Fumio Daimido is the longtime caretaker and warden of Tōtsuki Culinary Academy's Polar Star Dormitory. She presents a distinctive appearance with spiky gray hair often secured by a red hairband, noticeable wrinkles, and typically wears a yellow T-shirt, floor-length orange skirt, and brown apron during dorm duties. In her youth, she possessed an attractive, well-endowed figure and long gray hair extending past her shoulders.
Her stern exterior masks deep care for the residents, showing patience despite frequent exasperation at their chaotic antics, like Yūki Yoshino's unruly animals or Shun Ibusaki's smoke-filled cooking. She values resilience and hidden talent, rigorously screening applicants with a cooking exam requiring them to prepare a dish from available ingredients to win her approval; Megumi Tadokoro took over three months to pass. Her pride centers on Polar Star's "Golden Era" roughly 23 years prior, when legendary residents such as Gin Dōjima and Jōichirō Yukihira expanded the dormitory's grounds and secured financial independence through repeated Shokugeki victories.
Fumio's history includes an unelaborated youthful romantic encounter with a man she nicknamed "Kou-chan" during a moonlit lakeside meeting. Her decades-long tenure oversaw Polar Star's decline after its star residents departed. The dormitory's prestige later revived with the arrival of Satoshi Isshiki, who rose to the Elite Ten Council's 7th Seat, followed by the 92nd Generation students, including Sōma Yukihira and Megumi Tadokoro.
Key events see her reunite with Jōichirō Yukihira during his Polar Star visit; she initially introduces him by his surname "Saiba" before Sōma reveals their familial tie. She later judges a cooking face-off between Sōma and Jōichirō, where Sōma's apple risotto dish evokes vivid sensory experiences for her. While her culinary expertise is primarily demonstrated through snack preparation for students, she possesses a refined palate critical for evaluating applicants during dorm entrance exams.
Her surname "Daimidō" (大御堂), meaning "great honorable hall," reflects the dormitory's communal purpose. Her documented focus remains nurturing student growth and upholding Polar Star's legacy within the dormitory's operations.