On December 22, 1891 Shigemitsu NANGO, Morimasa TAKEI, Gensho UMAYA, Shigeya OHARA and others were chosen by the Emperor to be inducted into the House of Peers, and the following day began to hold discussions at the Hoshigaoka Tea House (located in what was then Kojimachi Park) about forming a union and acting in concert.
1891年12月22日に貴族院議員に勅撰された南郷茂光・武井守正・馬屋原彰・小原重哉らが、翌日に当時麹町公園内にあった星ヶ岡茶寮において結束して行動するための団体結成を協議したことに始まる。