However, because the requirements to get the status of nyoin, which was originally the good treatment for real mother of emperor, gradually diversified as time passed, not all nyoins were able to receive the same treatment as that of Joko.
もっとも、本来、天皇の生母への優遇措置であった女院の地位に至る要件が時代がくだるとともに次第に多様化したことから、すべての女院が上皇と同じ待遇を受けることができたわけではない。