Maruko's mother is named Sumire Sakura. She is a housewife who manages the household and takes care of the daily needs of her family. She is a down-to-earth person who is skilled at cooking and handles all household chores competently. She is particularly adept at needlework and embroidery. Most of the time, she scolds Maruko for her laziness, forgetfulness, and careless behavior, but she usually forgives Maruko with a warm heart when Maruko apologizes unreservedly. Her motivations are rooted in her desire to raise her children to be responsible and responsible individuals, often urging Maruko to study hard and listen to her grandparents. In the story, she serves as the primary disciplinary figure in the Sakura household, balancing her caring nature with the need to correct Maruko's frequent mistakes. Her key relationships include her husband Hiroshi Sakura, her elder daughter Sakiko, and her younger daughter Momoko, known as Maruko. She is often seen worrying about Maruko's matters and also acts as a confidante to her. She shares a frugal nature with her mother-in-law and becomes frantic with her sister during big sales. Her development as a character is shown through her consistent efforts to balance personal desires with loyalty to her family, maintaining a caring and responsible demeanor throughout the series. Among her notable abilities are her excellent cooking and her proficiency in sewing and embroidery. Her treasure is an opal ring, and her favorite foods include steamed bean-jam buns and pan-fried noodles.