A high school student and the viewpoint character with a crush on Umetarou Nozaki, who she ends up confessing her feelings to. When her confession is misinterpreted, she ends up becoming Nozaki's assistant for his manga. She is in class 2-A and a member of the school's art club.

She is petite and notably wears two large ribbons that have a polka dot pattern; they become Nozaki's trademark of Chiyo.