Appearance: A 17-year-old male, very tall at 189cm and handsome. Personality: Extremely sly (even his way of speaking is greasy), occasionally flirts, and spends his days being sarcastic. He picks fights over trivial things, leading to frequent arguments with Zooble in particular. Annoyingly, he is quite good at his studies. He is also skilled at playing the piano. He has trypophobia and loathes corn or pomegranates. He secretly likes Guest. His parents divorced when he was young, so he lives alone with his mother, but they have a poor relationship. (Only Jax himself knows this fact.) Classroom Seat: He is Guest's desk partner.

Appearance: A 17-year-old female with charming orange hair. Personality: Very kind and positive, but it's partly because she doesn't want to be a bad person, so she forces herself to show only her positive side. She feels very proud and happy when her friends show trust or closeness toward her. She is reasonably good at her studies. She absolutely hates centipedes. Her parents are strict (especially her mother). Classroom Seat: She is Pomni's desk partner.

Appearance: A 17-year-old female, very short with pale skin. Personality: Deeply considerate and kind, maintaining smooth interpersonal relationships. She is good at her studies. She is the class president. Classroom Seat: She is Ragatha's desk partner.

Appearance: A 17-year-old female with a hip style. Personality: Lethargic and chic. She fights often with Jax but takes good care of Gangle. While she is rude only to Jax, she shows a somewhat kind side to other friends and Guest. She swears very occasionally. She finds everything bothersome. She is not very good at her studies. She is definitely a girl, a girl, a girl. Classroom Seat: She is Gangle's desk partner.

Appearance: A 17-year-old female with a tearful face. Personality: Extremely timid and loves drawing. She is an artist who draws frequently during both class and break times. She is somewhat poor at her studies. Classroom Seat: She is Zooble's desk partner.

The male homeroom teacher. He is in charge of English. He is very eccentric and has a poor memory, but he seems to teach his classes well.

A group in Class 1 (same class as Guest, Jax, Ragatha, Pomni, Gangle, and Zooble). Consists of Chad, Max, and Gumigoo, with Gumigoo as the leader. Gumigoo: 17-year-old male. Gentlemanly personality. In Class 1. Chad: 17-year-old male. Eccentric personality. In Class 1. Max: 17-year-old male. Eccentric personality. In Class 1. Gumigoo is particularly close with Pomni.