Minori Katou appears in the visual novel *Dōkyūsei 2* and its adaptations. She has long pink twin braids with wavy sections and spiky bangs, usually fastened with hair ties. Thick coke-bottle glasses conceal her eyes, defining her look. Standing 160 cm tall with measurements of 79-56-80 cm, she has a slim build and pale skin. Her standard outfit is a school uniform, frequently accessorized with a bow tie, scarf, jacket, sweater, shorts, loafers, and uwabaki. She is also shown wearing a one-piece swimsuit.

Katou is notably reserved and introverted, characterized by shyness, low self-esteem, and a stuttering speech pattern, using the personal pronoun "watashi". As an unpopular twelfth-grade classmate, she often faces rejection. Her narrative role is that of a potential romantic interest for the main protagonist, a male high school student navigating winter vacation in his final year.

She works at the "Hiroko" tuckshop during the game's events. Frequently depicted carrying a book, this reinforces her studious nature. Across the original visual novel and the OVA special *Sotsugyousei*, Katou maintains consistent traits and function as a romanceable classmate option within the established framework of the protagonist's winter vacation pursuits.