Yūrei

The supplied source material does not provide a specific mythic origin story for yūrei. Etymologically the name is a compound of 幽 (yū) meaning "faint" or "dim" and 霊 (rei) meaning "soul" or "spirit." The same source notes alternative classificatory labels (bōrei, shiryō) and situates yūrei as members of the unseen realm of departed souls who are thought to be barred from a peaceful afterlife. No canonical creation narrative is given in the provided materials.

The available source material does not supply a detailed, canonical physical description of yūrei. The primary description in the supplied text identifies them as figures analogous to Western ghosts but does not list consistent visual traits, clothing, or bodily features. The documentation therefore limits itself to the lexical identification and does not assert specific iconography absent from the source.

The supplied sources state that yūrei are thought to be spirits barred from a peaceful afterlife. Beyond that phrasing, the materials provided do not describe particular powers, behaviors, motives, or typical interactions with the living. No further abilities are documented in the supplied excerpts.