The following year it was renamed 'Getsuyo-kai' and with 50 members it became one of the initial assembly's leading factions like Kenkyu-kai (House of Lords) or Sanyo-kai.
翌年には名称を「月曜会」と改めると、50人を有して研究会_(貴族院)・三曜会とともに初期議会を代表する会派となった。