However, the situation became complicated because Imperial Princess Koshi gave birth to Tsuneyo before the Empresses (Imperial Princess Asahara and Imperial Princess Takatsu, respectively, on this occasion) of Emperor Heizei and Emperor Saga.
ところが、平城・嵯峨両天皇の后（当時の后はそれぞれ朝原内親王・高津内親王）よりも先に高志内親王が恒世を儲けたことで事態は複雑となった。