This index defines one of the primary demonic power domains of Japanese folklore. It documents oni and other demonic beings whose narratives are associated with punishment, chaos, overwhelming force, and moral consequence.
The figures collected here embody transformation, retribution, and social boundary enforcement, with their roles varying widely across regions, historical periods, and narrative traditions. They reveal how Japanese folklore encodes fear, justice, and moral warning into powerful supernatural forms.
This domain forms the demonic power pillar of Japanese folklore, linking oni legends, moral mythology, and supernatural justice into a unified folkloric structure.