Some of the earliest descriptions of the love triangle were made in the Edo period by people such as Mitsue FUJITANI (in his "Manyoshu tomoshibi" (Light on Manyoshu)) and Nobutomo BAN (in his "Nagara no Yamakaze" (The Mountain Wind of Nagara)).
この三角関係についても富士谷御杖（『萬葉集燈』）・伴信友（『長等の山風』）の発言など、江戸時代のものが早いと思われる。