It's not known exactly when the faction was formed; however, Tateki TANI, Sukenori SOGA, Koyata TORIO, Hiroshi YAMAKAWA and Tadanari SHIMAZU formed it shortly after setting up Imperial Diet in November 1890.
明確な時期は不明だが、帝国議会が設置された1890年11月から程なく谷干城・曾我祐準・鳥尾小弥太・山川浩・島津忠済らによって結成された。