 Mishima's personal life was controversial, which makes him still a contested figure today.Ideologically a right-wing nationalist who opposed the westernisation of Japan, Mishima formed the Tatenokai, an unarmed civilian militia, for the avowed purpose of restoring power to the Japanese Emperor.On November 25, 1970, Mishima and four members of his militia entered a military base in central Tokyo, took the commandant hostage, and attempted to inspire the Japan Self-Defense Forces to overturn Japan's 1947 Constitution.