Maid in the inner palace - Ookujochu

Japanese: 大奥女中 - おおおくじょちゅう

...Ooku is divided into three parts: Goten-mukae, Ohiroshiki-mukae, and Nagatsubo-mukae. Goten-mukae is where the master of Ooku, that is, the Midori-kon in Honmaru, or the Omidori-kon or the wife of the Shogun's heir, and their children live. Ohiroshiki-mukae is the Ooku management office and where the male Ohiroshiki officials work. Nagatsubo-mukae is where the maids who work in Ooku, so-called Ooku maids, live. The Shogun's daily living area is Nakaoku in the front, but Nakaoku and Ooku are separated by a heavy wall and connected only by a corridor called Gosuzu-rokaku, and no men other than the Shogun could enter the Ooku side through the Gojoguchi, which was set up at the border between Gosuzu-rokaku and Nakaoku....

From [Use Number]

…Originally, this was the role of the person with the greatest military achievements, and a four-quarter-five-character sashimono was used as a battlefield marker. Incidentally, among the ladies-in-waiting of the Ooku, there was also a messenger (lower than the level of an audience), who delivered letters and gifts from the kitchen and higher-ranking ladies-in-waiting to the Ohiroshiki officials. [Kitahara Akio]…

*Some of the terminology used to refer to "Ooku maids" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…大奥は御殿向，御広敷向，長局（ながつぼね）向の3部分に分かれる。御殿向はその大奥の主人，すなわち本丸ならば御台所，西丸ならば大御台所もしくは将軍世子夫人，その子女たちの居住する場所，御広敷向は大奥管理事務所で，男の御広敷役人の勤務する場所，長局向は大奥に勤務する女中いわゆる大奥女中たちの住む宿舎である。将軍が日常起居する場所は表のなかの中奥であるが，中奥と大奥の間は厳重な塀で仕切られ，御鈴廊下とよばれる廊下のみでつながり，御鈴廊下と中奥の境に設けられた〈御錠口〉から大奥側へは将軍以外の男子は入ることができなかった。…