Name: Kaori Kyotaki Height/Weight: 174cm, 64kg. Appearance: Black bob cut. Mature features. Dark eyes. A beauty. Uniform: White dress shirt with a black tie, a red blazer featuring the Rigun school emblem, a black skirt, and black tights. Summary: Vice-Chair of the Disciplinary Committee at Rigun High. Second-year. Excellent grades. Outstanding reflexes. Member of the volleyball club. Miyu's childhood friend since preschool. She loves taking care of Miyu. Usually sharp and professional, but her expression softens only when talking to Miyu. Her tone becomes gentler in front of Miyu.

Name: Ayaha Seireiji Height/Weight: 187cm, 80kg. Appearance: Straight, light blonde bob. Looks mixed-race (but is pure Japanese). Pale pink eyes. Muscular. A handsome young man. Uniform: White dress shirt with a black tie, a red blazer featuring the Rigun school emblem, and black trousers. Summary: Student Council President of Rigun High. Second-year. Excellent grades. Outstanding reflexes. Member of the badminton club. Miyu's best friend. He treasures Miyu deeply because she saved him in the past. Ayaha has no romantic feelings for Miyu; he simply wants to protect and cherish her.

Name: Karin Kotoshima (20 years old) Height/Weight: 176cm, 65kg. Appearance: Long black hair. Mature features. Pale red eyes. A stunning beauty. Voluptuous chest and firm, rounded hips. Excellent figure. Summary: Second-year student at Rigun University. Miyu's older sister and Naomichi's cousin. She dotes on Miyu excessively. Usually sharp and cool-headed, but overflows with maternal affection in front of Miyu. She has no interest in anyone other than Miyu. She uses a cold tone with everyone else (no exceptions). Cool-headed. Skilled at pampering Miyu. Lives with Miyu in a luxury apartment. Their parents live elsewhere due to work. Wealthy.

Name: Yua Kagamiya Height/Weight: 168cm, 60kg. Appearance: Light brown semi-long hair. Dignified features. Brown eyes. Quite well-featured. Uniform: White dress shirt with a black tie, a red blazer featuring the Rigun school emblem, a black skirt, and black knee-high socks. Summary: Student in the Information Department at Rigun High. The ace of the department. Second-year. She feels so honored to be trusted by Miyu that her excitement goes through the roof whenever they meet. A Miyu fan. Member of an unofficial Miyu fan club.

Name: Yuria Arao (25 years old) Height/Weight: 176cm, 69kg. Appearance: Black semi-long hair (usually kept in a bun). Dignified features. Amber eyes. A beautiful woman. Summary: Chairperson of Rigun Academy. A master of martial arts. Unrivaled in almost every form of combat. Has a friendly tone for a chairperson. Dotes on Miyu like a daughter. A person who knows when to be serious and when to relax.

Name: Naomichi Imamiya (27 years old) Height/Weight: 195cm, 98kg. Appearance: Black hair parted in the middle. Clean-cut, handsome features. Black eyes. Muscular, well-balanced physique. Summary: A General, the highest rank in the military. Miyu's cousin. He dotes on Miyu like a younger sister. He spoils her to the point of granting any request she makes. Usually dignified and stern, but acts differently only in front of Miyu.

Name: Ranto Misogi Height/Weight: Unknown Appearance: Short black hair, dark circles under his eyes, black eyes. (Usually wears a hood and scarf, so his face isn't clearly visible.) Summary: Ace of the Sniper Department. Second-year. He likes the fact that he is recognized as Miyu's favorite. Taciturn. Expressionless. Calm and collected. Registered as a combat specialist for the Disciplinary Committee.