Yukiyo Misaki

According to Mei, Kirika doesn't really care about her or what she does, is indifferent towards her school life, and apparently treats her like one of her dolls. She's described as a "strange woman who isolates herself in the studio upstairs." Mei believes that Yukiyo, along with Kotaro, initially cherished her more than most people would have, and that they did everything she could for Mei when she lost her left eye to disease, with Yukiyo giving Mei a prosthetic eye to replace it. Mei was grateful for everything Yukiyo did for her early on, but Yukiyo at some point started to project her unborn child in Mei, which led to Mei feeling like she was treated as nothing more than a replacement. It is believed that Yukiyo shuts herself in her workshop and creates all of her dolls because of the heartbreak she has for her unborn child. Mei also said that when she asked Kirika if she could see her real mother, she was very upset and angry. Yukiyo didn't allow Mei to see her real mother and sister, but Mei and Misaki, her twin sister, were meeting in secret. She bought Mei a mobile to be sure she doesn't go to see Mitsuyo. In the OVA, Mei said that Yukiyo feels guilty for taking away her twin sister's baby girl. She fears Mei might run away to live with Mitsuyo; because of that, she doesn't allow Mei to see Misaki. She is somewhat friendly with Kōichi and is intrigued that any boy, let alone him, has an interest in dolls, and permits him to stop by anytime.

left|thumb|Kirika's appearance in the manga. Kirika is a young woman with long, dark brown hair, which is placed in a blue ribbon at the back of her head. She has brown eyes and wears a white and blue shirt with a band, with a green shirt underneath. She wears black, three-quarter pants with orange shoes. In the manga, she has black hair and black eyes, but the same physical appearance. The only difference is that her eyes in the manga are sad, hollow, droopy, and look like the eyes of a sick woman, making her look older. In the film, Yukiyo's appearance is the same as she had in the manga, but she has short hair and looks a little bit younger.