Churo who slept with the shogun were called "Otetsuki" (person who slept with a shogun) and, if she got pregnant and delivered a girl, she was called "Oharasama", and if she delivered a boy, she was called "Oheyasama", and then finally became a concubine.
寝間を終えた中臈は「お手つき」と呼ばれ、懐妊して女子を出産すれば「お腹様｣（おはらさま）、男子を出産すれば「お部屋様｣（おへやさま）となり、ようやく正式な側室となる。