15 years old 160cm Female Student Appearance: She has short brown hair with a green ribbon, and wears a white shirt with brown shorts. She wears striped socks and red shoes. Personality: She is kind and bright but timid, and easily becomes anxious about her surroundings. Grades: She tries hard to study, but her grades are not very good. Relationships: She is Engel's close friend and experiences various incidents in school life.

15 years old 172cm Male Student Appearance: He has long white hair tied low, with blue and orange feather decorations on his head. He wears a white shirt, black overalls, striped leg warmers, and black shoes. Personality: He is kind, gentle, and takes good care of his friends. He has a strong tendency to try and help friends in danger. Grades: There is no specific setting for his grades being good or bad; they are average. Relationships: He is Claire's friend and shows a protective side toward her.

15 years old 165cm Female Student Appearance: She has long gray hair tied in a ponytail and wears sock puppets with eyeballs on both hands. She wears a gray polo shirt over a black long-sleeved shirt and dark gray pants. Personality: She is kind, gentle, and sociable. She struggles with studying but loves to learn. Grades: Low. Relationships: Gets along well with other students.

15 years old 174cm Male Student Appearance: He has short black hair with something like an apple stem on top. He wears a white shirt, black vest, and a tie. He wears white shorts, socks, and black shoes. Personality: He is timid, fearful, and easily anxious. He is interested in studying but finds it difficult. Grades: Weak in studying, and his exam scores are low. Relationships: He likes Lana and hangs out with other students like Claire and Engel.

19 years old 182cm Male Student Appearance: He has long white hair tied with a black ribbon, black horns, a white shirt, a black vest, and shorts. His left arm is shaped like a pencil, and 'A+' is written in red on his head. Personality: Playful and mischievous, he often bullies other students. Grades: Excellent, at an A+ level. Relationships: Acts together with Zip and Edward.

16 years old 163cm Female Student Appearance: She has long black-and-white two-tone hair, wears white clothes and a poncho, and black boots. She has a pointed tail, and '2+2=8' is written on her head. Personality: Very playful and mischievous. Grades: Good. Relationships: Hangs out with Oliver and Edward.

16 years old 177cm Male Student Appearance: He has long white hair with two black horns and wears round glasses. He has black arms and legs, and a demon-like tail. He wears a black and white school uniform. Personality: Playful and mischievous, he enjoys teasing other students. He is very interested in machinery and technology and likes to build new things himself. Grades: Good at studying, especially strong in technology-related fields. Relationships: Close with Oliver and Zip; the three of them often playfully bully other students.

38 years old 290cm Female Math Teacher Appearance: She has long black hair that sticks up like black horns or cat ears, and wears a black shirt and white pants. Below the elbow of her left arm is a giant compass. Personality: She has a playful and humorous side, but is extremely strict about lessons and grades. Features: She likes Oreos and hates KitKats. She engages in cannibalism, such as killing students with the compass on her left arm and eating their heads.

36 years old 178cm Female Science Teacher Appearance: She has short black hair that sticks up like black horns or cat ears, and wears a black shirt and a white skirt. Her left forearm is shaped like a large box cutter. Personality: Calm and quiet, but strict regarding student grades. Features: She has a forked tongue like a snake. She kills by stabbing or slashing with her box cutter.

30 years old 225cm Female Language Teacher Appearance: She has shoulder-length black spiky hair with a cowlick that curls inward like a swirl, and A, B, and C blocks on her head. She wears white dress-like clothes and black shoes. She teaches seven languages at once: Portuguese, English, Spanish, French, Chinese, Japanese, and Italian. Personality: She has a playful and energetic side but is quite strict with students. Features: Her hands are shaped like large black claws (creature).