Bakeneko yūjo

The bakeneko yūjo arises from late‑Edo circulating rumors and their literary elaboration in the An'ei–Tenmei era (c. 1772–1788). Sources trace a core rumor to Shinagawa‑juku about an inn called Iseya where a serving wench was reputed to be a bakeneko; the inn was nicknamed Bakemono Iseya. These rumors appeared in printed entertainments and plays (kibyōshi, sharebon, hanashibon, and kabuki), with examples and related narratives appearing in works of the 1770s–1790s (for instance, references to nekomata rumors in the 1776 hanashibon Urikotoba and kabuki pieces such as late‑Edo dramas). Over time the rumor was fictionalized into a recognisable character type who embodied urban anxieties about courtesans, secrecy in the pleasure quarters, and the mysteriousness of cats.

Typical depictions show a courtesan who, after spending the night with a customer, secretly rises once the customer falls asleep; when observed she has a cat's face on a human body and is engaged in eating. Literary and theatrical scenes repeatedly describe her quietly eating seafood in hidden parts of the brothel — notably shrimp (including an image of 'crunching on a shrimp, head and all') and fish — and in some variants more gruesome imagery appears (for example a kyōgen picture book of a kabuki play that shows a leftover human arm at the courtesan's feet, or a scene that seems to show a courtesan gnawing on a human arm, later revealed as comic misperception such as a sweet potato). The visual trope thus combines a human female form, a distinctly feline face, nocturnal postures of feeding, and brothel settings such as corridors and the 'lowly room' where courtesans ate out of public view.

In the cited material the bakeneko yūjo is principally a theatrical and literary shapeshifting motif: nocturnal transformation from human courtesan to a cat‑faced being and secretive nocturnal eating. Sources do not enumerate broader supernatural powers; the figure is portrayed within narratives as capable of surprising or alarming a sleeping customer by revealing a cat's face and eating in private spaces. Variants in the literature depict the act as potentially dangerous or gruesome (suggestions of human‑flesh consumption) while other representations treat the scene as comic or satirical (mistaken perceptions, comic reversals). One specific fictional tale frames the transformation as part of an inheritance/lineage plot (a filial daughter training to shapeshift to inherit her parents' house), but this is a narrative detail of particular stories rather than a generalized supernatural system.