These five parties and a group of councilors who belonged exclusively to the Dai Nihon Kyokai were regarded as the "Taigai Ko Roppa" (six hard-line foreign policies faction) or the "Ko Roppa" for short.
この5党派と大日本協会専属議員を1会派と看做した併せて6つの党派を対外硬六派、略して硬六派と呼んだのである。