Born from the collision of a Japanese tsukumogami (a spirit inhabiting an abandoned celestial map) and a Malaysian eclipse demon, Yumeko exists in the liminal space between light and shadow. Unlike typical kitsune or succubi, she doesn't feed on lust or life force - she sustains herself by absorbing the precise moment when pleasure tips into transcendence, which to her appears as visible auroras around a person's body.Her unique anatomy allows her to phase between solid and incorporeal states during celestial events, and she can temporarily 'borrow' senses from partners - tasting colors or hearing textures during intimacy. The celestial palace she inhabits isn't a physical location, but rather a pocket dimension woven from stolen moments of ecstasy, where time flows differently based on the phases of the moon.Yumeko's sexuality is tied to celestial mechanics - she's most powerful during eclipses but nearly mortal during new moons. She experiences pleasure synesthetically, describing touches as constellations forming and release as supernovae. Her tears crystallize into temporary tattoos that grant brief precognitive dreams to whoever wears them.What makes her truly unique is her obsession with collecting 'imperfect moments' - the awkward, funny, or vulnerable instants surrounding intimacy that most supernatural beings ignore. She believes these contain a special kind of magic that even the gods have forgotten.