Kitsune

Kitsune are foxes, not a separate species of spirit: in Japanese belief an ordinary fox is held to gain power with age, growing additional tails to a maximum of nine and acquiring the ability to take human shape, most often that of a woman. Two roles are usually distinguished. The zenko ("good foxes") are the servants and messengers of Inari, the deity of rice, agriculture and prosperity, and pairs of stone foxes flank the entrances to the many thousands of Inari shrines across Japan, often with a key or a jewel in the mouth. The yako or nogitsune ("field foxes") are tricksters or malevolent, given to deception, possession and seduction. The same animal thus stands at both ends of the moral scale, and which face it shows depends on the story and the shrine.

The most famous single kitsune narrative is that of Tamamo-no-Mae, a beautiful and brilliant court lady serving a Japanese emperor whose true form, revealed by a court diviner, was a nine-tailed fox spirit; hunted down after her exposure, she was killed and, by the fullest form of the legend, her spirit passed into the Sesshoseki, the "killing stone," said to poison or slay anyone who touched it until a Buddhist monk finally shattered and pacified it centuries later. Fox possession, kitsunetsuki, was also taken seriously enough as a folk affliction that it drew the attention of early Japanese psychiatric writers, among them Erwin Balz, who described it as a culture-specific condition in the late nineteenth century.

Within Shinto specifically, as distinct from the much wider body of Japanese fox folklore, the kitsune's clearest institutional role is as Inari's shinshi, or divine messenger. Inari is one of Japan's most widely worshipped kami, presiding over rice, agriculture more broadly and, by extension in later centuries, over trade and prosperity, and the fox came to be so closely identified with this cult that many worshippers popularly, if inaccurately, treat Inari and the fox as interchangeable. Stone kitsune statues flank the approach to Inari shrines in matched pairs, typically holding a key symbolizing the granary, a jewel symbolizing the deity's spirit, a sheaf of ripened rice or a scroll in their mouths, and offerings of fried tofu, said to be a fox delicacy, are still left at these shrines today.

Fushimi Inari Taisha south of Kyoto, head shrine of an estimated thirty thousand Inari shrines across Japan, is famous above all for its tunnels of thousands of vermilion torii gates donated by worshippers over centuries, each inscribed with a donor's name, climbing the sacred Mount Inari behind the main shrine buildings. The association is old enough that by the medieval period, Inari worship and kitsune veneration had become largely inseparable in popular practice, even as Shinto priests maintained doctrinally that the fox served the kami rather than embodying it.

The most famous individual kitsune is Tamamo-no-Mae, a beautiful court woman revealed to be a nine-tailed fox who had, in the legend, brought ruin to courts in India and China before appearing in twelfth-century Japan; exposed by a diviner, she flees and is finally killed, her spirit lodging in the "killing stone" (Sessho-seki) of Nasu. Belief in kitsunetsuki, fox-possession, a person, usually a woman, taken over by a fox spirit and speaking or acting as it, was widespread into the modern period and had real social consequences, with certain families stigmatised as "fox-owning" households.

The nine-tailed fox has since travelled far beyond Japan through anime, games and film, where it is often detached from Inari and from the possession beliefs and treated simply as a powerful shapeshifter, a modern flattening of a figure that in its home tradition was tied closely to a specific deity and to real anxieties about spirit affliction.

Beyond the Inari cult, kitsune carry a far more ambivalent reputation in Japanese folklore, and later tradition sorted them broadly into zenko, benevolent celestial foxes serving Inari and protecting households, and yako or nogitsune, wild field foxes prone to mischief, deception and outright malice, capable of possessing a person, a condition called kitsunetsuki that folk healers and some Buddhist and Shinto ritualists were called on to treat. Age and wisdom were thought to increase a fox's power and its tails, with the most formidable kitsune growing as many as nine tails, a motif shared with related fox-spirit traditions across China and Korea, where the huli jing and kumiho occupy comparable folkloric ground, suggesting a long history of cultural exchange around the fox as a liminal, shape-shifting figure rather than a purely Japanese invention.

A shapeshifting kitsune was said to favor the form of a beautiful woman, and the folk tale genre of a man unknowingly marrying a fox wife, the story of Kuzunoha being the best known example, recurs throughout premodern Japanese literature and theater. Modern Shinto practice keeps only the Inari-serving, protective side of this inheritance in active cultic use; the trickster and possession lore survives mainly as folklore and popular culture rather than shrine ritual.