Gaijin on the Ginza — James Kirkup

Adventures of the gay Major Hilary Sitfast and his nymphomaniac cousin Miss Lorelei Thrillingly, out and about in modern Tokyo. The Major runs a small but profitable English language school. Lorelei wants to investigate the inscrutable East which, she feels, must be as extreme" as herself. This hilarious novel explores the seedier side of Tokyo life. The author, a distinguished poet, spent many years teaching in Japan.