Sources & References

Gazu Hyakki Yako (The Illustrated Night Parade of One Hundred Demons)

Toriyama Sekien — 1776

The first of Sekien’s four illustrated yokai encyclopedias. It established the visual iconography of most yokai still recognized today, systematizing centuries of oral tradition into a published catalog.

Konjaku Gazu Zoku Hyakki (The Illustrated One Hundred Demons From the Present and the Past, Continued)

Toriyama Sekien — 1779

Sekien’s second yokai bestiary, expanding on the first with new entities drawn from regional folklore, classical literature, and the artist’s own imagination.

Konjaku Hyakki Shui (More of the Demon Horde from Past and Present)

Toriyama Sekien — 1781

The third volume in Sekien’s series, featuring additional yokai with increasingly imaginative and literary sources.

Gazu Hyakki Tsurezure Bukuro (The Illustrated Bag of One Hundred Random Demons)

Toriyama Sekien — 1784

The fourth and final volume in Sekien’s series, focusing especially on tsukumogami — household objects that have come to life after a century of use.

Kojiki (Record of Ancient Matters)

Compiled by Õ no Yasumaro — 712 CE

Japan’s oldest surviving historical record and the foundational text of Shinto mythology. It contains the creation myths of Japan, the stories of Amaterasu, Susanoo, Izanagi, and Izanami, and the divine genealogies that underpin the imperial line.

Nihon Shoki (The Chronicles of Japan)

Compiled under Prince Toneri — 720 CE

A more detailed and politically oriented companion to the Kojiki. It provides variant accounts of the same myths and additional historical narratives essential for cross-referencing supernatural traditions.

Kwaidan: Stories and Studies of Strange Things

Lafcadio Hearn (Koizumi Yakumo) — 1904

The work of a Greek-Irish writer who became a Japanese citizen. His retellings of Japanese ghost stories remain among the most influential English-language introductions to Japanese supernatural folklore.

The Book of Yokai: Mysterious Creatures of Japanese Folklore

Michael Dylan Foster — 2015

A modern academic survey that contextualizes yokai within Japanese cultural history, media studies, and anthropology. Foster’s work provides the theoretical framework for understanding how yokai function as cultural symbols.

Pandemonium and Parade: Japanese Monsters and the Culture of Yokai

Michael Dylan Foster — 2009

An earlier scholarly work tracing the development of yokai discourse from the Edo period through modern Japan, with particular attention to cycles of scientific rationalism and supernatural revival.

Japanese Demon Lore: Oni from Ancient Times to the Present

Noriko T. Reider — 2010

A definitive English-language study of oni across Japanese literary, religious, and folkloric traditions, from Heian setsuwa to modern anime and manga.

Seven Demon Stories from Medieval Japan

Noriko T. Reider — 2016

Translations and critical analysis of seven otogizōshi tales featuring oni and related supernatural beings, offering primary-source access to medieval demon narratives.

Civilization and Monsters: Spirits of Modernity in Meiji Japan

Gerald Figal — 1999

An academic study of how supernatural discourse was rearticulated during Japan’s rapid modernization, examining the intersection of folklore studies, spiritism, and national identity.

National Diet Library Digital Collections

Japan’s national library provides digitized access to classical texts, Edo-period illustrated scrolls, and historical folklore publications, including original editions of Toriyama Sekien’s yokai encyclopedias.

Tono Monogatari (The Legends of Tono)

Yanagita Kunio — 1910

The foundational text of modern Japanese folklore studies, recording the oral traditions of the Tono region in northeastern Japan. It remains essential for understanding kappa, zashiki-warashi, and mountain spirits.

Regional Folklore Archives

Prefectural libraries and local history museums throughout Japan maintain collections of regional folktales, shrine records, and ethnographic surveys that document local variants of nationally known yokai.

Shrine and Temple Records (Engi)

The founding legends and historical chronicles maintained by individual shrines and temples provide primary documentation of the deities, spirits, and supernatural events associated with specific sacred sites.

International Research Center for Japanese Studies (Nichibunken)

Japan’s premier research institution for Japanese cultural studies, maintaining the Yokai Database — a searchable online archive cataloging thousands of regional yokai traditions with scholarly annotations.

yokai.com

Matthew Meyer’s long-running English-language yokai encyclopedia. A valuable entry point for English readers, drawing on Sekien’s illustrations and Japanese folklore scholarship.

Japanese Wikipedia (Yokai-related entries)

Japanese-language Wikipedia articles on yokai frequently cite regional sources, academic publications, and primary texts that are otherwise difficult to locate in English-language scholarship.

Kokugakuin University Encyclopedia of Shinto

A scholarly English-language reference maintained by Kokugakuin University, offering authoritative entries on Shinto deities, rituals, and concepts essential to understanding Japan’s supernatural traditions.