The group continued losing members, particularly after the 1919 formation of the Koseikai (Fairness Group) by the Barons in the House of Peers, at which point, having lost the majority of its members, the Doyokai had lost the qualification as a internal negotiation faction of the House of Peers, and it was therefore decided to merge the group with the first Mushozoku (Unaffiliated Group).
特に1919年の男爵議員による公正会結成に伴う同議員の大量離脱に伴って院内交渉団体としての資格を失ったのを機に解散して第1次無所属との合同を行うことを決定する。