The Blood-Stained Bamboo Dolls

(from ebookjapan):
A long-form mystery about the struggles of a slightly mysterious girl with a psychic sense, Maiko Goukoku!　This time, her task is to trace the disappearance of Michiko Mikawa, a great star who retired at the peak of her popularity. She has already been hiding from the public ...... eye for half a century since her retirement, but where ...... is she now?　In fact, her disappearance is related to a horrifying custom that has been handed down from generation to generation in a certain region...!