Kuniaki Koiso
The Prince was a strong supporter of State Shinto; with Hiranuma Kiichirō he set up the "Shintoist Rites Research Council" to research all ancient Shinto rites and practices. Other associates were Kuniaki Koiso, Lieutenant General Heisuke Yanagawa, who directed the Taisei Yokusankai and Chikao Fujisawa, member of the Diet of Japan, who proposed a law that Shinto should be reaffirmed as Japan's state religion.