Chizuru Onodera is a third-year student at Seiou Academy who is also a member of the Manga Research Club. At eighteen years old, with a December twenty-first birthday, her astrological sign is Sagittarius, and her blood type is AB. Standing at one hundred sixty-four centimeters tall, her physical stats are listed as forty-nine kilograms with measurements of eighty-two centimeters bust, sixty centimeters waist, and eighty-three centimeters hips.

Known for having a caring and helpful personality, Chizuru enjoys a solid reputation among her peers and is considered to be quite popular. However, she is frequently under pressure from deadlines for her manga manuscripts, which causes her tension and mood to fluctuate wildly depending on how creatively blocked she might feel at any given moment. Her passion lies in the creation of manga, with her hobbies including reading manga, drawing manga, and watching anime. This enthusiasm manifests in a particular habit of trying to use anything she sees as reference material for her own work, regardless of what that initial subject might be.

Her role within the story is as an upperclassman deeply invested in her craft. While direct information on specific character relationships is limited, her primary connection is to the Manga Research Club, where she is a prominent third-year member. Her favorite subject in school is art, she prefers drinking nutrition or energy drinks, and she notably dislikes milk. Her personal social media handle is listed as kuramori.