Rainbow-Haired Girl and the Full Moon Promise

Under the glowing full moon in the night sky, a girl with long hair shimmering in rainbow colors sways gently. She is the descendant of a witch who holds the secrets of the stars, embarking on a journey this night to find her lost lover's soul. The light from her hair serves as a guide, starting a fantastical adventure. Her black dress fluttering in the wind tells of her determination. What story do you imagine for her?