Sadao Araki
Membership of the "Kokuhonsha" included many of Hiranuma's colleagues from the Ministry of Home Affairs, important businessmen, as well as some of the most powerful generals and admirals, including generals Sadao Araki, Jinzaburō Masaki, Makoto Saitō, and Yamakawa Kenjirō with war hero and admiral Tōgō Heihachirō serving as honorary Vice Chairman. By 1936, it claimed to have a membership of over 200,000 in 170 branches. The "Kokuhonsha" published a newspaper, and acted as Hiranuma's political support group.