In the late Edo period, the concubines' position were the same as a jochu even if her child became the Shogun's heir, and only after her son became a shogun, she was treated very well as the closest relative of Okami (Shogun).
江戸時代後期になると、側室はたとえ我が子が将軍世子であっても自身の地位は一介の女中のそれと同等にとどまり、我が子が将軍になって初めてお上（おかみ、将軍）の最近親として礼遇された。