This paper describes the uniqueness of the series of detective stories written by Takeo Kanaseki during the 1940s in Taiwan. Kanaseki, a professor at Taibei University in the 1940s, wrote detective stories during his leisure, Old Mr. So at Ryuzan-Temple published in Taiwan being his most well-known detective story. In the context of Taiwanese literary works during the colonial period, Old Mr. So at Ryuzan-Temple differs from the detective stories written by other Japanese writers, which reflected racial hierarchy as a dominant force. Detective stories by other Japanese writers, for instance Jokaisen -kitan by Haruo Sato and the series of works by Masao Fukuda, all contain a hidden racial hierarchy. Yet this racial consciousness is conspicuo...