This chapter examines the Cherry Blossom Society's rebellion of 1931. The Cherry Blossom Society, or Sakura-kai, was a clandestine organization whose activities precipitated a wave of military violence in the early 1930s. Before discussing how the Sakura-kai escalated the familiar patterns of military resistance into an outright rebellion, the chapter provides a background on its leader, Lieutenant Colonel Hashimoto Kingorō. It then considers the Sakura-kai's alliance with civilian nationalistic societies before turning to the March Incident, which was plotted by Ōkawa Shūmei. It also describes the Manchurian Incident and the October Incident and concludes with a commentary on how the March and October incidents opened a new phase in the history of Japanese military insubordination.