Cooperating with the largest parliamentary group, Kenkyu-kai group, they attacked the 4th Ito Cabinet of Rikken seiyu-kai (a political party organized by Hirobumi ITO) and the Saionji Cabinet, but in the Taisho Period a sense of danger against expanding Kenkyu-kai arose, and furthermore, when the Hara Cabinet of the Seiyu Party (the abbreviated name for Rikken seiyu-kai) was established in 1918 and Kenkyu-kai group sent its members to the Cabinet, they sharpened their anti Kenkyu-kai group stance.
最大会派の研究会と協調しながら、立憲政友会の第4次伊藤内閣や西園寺内閣などを攻撃していったが、大正期に入ると、研究会の膨張に対して危機感を抱くようになり、更に1918年に政友会の原内閣が成立して後に研究会が同内閣に閣僚を送り込むと、反研究会路線を強めていく事になる。