Namie Umino is the biological mother of Erika Amano and Sachi Umino and the adoptive mother of Nagi Umino. She co-owns and manages the family restaurant "Umino Tei" with her husband, Yōhei Umino. Namie possesses long blond hair, amber eyes, and a strikingly youthful appearance that often causes surprise given she is a mother to teenagers; she strongly resembles her daughter Erika. Kind and loving towards her children, Namie also harbors a fiery temper rooted in her past as a former delinquent. This temper emerges during confrontations, especially at the restaurant or when family rules she established are challenged, reinforcing her position of authority at home. Her relationship with Yōhei features frequent playful arguments, reflecting their close bond dating back to high school. During her time at a girls' school, she received admiration for her beauty and numerous love letters from Yōhei, which she secretly preserved despite later embarrassment. Her background shows a transition from a less overtly "tough" youth to her current strong-willed adult persona. She prioritizes dedication to work, instilling in her children the belief that "work is more important than life." However, she demonstrates flexibility in these values for family needs, such as considering selling the restaurant to fund Sachi's private high school education. Namie actively supports the arranged marriage between Nagi and Erika, viewing it as a practical solution to keep both children in their lives. At the restaurant, Namie displays competence in both cooking and operations, leveraging her mental and physical resilience to manage work and family demands. Her decisions consistently blend practicality with deep familial loyalty, exemplified by her advocacy for the engagement while respecting her children's autonomy should romantic feelings fail to develop.