Nure-onna

There is no single canonical origin; the nure-onna appears across Edo-period picture-books (e.g., Hyakkai Zukan, Gazu Hyakki Yagyō) and in regional oral traditions. Visual culture from the Edo period helped standardize an image of a woman with a snake body, while textual and local tales present multiple, sometimes conflicting accounts — for example, coastal/Ōda–Iwami narratives in Shimane associate the being with the ushi-oni ambush motif, and an early-19th-century (Bunkyū 2 / 1819) river-border account reported in secondary commentary describes a riverine wet-woman encounter. The figure functions as a polyvalent coastal/water uncanny rather than having a single mythic birthplace.

Accounts vary by region and medium. Edo-period picture-books commonly depict a woman with a human head/torso and an extended snake body. Folktales and summaries emphasize a perpetually wet appearance — especially long, wet hair — and often report the being carrying a small childlike bundle. Some regional tales attribute enormous tail-lengths in exaggerated form (a Bunkyū-era report, cited in secondary commentary, gives an extreme tail measurement in one variant). Other accounts present the nure-onna simply as a woman washing her hair at the water's edge, without an explicitly serpentine body.

Folklore descriptions are variable. A widespread motif has the nure-onna hand a small babylike bundle to an unsuspecting person; when the person attempts to hold or discard it the bundle becomes impossibly heavy, immobilizing them. In some stories a predatory outcome follows: the creature (or an allied ushi-oni) attacks and kills the victim, with certain accounts describing blood-sucking via a long, snake-like tongue. In other narratives the being is territorial and reacts violently if disturbed while washing her hair. Regional tales from Iwami present the nure-onna as acting in concert with an ushi-oni, using the bundle as bait for an ambush.