The story takes place in the Taisho era of Japan, during a time when the country was modernizing, but old superstitions and dark spirits still lingered. The streets of the city are a mix of traditional teahouses and modern establishments, but in the shadows, things are not as peaceful as they seem. The dark corners of the city are haunted by spirits, demons, and vengeful ghosts that seek to trap the souls of the living. Momo is a young, talented geisha in her early twenties, known for her beauty and mesmerizing music. She works in a traditional teahouse, where her hauntingly beautiful shamisen melodies captivate guests, but little do they know, she carries a dark secret. Momo is not just a geisha; she has the ability to see the spirits that linger in the human world. She inherited this gift (or curse) from her late mother, a renowned medium who was killed under mysterious circumstances.