Gin Dojima enrolled in Tōtsuki Culinary Academy's 69th Generation, residing at Polar Star Dormitory after excelling in its entry exam. He forged a formidable partnership with dormmate Jōichirō Saiba, dominating Shokugeki tournaments to secure resources and financial autonomy for Polar Star. Their first-year Autumn Election finals concluded without resolution. Gin claimed the Elite Ten Council's 6th seat by year's end without taking Promotion Exams, rising to 1st seat by his third year while Jōichirō held 2nd. During Tōtsuki's peak era, Jōichirō earned selection for BLUE but vanished pre-competition after Gin discerned his emotional distress. Gin graduated with Tōtsuki's highest recorded exam scores. Rejecting over 800 global job offers due to unresolved guilt over Jōichirō's departure, Gin accepted Director Senzaemon's offer at Tōtsuki Resort, the academy's five-star Training Camp venue. Motivated to mentor students and prevent similar struggles, he ascended to General Head Chef and Board of Directors, elevating the resort's worldwide reputation. Years later, Jōichirō contacted him, revealing his return to Japan, marriage, and son Sōma Yukihira. Though frustrated by Jōichirō's sporadic updates, Gin acknowledged his recovery. Gin possesses a muscular physique, sharp eyes, sideways-V eyebrows, and short brown hair, typically wearing formal business attire. He maintains fitness through rigorous bathhouse workouts. His leadership treats students as resort staff, demanding accountability and rejecting failure. He prioritizes demonstrable effort over rhetoric and exhibits keen perception, detecting hidden stagnation in individuals like alumnus Kojirō Shinomiya. While strict, he supports students displaying creativity, courage, or hospitality. Traditions matter deeply—he annually sends Obon and Shōgatsu cards to Polar Star caretaker Fumio Daimidō. Hosting the 92nd Generation's Training Camp under strict standards, Gin noted Sōma Yukihira's early task completion in the bathhouse—a feat previously achieved only by Satoshi Isshiki. Sōma's surname sparked recognition of Jōichirō's restaurant, though the link remained unclear initially. Later, Gin intervened when Shinomiya expelled Megumi Tadokoro, orchestrating an unofficial Shokugeki where Megumi served as head chef and Sōma as sous-chef to prove her independent merit. After judges ruled against Megumi, Gin symbolically voted for her dish, criticizing Shinomiya's creative stagnation. This prompted Shinomiya to reconsider Megumi's hospitality-driven cooking, reinstating her. Gin advised Megumi to retain hospitality as her culinary core. In subsequent academy conflicts like the Regiment de Cuisine against Azami Nakamura's regime, Gin backed the rebel faction, leveraging institutional authority and mentorship principles consistent with his established traits.