Kanedama

No classical or widespread mythic origin is attested in the supplied sources. A localized folkloric note from an Adachi ward entry records Kanedama as a household-associated phenomenon: a "kanedama ball of money" that carries money, moves around and flies with a growl, and whose coming out of a home is said to foretell that the family will perish. The same local account mentions a Kanedama that had fallen into a backyard and persisted for decades, implying a long-term household presence in that anecdote. Modern origin narratives are fictional inventions for entertainment media (for example Sentai/Power Rangers franchise backstories making it a toy/robot or formerly benevolent luck-bringing yōkai), and these should be distinguished from the brief traditional attestation.

The traditional folkloric description in the cited Adachi ward note is minimal: Kanedama is presented as a "ball of money" that moves and flies while growling. Modern media renderings diverge significantly: Sentai/Power Rangers sources depict Kanedama as a golden robot or toy/slot-machine–themed yōkai capable of anthropomorphic combat actions and visual motifs (coin imagery, robotic body). In the Kyōkai no RINNE manga excerpt, the entity appears as a ghost from whose chest a bill can be taken (the ghost disintegrates when a bill is snatched), suggesting a torso-like form in that adaptation. These visualizations are adaptations for narrative and merchandising purposes and differ from the sparse folkloric note.

Folkloric behavior attested in the Adachi ward note: Kanedama "carries money," moves around and flies with a growl, and its departure from a household is associated with that household's demise; a long-term presence in a backyard is recorded in a local anecdote. In modern portrayals the theme of money is elaborated into specific abilities: Sentai/Power Rangers versions attack by blasting giant coins or coin-like projectiles and function as combat antagonists, while the Kyōkai no RINNE manga depicts a Kanedama containing or hoarding paper money that can be removed (in the scene cited, removing a bill causes the ghost to disintegrate). These media abilities are narrative devices rather than documented traditional powers.