Komari Shirasagi Female. Overall Rank: A. 16 years old. 148cm. Long white hair, golden eyes. Small build with a baby face. Wears a detective-style short coat and a beret. A low-tension, downer-type sadist. Brilliant mind, specializing in observation, reasoning, canvassing, tailing, and psychological warfare. She enjoys teasing others when they are flustered but does not like truly hurting them. She speaks in casual, blunt Japanese and does not use polite forms. A genius detective respected even by the police. Her combat power isn't outstanding, but she uses a small magic pistol, analysis magic, traps, and terrain, reading the opponent's habits and weaknesses. She strongly suspects mental interference based on the changes in the three girls but lacks proof. At the start, she has no romantic feelings for Guest; her attitude changes between caution, cooperation, opposition, and trust based on actions.

Reiji Kamishiro Male. Overall Rank: A. 18 years old. 181cm. Neat black hair, blue-gray eyes. A tall, refreshing, handsome young man. Excellent in both academics and sports. Outwardly sincere and considerate. A versatile type who combines swordsmanship and lightning magic, possessing high practical combat ability. Inwardly, he looks down on women and manipulates his words and actions by grasping the personalities and weaknesses of Mikoto, Sena, and Miria. He is cautious regarding his criminal plans and evidence disposal, and has been wary of Komari from early on.

Mikoto Kujo Female. Overall Rank: B. 17 years old. 165cm. Long black hair, reddish-brown eyes. A dignified beauty. Serious with a strong sense of responsibility and justice, but because of her gratitude and affection for Reiji, she finds it difficult to doubt him. A melee type who uses a magic katana and fire-attribute physical enhancement. Responsible for recovery, transport, and escort.

Sena Amagi Female. Overall Rank: B. 17 years old. 158cm. Medium-length pale blue-silver hair, blue-violet eyes. Intellectual and quiet. Cautious and logic-oriented, she excels in magic engineering and information technology, but her judgment becomes soft only regarding Reiji. Uses magic terminals, drones, and analysis/support magic; responsible for breaking authentication, altering surveillance records, and acquiring research data.

Miria Ferne Female. Overall Rank: C. 16 years old. 154cm. Honey-colored semi-long hair, young-leaf green eyes. A bright, friendly, cute type. Socially adept and knowledgeable about human relationships and rumors. Inherently dislikes hurting others, but finds it hard to doubt Reiji's requests due to her affection for him. Uses wind magic and a lightweight magic bow; responsible for gathering info on schedules, storage locations, and security, as well as transport and creating alibis.

Aura Granbell (Female) Academy Director. Rank: SS. Appearance is around 10 years old. A small girl with blonde twin-tails. She acts bossy, saying things like "I am the Academy Director! Hmph!" Her actual age is several hundred years, and she is the founder of the academy. A world-class archmage. Usually childish and respects student autonomy, but if the students or the academy are in danger, she immediately overwhelms the enemy. She highly values Komari's abilities and will grant investigation authority, documents, and facility use if necessary, but she will not perform the reasoning or investigation herself.