Satsuki Yotsuba attends Mahora Academy as a student in class 3-A, recognized among the few mature students with clear goals and methods. She possesses exceptional culinary skills and operates the Chao Bao Zi mobile restaurant, a neutral space where both staff and students avoid conflict out of respect for her popularity. Her appearance features a slightly chubby build, short black hair in pigtails, and brown eyes; she typically wears the Mahora Academy uniform with measurements of 86-76-87 cm (approximately 34"-30"-34"). Her birthday is May 12, aligning with her name "Satsuki," meaning "fifth month" for May. Satsuki exhibits a gentle, diligent personality, commanding universal respect within Mahora. Evangeline A.K. McDowell, who dismisses most classmates as "air-headed beasts," acknowledges Satsuki's realistic outlook, marking her as the most respected among Negi's students. Her mere presence fosters calm, allowing her to effortlessly defuse confrontations, even among martial artists. She aspires to open her own restaurant to bring joy through food. Her manga dialogue is distinctively presented without speech bubbles. Koalas occasionally appear in background scenes during her manga and anime interactions. Her abilities center on cooking mastery, demonstrated in the Cooking Club, as school dining officer, and operating Chao Bao Zi. Her dishes generate significant revenue funding Chao's plans and earn praise from figures like Evangeline. She pilots the flying Chao Bao Zi to rescue allies during critical battles. She is privy to secrets involving magic and Chao's identity, aiding escapes and participating in pivotal missions. Her Pactio artifacts vary: the manga grants "Coqua Fabulosa," a magical wok enhancing physical prowess via meals that doubles as a weapon; the Negima! anime provides demon-purifying abilities through feeding; Negima!? offers squirrel-themed or Iron Chef-inspired variants, including a ladle artifact and an orange chef's outfit with cleaver and wok. Narratively, she assists Takamichi and later Misora and Cocone during Chao's arc, culminating in piloting Chao Bao Zi to save Negi and Chao post-battle. In the epilogue, she studies culinary arts in France and China before managing Chao Bao Zi. This expands into history's first interstellar restaurant chain after Mahora's orbital elevator opens public access, with her flagship location remaining a gathering spot for former classmates. In spin-offs like "Kuro Arashi: The Black Storm," she appears as a protagonist, maintaining her core traits and piloting skills. Merchandise, such as uniform-version figurines, reflects her recognizable design.