怪異・妖怪伝承データベース（かいい・ようかいでんしょうデータベース）
Nichibunken yokai database
The online card index of folklore records kept by the International Research Center for Japanese Studies.
The International Research Center for Japanese Studies in Kyoto, usually called Nichibunken, opened its Database of Folklore and Yokai Phenomena online in 2002. It indexes tens of thousands of short records from folklore journals and local histories, each as a card: the name of the thing as it was said in that place, the prefecture and district, the year of publication, the journal, the collector and sometimes the teller, and a summary in Japanese.
The first set of pages in this site’s records library is built on sixty-four of these cards, summarised in our own words in English and linked to the original card. Nichibunken also keeps a database of yokai images, from which several of the scrolls and prints cited here are drawn.
Related yokai
Kappa
河童（かっぱ）
A child-sized water yokai whose strength lives in the water held by the dish on its head.
Yamauba
山姥（やまうば）
A man carries a woven object home from the hills, and that night a woman's voice demands the return of her ashinaka.
Yuki-onna
雪女（ゆきおんな）
A pale woman seen on winter roads, sometimes deadly, sometimes harmless, and never described the same way everywhere.
Umi-bōzu
海坊主（うみぼうず）
One account describes a vast Buddha-like shape crossing ahead of a boat on a clear, windless day, then slowly thinning until it vanished.