Rindou Kobayashi enrolled in Tōtsuki Culinary Academy's 90th Generation, encountering Eishi Tsukasa during their first middle school year. His perfectionism intrigued her, prompting her to forcibly befriend him. By her second high school year, she claimed an Elite Ten Council seat, advancing to Second Seat by her third year. She participated in selecting competitors for the 43rd Annual Tōtsuki Autumn Election. Standing 171 cm tall, she possessed scarlet-red hair obscuring her left eye and cat-like features—yellow eyes with slitted pupils and pronounced canine teeth. She typically wore a beige sweater beneath her Tōtsuki uniform jacket, sleeves pulled over her palms. During culinary tasks, she tied her hair in a ponytail and wore a dark-blue chef's jacket. Her personality radiated extreme whimsy and curiosity. She prioritized personal interests over duties, sampling all 120 Moon Banquet Festival stalls instead of operating her booth and delegating paperwork to Tsukasa. She maintained a playful demeanor, frequently teasing Terunori Kuga after his losses to Sōma Yukihira. Despite her carefree attitude, she remained neutral toward Central's ideology after supporting Azami Nakiri's directorship solely for entertainment. Specializing in exotic ingredients, she traveled globally as the "Rare Ingredients Master," sourcing unconventional components like alligators and insects. Her knife skills enabled precise butchering, showcased when she swiftly processed an alligator during a demonstration. Extensive ecological knowledge from field research allowed her to discover new species for culinary use after verifying environmental safety. Her cooking emphasized experimentation over restrictive techniques. During key events, she facilitated Sōma's tasting of Tsukasa's cuisine and voted for Azami's takeover. She openly criticized Etsuya Eizan's underhanded tactics during his Shokugeki against Sōma. She opposed expelling rebel-aligned Elite Ten members and reluctantly wore Central's badge during the Survivor Purge. Her loyalty wavered upon witnessing Central's impact on culinary businesses. After the rebels' Regimental Shokugeki victory, she graduated alongside third-year peers. Post-graduation, she traveled internationally with Tsukasa to research rare ingredients, occasionally assisting at Tokyo's SHINO'S restaurant.