page_title: Tesso
hierarchical_section_title: Tesso
context_page_description: Tesso is a Japanese yōkai related to the vengeful spirit of the Heian period monk Raigō and a mouse. The name "tesso" is a name given by Toriyama Sekien in the Edo period collection of yōkai pictures, the Gazu Hyakki Yagyō, and this yōkai can also be called the Raigo-derived name Raigō-nezumi as from the Enkyōhon, a yomihon version of the Heike Monogatari, or Mii-dera-nezumi derived from Mii-dera in Ōtsu, Shiga Prefecture as in the Edo period yōkai themed kyōka picture book, the Kyōka Hyaku Monogatari. They became known starting in the Heisei period from its adoption in the mystery novel Tesso no Ori by Natsuhiko Kyogoku.
context_section_description: Tesso (鉄鼠) is a Japanese yōkai related to the vengeful spirit (onryō) of the Heian period monk Raigō and a mouse. The name "tesso" is a name given by Toriyama Sekien in the Edo period collection of yōkai pictures, the Gazu Hyakki Yagyō, and this yōkai can also be called the Raigo-derived name Raigō-nezumi (頼豪鼠) as from the Enkyōhon (延慶本, alternatively read Enkeihon), a yomihon version of the Heike Monogatari, or Mii-dera-nezumi (三井寺鼠) derived from Mii-dera in Ōtsu, Shiga Prefecture as in the Edo period yōkai themed kyōka picture book, the Kyōka Hyaku Monogatari. They became known starting in the Heisei period from its adoption in the mystery novel Tesso no Ori (The Tesso's Cage) by Natsuhiko Kyogoku.
caption: "Mii-dera Raigō Ajari Akunen Nezumi to Henzuru Zu" from the Shinkei Sanjūrokkai Sen by Tsukioka Yoshitoshi. It faithfull depicts the writings in the Genpei Jōsuiki.[2]。
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