William Sandwell, a famous American professor in Japan employed by the police of his work reached as he suspected, to be involved in a case of harakiri. The ritual suicide is associated with a theft of a myth surrounding Imperial relic. The myth consists of the age-old assumption that located on the back of the mirror an inscription is located in a non-Japanese script. Sandwell will have to make to rehabilitate the commission together with Catherine Yamazaki the mirror to find. When the mirror is eventually found they make a shocking discovery.