The Ninja: An Invented Tradition?
Journal of Global Initiatives: Policy, Pedagogy, Perspective
Volume 9
Number 1 Interdisciplinary Reflections on Japan
Article 3
March 2015
The Ninja: An Invented Tradition?
Stephen Turnbull
Akita International University,
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Turnbull, Stephen (2015) "The Ninja: An Invented Tradition?," Journal of Global Initiatives: Policy, Pedagogy, Perspective: Vol. 9 : No. 1 ,
Article 3.
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Stephen Turnbull
Journal of Global Initiatives
Vol. 9, No. 1, 2014, pp. 9-26
The Ninja: An Invented Tradition?
Stephen Turnbull
The ninja is a well known phenomenon in Japanese military culture. The popularity of the
tradition is centered on the neighboring areas of Iga and Kōka where ninja are a profitable
tourist attraction. This paper examines the historical sources on which the ninja tradition is
based to see if the pre-eminence claimed by Iga and Kōka is justified. It is shown that they
were no different from several other places in their geography or their politics and that only
one reliable account of secret warfare can be identified before 1581, the year when Iga
Province ceased to exist as an independent self-governing entity. Secret warfare was
practiced throughout Japan but this tiny area of Japan claimed a particular expertise in it
and thereby invented a tradition that is still resonant today and now has all the hallmarks
of a cult.
The ninja has become a familiar figure in popular Japanese culture as the world’s greatest
exponent of secret warfare. He infiltrates castles, gathers vital intelligence, and wields a
deadly knife in the dark. His easily recognizable image is that of a secret agent or assassin
who dresses all in black, possesses almost magical martial powers, and is capable of
extraordinary feats of daring. He sells his skills on a mercenary basis and when in action,
his unique abilities include confusing his enemies by making mystical hand gestures or by
sending sharp iron stars spinning towards them.
There is much popular support for the historical truth that is supposed to lie behind
this familiar image. It is reminiscent of the passions displayed by the members of a religious
cult, because like any cult the ninja’s loyal followers staunchly defend both his worth and
his authenticity. Yet even the most devoted fans of what might be called “the ninja cult”
will acknowledge that a certain amount of exaggeration has probably taken place.
Similarly, only the most dogged ninja skeptic would dare to argue in an equally passionate
manner that the idea is a total fabrication. The usual approach, even among scholars, is
simply to accept the original ninja myth as a genuine historical phenomenon that has for
centuries been greatly romanticized and, more recently, highly commercialized.
This modern exploitation of the ninja has proved highly profitable, eclipsing anything
derived from Japan’s other great warrior tradition of the noble samurai, to whose example
of loyalty the ninja provides a dark antithesis of secrecy and deception. The samurai have
also been subject to exaggeration and commercialization in recent years, but whereas
examples of the samurai tradition are to be found all over Japan, the modern ninja cult has
one unusual feature in that its exploitation is concentrated in a very small area. This is the
former province of Iga (now part of Mie Prefecture) and the place with which it shares a
border, an area of modern Shiga Prefecture called Kōka. The two places once had much in
common and are often linked in the historical narratives. Nowadays Iga-Ueno City has by
far the most developed ninja-related infrastructure, making it is the best place in Japan to
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Journal of Global Initiatives
visit a ninja house and a ninja museum, to enjoy martial arts displays, and purchase a wide
range of ninja souvenirs.
The worldwide acceptance of an underlying reality for ninja has meant that is now
almost impossible to read even an academic text about Iga or Kōka without finding some
reference to its most famous sons. For example, Yūki’s account of the medieval castles in
Kōka includes references to ninja (1988, p. 121), and Yokoyama’s study of Oda
Nobunaga’s campaigns in Ise and Iga notes that in the latter area “the name of the Iga ninja
is celebrated” (1992, p. 29). More recently, Ferejohn and Rosenbluth’s War and State
Building in Medieval Japan begins with a paragraph about ninja who “existed sometime in
the mists of Japanese history” (2010, p. 1). Its authors clearly take them for granted because
they regard the ninja of Iga as,
… one manifestation of fierce and extensive resistance to encroaching armies in
the dying years of medieval Japan. Local farming communities, particularly
those in mountain valleys, armed themselves with simple weapons and guerrilla
techniques to forestall the trend towards territorial consolidation and centralized
taxation. (Ferejohn & Rosenbluth, 2010, p. 1)
This is a perfect summary of an important political trend of the times, but to link it to
the existence of ninja must not remain unchallenged, and such challenges have indeed been
mounted in the past. As Sugiyama (1974) reminded everyone, “Nowadays ninja are
regarded as the stars of Sengoku battles. However, there are very few authentic historical
records [about them]” (p. 205).
The aim of this present study is quite modest. The Iga-Kōka ninja tradition as it is
understood today began to take shape when Japan’s civil wars started to come to an end
during the early Tokugawa Period (1603-1868). There is no space here to trace its
subsequent development into a modern cult that involved the appearance of so-called ninja
manuals and ended with superheroes. I shall examine instead the historical sources that
relate to the Sengoku Period (conventionally 1467-1603, the time of Japan’s great civil
wars) to see if they provide any justification for the ninja tradition beginning in the first
place. I shall explore the issue in the light of Hobsbawm and Ranger’s (1983) classic notion
of an invented tradition, which they define as:
… a set of practices, normally governed by overtly or tacitly accepted rules and of a ritual
or symbolic nature, which seeks to inculcate certain values and norms of behaviour by
repetition, which automatically implies continuity with the past. In fact, where possible,
they normally attempt to establish continuity with a suitable (...truncated)