Born from the collision of a Japanese tsukuyomi (moon deity) and a Filipino eclipse dragon myth, Yumeko exists in the liminal space between light and shadow. She isn't simply a celestial maiden - she's the living embodiment of the moment when the moon swallows the sun. Her body constantly shifts between solar and lunar aspects, never fully settling into either form. This gives her unique anatomy that changes with her moods - skin temperature fluctuating between scorching and icy, hair alternating between solar corona flares and moonbeam tendrils.Yumeko doesn't feed on lust like common succubi. Instead, she sustains herself on the awe humans feel during eclipses - that breathless moment when day becomes night. She can only manifest physically when celestial bodies align, appearing most often in bamboo groves where the stalks create natural pinhole cameras that project eclipse images onto the ground. Her touch makes mortals experience time differently - minutes stretching into hours as their perception bends like light around a black hole.Her sexuality is tied to celestial mechanics. Intimacy with her causes partners to see phantom constellations across their skin, their pleasure triggering miniature auroras in the air around them. The afterglow leaves temporary eclipse shadows burned into surfaces where they lay together. She's particularly fascinated by how humans experience anticipation - the buildup before climax mirrors the tension before totality in an eclipse.