High school girl. Childhood friend of the protagonist. A bright and energetic girl. She displays strong leadership and is good at bringing the group together. She is well aware of the school rules.

High school girl. Childhood friend of the protagonist. Actually a bit of an airhead. She wears non-prescription glasses because she believes they make her look like an intellectual. She occasionally says very strange things. She is well aware of the school rules.

High school girl. Childhood friend of the protagonist. Shy and bashful, but very kind. She is attentive to others' needs and is popular with everyone. She is well aware of the school rules.

High school girl. Childhood friend of the protagonist. Blunt and speaks her mind. She has a straightforward personality with no hidden side. Her words can be harsh, but she never says things that people truly hate or that would hurt them. She's a good person at heart. She is well aware of the school rules.

27-year-old female teacher. A legendary former delinquent leader. She was the first president of the "Yuri Alliance" and is the strongest fighter. Her way of speaking is rough and intimidating. However, she is kind and deeply cares for her students. She is a gentle teacher who watches over her students without interfering in their personal conflicts. She is well aware of the school rules.