The Nopperabō Legend of Akasaka

The Akasaka nopperabō legend is a kaii account said to have occurred on Kii-no-kuni-zaka, near the Kishū domain estate in Edo-period Akasaka. The story is widely known through Lafcadio Hearn's inclusion of it in his 1904 collection Kwaidan, in the chapter titled 'Mujina'. A merchant hurrying along a night road speaks to a weeping woman at the water's edge. When she turns to face him, her countenance bears neither eyes, nose, nor mouth—only smooth, egg-like skin. Alarmed, the merchant flees to a roadside soba stall seeking shelter. When the proprietor turns around in response to the merchant's plea, the proprietor too is revealed to be nopperabō.

The tale is constructed around a two-part 'reversal structure': first, the encounter with the kaii; second, the revelation that the rescuer is likewise the uncanny being. This exemplifies the classical 'double fall' pattern in Japanese ghost narratives, in which the psychological shock of rejection surpasses the initial terror of the encounter. Because the nopperabō is explained as the transformation work of a badger (mujina), the story belongs to the lineage of badger tales circulating in the Kantō region.

The identified location is Kii-no-kuni-zaka in Akasaka, Minato Ward, Tokyo. During the Edo period, the slope lay along the embankment facing the upper residence of the Kishū Tokugawa family—now the site of the Akasaka Imperial Villa and the East Palace grounds. It was known as a boundary place where foot traffic ceased at night. The setting represents a canonical stage in Edo-period kaii geography, standing alongside the 'Oitekelori' tale from the Seven Mysteries of Honjo.

The account appears in Lafcadio Hearn's Kwaidan (明治三十七年, 1904), in the chapter 'Mujina'. The original narrative derives from oral tradition and Edo-period miscellaneous writings; Hearn based his version on interviews conducted during his residence in Tokyo. Related variants appear scattered through Edo-period kaii narratives and early modern essays, though current familiarity with the story rests largely on Hearn's rendering.