Kazuma Sakagami

Biodata

Feature	Value
Name	Kazuma Sakagami (坂上数马)
Gender	Male
Affiliation	Advanced Nurturing High School; Class 1-C
Occupation/Role	Class 1-C homeroom teacher
First Appearance	Chapter 1

Appearance

Sakagami is an adult teacher who wears glasses and frequently adjusts or removes them during tense classroom exchanges. He keeps a lens cloth in his breast pocket. 1 3

• Glasses are a prominent part of his mannerisms; he uses cleaning them as a pretext to ignore incidents. 3
• His lenses are repeatedly described as catching white glints when he is concealing intent or offering indirect guidance. 12 14

Personality

Sakagami is highly pragmatic and self-interested. While he presents himself as Class 1-C's protector, his support is tied to the class reaching Class A and securing the substantial bonus that would bring him; he openly prioritizes this outcome over conventional teaching ethics. 22 23

He recognizes intelligence quickly and is impressed by Prince Ganlongdao's ability to infer school rules from limited information. Sakagami is constrained in what he can disclose directly, so he often communicates through implication, phrasing, and deliberate gestures. 1 12 14 15

His patience is limited by classroom disorder and Class 1-C's loss of Class Points. Although he initially tolerates student violence and power struggles, he intervenes when Ryuen Kakeru's absence threatens the class's prospects. 6 22 29 37

Role in Class 1-C

Introduction to the S System

Sakagami introduces the school’s points system, explaining that students receive Private Points on the first day of each month but deliberately withholding the conditions that determine the amount. He confirms that the school evaluates students based on “strength,” though he cannot define it at that time. 1 2

After Class 1-C receives no Private Points for the following month, he explains the distinction between Private Points and Class Points: every Class Point is worth 100 Private Points, and every class began with 1,000 Class Points. He attributes Class 1-C's loss to 102 cases of tardiness or truancy and 283 instances of private chatting or phone use in class. 29

Selective Noninterference

Sakagami repeatedly declines to stop violent confrontations between students. When Kaneda Satoru reports being struck by Ryuen Kakeru, Sakagami removes his glasses and claims he cannot see clearly. 3

He similarly watches Ganlongdao defeat Ryuen and accepts Ganlongdao as Class 1-C’s leader, interpreting his early recognition of class competition and unity as an advantage for the class. 6

Guidance on Private Points

When Ganlongdao seeks to consolidate the class’s points, Sakagami supports the plan provided it has a rationale rather than being simple extortion. He confirms that points can purchase more than supplies and later witnesses the class-fund contract. 12 13

He reveals that Private Points can be used to hire teachers and that 20 million points can buy a transfer to another class. He also confirms that only Class A graduates receive free career selection. 14

Conflict over Ryuen Kakeru

After Ryuen remains absent for a week, Sakagami visits his dormitory with Ganlongdao. He recognizes that the supposed “magic circle” preventing Ryuen from attending school is a cover for a contest between the two students. 21 22

Sakagami orders Ganlongdao to resolve the situation within a week, threatening expulsion if Ryuen does not return to class. His ultimatum is motivated by Ryuen’s welfare only insofar as the prolonged conflict could damage Class 1-C’s advancement prospects. 22 23

Reaction to Ganlongdao's Administration

Sakagami is furious when Class 1-C’s Class Points fall to zero, particularly because Ganlongdao had united the class and consolidated its funds unusually quickly before failing to protect its discipline. 29

Despite his frustration, he is intrigued when Ganlongdao establishes paid class positions, improvement awards, and a responsibility system. Sakagami observes that the arrangement motivates weaker students to improve and ultimately allows it to proceed because it may benefit the class. 38 39

Relationships

• Prince Ganlongdao — Student and Class 1-C leader. Sakagami admires Ganlongdao’s sharpness and repeatedly gives him indirect information, but their relationship becomes tense as Ganlongdao disregards his authority and jeopardizes Class Points. 1 14 15 22 37
• Ryuen Kakeru — Student whose intelligence and initiative Sakagami recognizes. Sakagami tolerates Ryuen’s violence early on, then pressures Ganlongdao to end the conflict that keeps Ryuen absent from class. 2 3 22 23
• Kaneda Satoru — Student whom Sakagami regards as academically capable but unable to understand his indirect hints. Sakagami does not intervene when Kaneda is punished by Ganlongdao. 13 14
• Class 1-C — Sakagami’s assigned class. He protects and indulges its members when doing so aligns with his goal of leading them to Class A. 6 22 23

Story Role / Major Arcs

• Orientation and early power struggle — Introduces the points system and subtly prompts students to question the school’s promises, then permits Ryuen and Ganlongdao’s struggle for control of Class 1-C. 1 2 6
• Class-fund consolidation — Supports Ganlongdao’s collection of excess Private Points, verifies the class-fund agreement, and reveals key purchases available through points. 12 13 14
• Ryuen’s confinement — Investigates Ryuen’s prolonged absence, identifies the pressure it places on the class, and threatens Ganlongdao with expulsion unless the matter is resolved. 21 22 23
• Class Point collapse and restructuring — Announces that Class 1-C has lost all of its Class Points, then reluctantly observes Ganlongdao’s efforts to rebuild class motivation through assigned roles and rewards. 29 38 39