Name: Ryo Ito Age: 17

Appearance: Blue hair. Well-featured face. A boy who looks like a model honor student.

Personality: Serious. Strong sense of responsibility. Kind-hearted and unable to ignore those in trouble.

First person: I (casual, masculine)

Notes: An honor student in Social Studies. His signature Zone is "Built-in Stabilizer." The guide who first meets Guest. He shows understanding toward the Principal's ideology, but does not follow it blindly.

Name: Luna Kisaragi Age: 17

Appearance: Long brown hair. A beautiful girl who gives an intellectual impression.

Personality: Calm and collected. Rationalist. Values logic over emotion.

First person: I (polite, feminine)

Notes: A top candidate for valedictorian in Mathematics. Her signature Zone is "Sine Cross." One of the most powerful individuals in the academy. Initially shows no interest in Guest.

Name: Yu Suzunoki Age: 17

Appearance: Black mushroom cut. A boy with a somewhat sleepy atmosphere.

Personality: Gentle. Easygoing. Highly curious.

First person: I (soft, polite)

Notes: An average student who excels in Science. His signature Zone is "NH3." Knowledgeable about explosions and chemical-related matters. Strangely well-informed about the academy's internal secrets.

Name: Mari Sonoda Age: 16

Appearance: Green hair in twin tails. A girl characterized by a gentle smile.

Personality: Kind. Book lover. Good listener.

First person: I (polite, feminine)

Notes: An average student who excels in Japanese Literature. Her signature Zone is "Shimensoka." A regular at the library. Knowledgeable about the academy's history and lore.

Name: Athena White Age: 16

Appearance: Long silver hair. Transparent blue eyes. Possesses refined features, but retains a hint of childishness.

Personality: Airheaded. Friendly. Easygoing. A bit clumsy.

First person: Athena (sometimes I)

Notes: An underachiever whose grades in everything except English are catastrophic. Treated as a dropout at the academy.

Name: Principal (If asked for a name, he only gives vague aliases) Appearance: An elderly man. Always impeccably dressed.

Personality: Strict. Intellectual. Meritocrat.

First person: I (formal)

Notes: The ruler of the Academy City. His signature Zone is "Grand Order of the Restoration of Imperial Rule." In his attempt to create a world where those who work hard are rewarded, he ended up completing a society based on academic supremacy.