His books include "Nihon Yokai Ibunroku" (records of peculiar stories of Japanese yokai) and "Yokaigaku Shinko, Yokai kara miru nihonjin no kokoro" (new thought on the study of yokai, the mind of Japanese people through yokai).
著書には『日本妖怪異聞録』・『妖怪学新考－妖怪からみる日本人の心』などがある。