Okuma, who was expelled from the government due to a political upheaval that happened in 1881, got an idea to form a new political party, and he held a ceremony of inauguration at the Meiji Kokaido meeting hall in Tokyo on April 16, after announcing the intent to launch a new party on March 14.
明治14年の政変によって政府を追放された大隈が新党結成を構想し、1882年3月14日に新党の趣意書を発表して4月16日に東京の明治会堂で結党式を開催した。