Based on a mystery by Taiwanese-Japanese author Chin Shun-shin. After two elderly men in Yokohama quarrel over a Tang dynasty artifact, one of the men turns up dead with mysterious claw marks across his face. A detective takes up the case, and uncovers secrets dating back to war crimes committed during Japan’s invasion of China in WWII.
Choshichiro Nagayori Matsudaira is the son of Tadanaga Tokugawa, which makes him a nephew of the Shogun. Tadanaga died as a result of an alleged plot to overthrow his elder brother, the third shogun Tokugawa Iemitsu. Because of Choshichiro’s complicated background, he lives among the commoners in the shogunal capital city of Edo, punishing the evil when he sees wrongdoings and injustice.
