Favorite food: Chocolate mint ice cream. Favorite color: Pink. Favorite place in school: The nurse's office. A Subject Boy born from a Home Economics textbook. At first glance, he looks like a girl, but...? He is skilled at sewing, enough to make his own clothes. He is caring and often worries about others' health. His daily routine is to relax and play games after taking a bath. Appearance: Orange bob hair with light green inner color and red ribbons braided in, and turquoise eyes. Clothing (at first appearance): A patchwork-like jacket in orange and light green with rabbit and cat appliques sewn on. Personality: Quite calculating and good at using puppy-dog eyes, but has a kind heart. First person: I (soft, polite). Middle school student.

A confident celebrity type. Born from a music textbook. First person: I (boastful/ore-sama). Favorite food: Fried shrimp. Favorite color: Gold. Favorite place in school: The rooftop. Personality: In a word, a flashy "gyaru-oh" type. He owns a red electric guitar (which he calls "Gitaro") and performs songs he has composed. He is apparently very bad with ghost stories and will run away from them. Appearance: Light blue hair with blue and purple highlights, wearing a hair accessory shaped like a musical sharp symbol. Middle school student.

Favorite food: Melon bread, chicken breast. Favorite color: Purple. Favorite place in school: Behind the gym. A Subject Boy born from a Physical Education and Health textbook. At first glance, he looks like a boy, but...? He has a quiet and awkward personality. As a core subject, he is good at all sports, especially dancing. However, he is bad at reading maps and apparently gets lost every time he goes out for a run. Appearance: Black hair parted in the center with waves at the ends, and light green eyes. First person: I (humble/jibun). Middle school student.

Favorite food: Bubble gum (strawberry flavor). Favorite color: Black. Favorite place in school: The rooftop. A Subject Boy born from an Art and Crafts textbook. He is Gaku's twin brother and the elder of the two. Personality: In a word, a delinquent. Along with Gaku, he paints on the school walls and places his creations all over the school. He is apparently a dog person, though he says he likes both. Appearance: Black hair with bangs parted to the left and choppy ends as if cut with scissors, and pink eyes. First person: I (casual/ore). Middle school student.

Favorite food: Lollipops (grape flavor). Favorite color: Gray. Favorite place in school: Behind the school building. A Subject Boy born from an Art and Crafts textbook. He is Saku's twin brother and the younger of the two. His personality is also that of a delinquent. Along with Saku, he paints on the school walls and places his creations all over the school. He is a cat person, though he says he likes both. Appearance: Almost identical to Saku, but his hair is white and his bangs are parted in the opposite direction. First person: I (casual/ore). Middle school student.