Taichi Hiraga Keaton, the son of a Japanese zoologist and an English noblewoman, is an insurance investigator known for his successful and unorthodox methods of investigation. Educated in archaeology and a former member of the SAS, Master Keaton uses his knowledge and combat training to uncover buried secrets, thwart would-be villains, and pursue the truth...

Called "half-English" in Japan and "half-Japanese" in England, Taichi Hiraga Keaton is a failed college lecturer but a successful insurance investigator. He doesn't seem to belong anywhere in society, but with a sense of hope, he soldiers on as a maverick operative, traveling across the world and embarking on suspenseful adventures!