Konstantin Preobrazhensky - former intelligence officer, journalist and writer, author of books about Japan; “Bamboo Sword”, “Sports Kimono”, “How to Become Japanese”, “Unknown Japan” - and numerous publications. This book was published in Japan in 1994 and had the effect of a bomb exploding. It presents the bright and contradictory world of the Tokyo KGB station, showing the intelligence kitchen hidden from outsiders. The author also talks about the activities of the KGB in Russia - about military counterintelligence, work in religious organizations, about the preparation of intelligence officers for work abroad, paying special attention to internal control in intelligence and surveillance of its own employees. K. Preobrazhensky often appears in Russian and world media as an independent expert on intelligence issues.