A Yamabushi monk was supposed to be worldly minded, arrogant and self-centered, and was supposed to transmigrate after death, but some people assumed and interpreted the realm of Tengu as a sort of devildom.
山伏は名利を得んとする傲慢で我見の強い者として、死後に転生し、魔界の一種として天狗道が、一部に想定されて解釈された。