Spin-offs and Prequels
- The Sim-Feng Shui (シム・フースイ, Shimu-Fūsui?) series: Published 1993-2001. A multi-volume novel starring Tatsuto Kuroda, the grandson of the feng shui expert Shigemaru Kuroda from the main Teito Monogatari novel, as he struggles with various spiritual disturbances across Japan. The fourth volume of this series was made into an independent tokusatsu film titled Tokyo Dragon (東京龍, Tōkyō Doragon?), released in 1997.
- Teito Monogatari Gaiden Karakuri Dōji (帝都物語外伝 機関童子?): Published 1995. A spin-off of the main story, set in 1998 The film Teito Monogatari Gaiden (帝都物語外伝?) (1995) is loosely based on it.
- Teito Gendan (帝都幻談?): Republished 2007–2011. A prequel to the original novel, set during the Edo period. Illustrations by Shigeru Mizuki, with an introduction by Natsuhiko Kyogoku.
- Shin Teito Monogatari (新帝都物語?): Published 2001, republished in 2009. A follow-up to Teito Gendan, set during the Bakumatsu.
- Teito Monogatari Iroku (帝都物語異録?): Published 2001. The "secret origins" of Yasunori Katō. This collection features the writings of a multitude of Japanese authors.
- The Great Yokai War (妖怪大戦争, Yōkai Daisensō?): A 2005 fantasy film by Takashi Miike. Yasunori Katō leads an army of twisted yōkai on an invasion of Tokyo. Was made in cooperation with Hiroshi Aramata (who wrote the novel), Shigeru Mizuki and Natsuhiko Kyogoku.
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