Yuki Yoshino is a second-year student at Tōtsuki Culinary Academy living in the Polar Star Dormitory. She possesses a petite frame, amber hair usually styled in twin buns, and teal eyes. Her hair reaches the bottom of her head when down, except for bangs barely touching her eyes; it grows longer over four months. She wears the standard Tōtsuki seasonal uniform and a white chef's outfit with black trimmings for cooking. During the 43rd Annual Tōtsuki Autumn Election Semifinals, she wore a happi coat over her summer uniform while cheering. Cheerful and energetic, Yuki acts as Polar Star's mood maker, displaying a spunky, competitive spirit and readily showcasing her cooking skills if challenged. She enjoys teasing others and gossiping, particularly about romantic hints, adding "-cchi" to the names of those she likes. Her moods swing strongly between worry, anger, or sadness. Loyalty to friends defines her, with a primary aspiration to keep the entire 92nd Generation of Polar Star together. This dedication leads her to slap Soma Yukihira for reckless actions risking expulsion. She is self-conscious about her body and reacts negatively to comparisons with more developed peers. Her cooking specialty is wild game like poultry, rabbit, and deer. She houses ducks, rabbits, and other birds in her Polar Star room, occasionally leading to escapes and the dorm mother's displeasure. She entered the dormitory before the series' start by passing Fumio Daimidō's entrance exam with a satisfactory dish. She attended the 92nd Generation Orientation Ceremony with Ryōko Sakaki and later searched for the missing Megumi Tadokoro. She participated in welcoming Soma Yukihira to Polar Star, witnessed his duel with Satoshi Isshiki, and received his Revamped Mackerel Onigiri Chazuke, expressing astonishment at its juiciness. For the Tōtsuki Friendship and Rapport Training Camp, Yuki and other Polar Star residents prepared rigorously. She completed all assignments, including preparing 50 dinner meals and an eight-hour, sleepless buffet-style breakfast challenge requiring dish selection and testing. When Soma and Megumi went missing during the camp, she frantically searched for them and later slapped Soma for recklessly challenging alumnus Kojirō Shinomiya. She cried in relief when the entire Polar Star group survived. Initially disappointed about not being named among the first participants, Yuki later secured a spot among the 60 students selected for the 43rd Tōtsuki Autumn Election. She joined the cheer squad to support Megumi during the semifinals and attended a feast at Polar Star celebrating election participants, where she met Jōichirō Saiba. Yuki is deeply involved in dormitory activities like parties and celebrations. She leads Polar Star residents in cheering for peers during competitions and maintains close relationships with fellow dorm members, consistently emphasizing unity and pushing to keep the group intact through challenges.