Nakajima's mother is a minor supporting character in Poco's Udon World. She is the mother of Shinobu Nakajima, Souta Tawara's childhood friend. Her background is not extensively explored, but she is a resident of Kagawa Prefecture. Her personality is hinted at through her son's comments: she nags him about getting married, suggesting she is a caring but perhaps insistent parent who wants to see her son settle down. Her primary motivation appears to be a typical maternal desire for her son's happiness and future stability. In the story, she seldom appears on screen; her presence is felt mostly through Shinobu's conversations with Souta, where he mentions her nagging. She has no significant development or notable abilities, serving as a background character that adds depth to Shinobu's family life. Her key relationship is with her son Shinobu, and she may also interact with her husband, Nakajima's father, who is also a minor character. Though her role is small, she contributes to the slice-of-life atmosphere of the series by representing the ordinary concerns of family life in a small town.