The Ko Roppa (the hard-line six parties) was a pro-nationalistic federation of six political parties that advocated a strong foreign policy in 1890s.
硬六派（こうろっぱ）とは、1890年代に対外強硬論を唱えていた対外硬路線を掲げる国家主義・国粋主義的な6党派の連合のこと。