Satsuki Yotsuba, a student in Class 3-A at Mahora Academy, exhibits maturity beyond her years. She has short dark brown hair frequently styled in pigtails, brown eyes, and a slightly chubby frame, standing 156 cm tall with measurements of 86-76-87 cm. She wears the standard Mahora Academy uniform. Her defining passion is exceptional culinary skill. She serves as the school dining officer, participates in the cooking club, and co-manages the Chao Bao Zi mobile restaurant with Chao Lingshen, Satomi Hakase, Ku Fei, and Chachamaru Karakuri. Her driving ambition is to establish her own restaurant to bring happiness through food. Satsuki possesses a calm, gentle demeanor that fosters serenity. Her mere presence can de-escalate conflicts, even among aggressive martial arts students, earning her widespread respect across the academy. Figures like Evangeline A.K. McDowell acknowledge her realistic outlook. She speaks in a distinctive manner, depicted in the manga without speech bubbles. During key events, she demonstrates awareness of magical activities. She assists in rescuing allies from Chao Lingshen's underground complex, pilots the flying Chao Bao Zi vehicle to save Negi Springfield and Chao after their battle, and later supports Negi's efforts against the Mage of the Beginning. Her pactio (magical contract) abilities differ across adaptations: - In the manga, her artifact "Coqua Fabulosa" is a magical iron wok; rice cooked in it enhances physical abilities, and it functions as a combat weapon. - The *Negima!* anime grants her a magical version of the Chao Bao Zi to purify demons. - *Negima!?* depicts her in cosplay or armored forms wielding cooking-themed artifacts like a ladle or cleaver. After graduation, she studies in France and China before returning to manage Chao Bao Zi. Following Mahora Academy's expansion, the restaurant grows into an interstellar chain, with her flagship location remaining a gathering spot for former classmates. Her name means "fifth month" (May), matching her May 12 birthday. Koalas are frequently associated with her in background visuals and directly referenced in her *Negima!?* cosplay hat design.