersonal skill, and his attitude toward women. The attribute is economical.

It is also an excellent starting point for transformation. The arc can introduce a turning point that negates “the past self” through an encounter or a devoted relationship with one particular partner. The contrast between before and after is large, which emphasises the specialness of the relationship. This is a core structure of romance and relationship narratives and supports the attribute’s broad utility.

The ambivalence of social evaluation

Social evaluation of the yarichin is two-sided. On one hand, sexual assertiveness, interpersonal skill, and attractiveness can be evaluated positively within male peer groups. On the other, the negative evaluations of someone who treats relationships carelessly, lacks sincerity, or harms partners run alongside it. With shifts in gender attitudes in recent years, the latter evaluation has grown stronger in public discourse. Compared with the slur force of yariman when applied to women, the evaluation of yarichin is relatively more positive, and the asymmetry itself serves as an index of gendered norms around sexual assertiveness.

Related terms

• Yariman
• Virgin (doutei)
• Nampa
• Host
• BL
• Harem
• Netori