Departing for Onnakubi Station at 5 AM

(from ebookjapan): Onna-no-kubi village... the name comes from the fact that a long time ago, a wrongdoing woman was beheaded by the daimyo and her head was kept on a street in the village for a month.... In the Onna-no-kubi village, murders occur one after another between the rival Nitobe family and the Kukijo family. Kazuya, the eldest son of the Nitobe family and a newspaper reporter, returns to his hometown to solve the mystery of the murders!