Yūki Yoshino is a second-year student at Tōtsuki Culinary Academy residing in the Polar Star Dormitory. Born September 15th in Japan, she stands 1.55 meters tall with amber hair often styled in twin buns and teal eyes. Outside her uniform, she has been seen in casual dorm wear: a pink-and-white striped shirt under a light blue sweater, violet shorts with white cuffs, and orange slippers. Yūki is characterized by her cheerful, energetic, and childlike enthusiasm. She acts as a social catalyst in Polar Star, frequently engaging in gossip and showing keen interest in peers' romantic lives. She habitually adds "-cchi" to the names of people she likes, such as "Nikumi-cchi." While generally lighthearted, she exhibits strong loyalty to friends and displays intense emotional reactions, from exuberant joy to visible distress or anger. She is particularly sensitive about her physical development compared to other female characters. Her culinary specialty is wild game ("gibier"). She breeds and cares for animals like rabbits, ducks, deer, and wild boars in her dorm room, aspiring to develop a proprietary Polar Star chicken breed. During the 43rd Autumn Election preliminaries, she prepared a Duck Cutlet Wild Game Curry with oranges, praised for ingredient quality and flavor complexity, though she did not advance further. Yūki enrolled in Tōtsuki's 92nd Generation, witnessing Sōma Yukihira's declaration to become the best during orientation. She joined Polar Star before Sōma's arrival; her tendency to keep animals caused disruptions during his introduction. She quickly integrated into dorm life, participating in communal activities like welcoming parties and garden maintenance. Key developments include the Tōtsuki Friendship and Rapport Training Camp, where she demonstrated resilience. After Sōma risked expulsion protecting Megumi Tadokoro, Yūki confronted him with a physical rebuke, emphasizing her commitment to group cohesion. Later, during the camp's breakfast buffet challenge, she overcame sleep deprivation to successfully serve 200 dishes, showing palpable relief when all Polar Star residents survived. In the 43rd Autumn Election, Yūki secured a participation slot after initial uncertainty. She actively supported peers like Megumi during matches, leading cheer squads and creating banners while showcasing her wild game expertise. During Azami Nakiri's regime and the Regiment de Cuisine conflict, Yūki aligned with the rebel faction opposing Central. She was among the Polar Star members temporarily confined during the final showdown but remained a vocal supporter of the resistance. Within Polar Star, Yūki views Ryōko Sakaki as an older sister or maternal figure, often seeking her comfort. She offers sisterly encouragement to Megumi Tadokoro, helping bolster her confidence. Her overarching narrative motivation is preserving the unity of Polar Star's 92nd Generation throughout their academic journey.