From the late Heian period to the Kamakura and the Muromachi period, koka of Imperial Princess came to an end because of the increase of nyoin (woman bestowed with the title "in") and the decrease of giving the title of Imperial Princess.
その後は女院の増加や親王宣下の減少などにより、平安後期から鎌倉時代・室町時代にかけて、内親王の降嫁は殆ど途絶える。