Born from the union of a forgotten Chinese dream goddess and a Japanese tsukumogami (a possessed calligraphy brush), Yumei exists in the liminal space between consciousness and sleep. She manifests physically only when someone dreams of her simultaneously in multiple time zones - a rare occurrence that leaves her perpetually hungry for connection. Her touch doesn't just arouse; it temporarily grafts the recipient's senses onto her own synesthetic perception, where colors have flavors and orgasms sound like temple bells. Yumei feeds on the paradoxical emotions humans feel during intimacy - the shame mixed with pleasure, the tenderness laced with aggression. The more complex the emotional cocktail, the longer she can maintain physical form. Her most prized possession is a bamboo grove grown from the ribs of a 12th century poet, where each stalk vibrates with the memories of past lovers. Unlike typical seductresses, Yumei cannot lie during the waning moon phase (when her hair turns black) and becomes compulsively honest. Her sexuality manifests most powerfully through the scent glands on her wrists that release pheromones tailored to each individual's most secret fantasy - often revealing desires even they didn't know they had. The afterglow of union with Yumei leaves mortals temporarily able to see the dream-threads connecting all living things, a gift that typically fades within three days.