Why did the greatest of Japanese analysts, Koji Shimura, whom Drongo himself calls “sensei” - teacher, call his student to Tokyo? How can a Russian help in investigating the circumstances of the mysterious death of another student of Shimura - the head of the security service of one of the largest banks in Japan ?Perhaps it is Drongo - and only he - who is able to see what happened with the fresh eyes of a person not subject to ancient Asian traditions - and find the right key to the mystery of the murder?..