Nihon Ryōiki

Nihon Ryōiki (日本霊異記^?) is an early Heian period setsuwa collection. Written by Kyōkai between 787 and 824, it is Japan's oldest collection of Buddhist setsuwa. It is three volumes in length.

Commonly abbreviated as Nihon Ryōiki, which means "Ghostly Strange Records from Japan," the full title is Nihonkoku Genpō Zen'aku Ryōiki (日本国現報善悪霊異記^?). It may also be read as Nihon Reiiki. The book has been translated into English under the title Miraculous Stories from the Japanese Buddhist Tradition, but this does not represent a literal translation of the Japanese title.

The work is composed of three parts contained within three volumes. Each volume begins with a preface, and the final volume contains an epilogue. There are a total of 116 tales all dealing with Buddhist elements. There are also a total of nine poems.

There are five existing manuscripts:

All manuscripts are incomplete. The full text must be reconstructed from multiple manuscripts.

The text contains a number of words in man'yōgana, an archaic orthography that may be used to express Jōdai Tokushu Kanazukai. While it is an Early Middle Japanese text, it is early enough to still preserve the distinction between ko₁, ko₂ and he₁, he₂ prior to their mergers.

...
Wikipedia