OVA
Description
Hisako Arato hails from a family celebrated for their mastery of Chinese medicine (Zhōng Yī). Meeting Erina Nakiri in childhood, she vowed to dedicate her culinary talents to serving Erina as her "Empress," a pledge that solidified her role as Erina’s personal secretary. She meticulously manages Erina’s schedule and obligations, freeing Erina to focus on her culinary pursuits. Her family heritage deeply informs her cooking, specializing in health-focused medicinal cuisine.

She has short pink hair, initially styled with bangs reaching her eyebrows before being parted to the left. In her second year, she adopted a slightly shorter bob cut. She wears standard Tōtsuki Academy uniforms and a plain white chef’s coat during cooking, occasionally donning glasses for computer work. Her measurements are bust 80 cm, waist 56 cm, and hip 79 cm.

Intensely loyal and devoted to Erina, Hisako exhibits sharp organizational skills in overseeing Erina’s commitments. Early on, she displayed pride and a dismissive attitude toward others, often acting as Erina’s proxy in curt interactions. Her self-worth hinged entirely on her role as aide, culminating in profound distress after losing to Akira Hayama in the quarterfinals of the 43rd Annual Tōtsuki Autumn Election. This defeat triggered doubts about her worthiness as Erina’s secretary and friend. Heeding Sōma Yukihira’s advice, she shifted her perspective to strive for equality beside Erina rather than trailing behind. This change fostered a more approachable demeanor and an unexpected friendship with Sōma despite prior antagonism.

Her history includes defending her position as Erina’s secretary during middle school by defeating Nao Sadatsuka in a Shokugeki, which barred Nao from approaching Erina. Key involvements include accompanying Erina during Sōma Yukihira’s failed entrance exam, later witnessing his unexpected enrollment and vowing to expel him. She monitored Sōma’s activities, reported his successes to Erina, and supported Erina’s "Kitchen Expansion Project" targeting culinary clubs. At the Tōtsuki Friendship and Rapport Training Camp, she assisted Erina and cleared rigorous challenges, including an overnight-prepared surprise breakfast buffet. She competed in the Autumn Election preliminaries with a curry dish that highlighted her medicinal powders and spices, impressing judges. Her development concluded in transitioning from subordinate to friend, actively redefining her relationship with Erina beyond master-servant dynamics.