A female yokai depicted by the Edo-period artist Toriyama Sekien in Konjaku Hyakki Shūi. She peers over a wall with her mouth agape, cackling kera-kera to bewilder passersby. Sekien alludes to a Chinese anecdote by Song Yu, likening her to the spirit of a woman whose coquettish laughter unsettled hearts. No specific locale or backstory is given; later tradition remembers her as a eerie, laughing apparition.