The Japanese Nationalist Party traces its roots to the Konkikai (紺旗會, literally “Blue Flag Society”), a secret Japanese nationalist organization that was founded by Nagayama Yoshida, a Spanish-Japanese War veteran, and Kita Ikki, a nationalist-minded intellectual, in 1907. The Konkikai’s political ideology was mostly a syncretic amalgamation of militant Japanese nationalism, social progressivism and economic socialism. In 1910, most of Konkikai members and its leadership decided to participate in mainstream Japanese politics by joining the Constitutional Nationalist Party (立憲國民黨 Rikken Kokumintō), led by Inukai Tsuyoshi.