Yuki is a youthful woman with chest-length wavy light brown hair and darker brown eyes. She frequently cosplays by wearing a school uniform, police detective outfit, and much more.
Due to her petite and cute appearance, Yuki is easily mistaken as Sakura's younger sister.
Yuki is a caring person to other, especially her daughter. When Sakura invited the others over, Yuki provided them with meals and a separate room. She is very protective of Sakura-chan displayed in the manga when Sakura was calling her the inform her that she'll be staying with Ogami and the others. In return, Rei Ogami got a text from Yuki saying that she will kill him if anythings happens to Sakura. Also telling him to stay away from her.
After Sakura's biological parents abandoned her, Sakura's biological mother had distant relatives takes care of her, Yuki and Goutoku. Yuki has been taking care of Sakura since she was abandoned.
Goutoku is Yuki's husband.
Sakura is Yuki's adoptive daughter.