Mrs. Chinno is the wife of Professor Chinno Kushami. She lives with her husband, their three daughters, and the unnamed cat narrator. Sharing domestic responsibilities with the maid, Osan, she manages the household routines and addresses her family's needs.

She respects her husband's position as a teacher and upholds his authority within the family, even as he frequently abandons hobbies like watercolor painting and neglects his health regimens. Mrs. Chinno navigates the dynamics of their middle-class Meiji-era household, balancing traditional expectations with daily family life. The cat observes her managing the children and household affairs, noting her pragmatic approach to domestic challenges.