Amasawa Reigetsu

Biodata

Feature	Information
Name	Amasawa Reigetsu (天泽零月)
Alias(es)	Rei; Rei-kun 3 10
Species/Race	Esper
Gender	Male
Affiliation	Class 1-A, Tokyo Advanced Nurturing High School; Student Council 3 18
Occupation/Role	First-year student; Student Council Vice President 18
Status	Active 33
First Appearance	Chapter 1, “Can You Use That On Me” 1

Background

Reigetsu is the eldest son of the Amasawa family. On the day Amasawa Ichika was born, he awakened the mental ability he later named Induction. 1

He spent time in the White Room, where he encountered Ayanokoji Kiyoko and Sakayanagi Arisu. Reigetsu eventually caused an incident that enabled him to leave; his later reunion with Kiyoko at school revives their unresolved history. 1 3 8

In April, he enrolls at Tokyo Advanced Nurturing High School and is assigned to Class 1-A. His presence immediately draws attention from Sakayanagi and Morishita Ran, the latter challenging him to a duel on her first day in class. 1 3

Appearance

Reigetsu is a tall, slender young man with a composed bearing that makes him conspicuous even among uniformed students. 1 10

• Black hair with bangs that can shadow his eyes. 2
• Light gray, often described as pale or murky gray, eyes. 1 4
• Straight posture and a habit of keeping his hands in his pockets. 1
• Wears the Advanced Nurturing High School uniform. 1

Personality

Reigetsu presents himself as calm, aloof, and difficult to unsettle. He dislikes crowded social situations and delegates public-facing class matters when possible, but he is confident in his own abilities and rarely considers others a genuine threat. 6 8

He is highly calculating in both social and institutional matters. Reigetsu treats private points, Student Council appointments, and class alliances as resources to be invested, while frequently provoking others to expose their motives or weaknesses. 7 9 18 19

Despite his manipulative habits, he intervenes when he sees Horikita Manabu assaulting Suzune, rescues Morishita from drowning, and gives Class D time to produce evidence during the Class Trial. 14 16 29

Abilities & Skills

Induction

Induction is Reigetsu's esper ability, a form of mental suggestion and psychological manipulation. It can be activated through his gaze and can also be applied through his voice without eye contact. 1 2 6

• Influences targets' immediate behavior, such as making Sakayanagi answer Mashima enthusiastically during attendance. 4
• Can erase or suppress awareness of events; Reigetsu makes Class 1-A overlook his and Morishita's absence. 6
• Can induce a sleeping target to perceive an imagined fight as real, as he does to Morishita. 5
• Can calm and regulate a target's emotional or physical state, including stabilizing Sakayanagi when she becomes overwhelmed. 6
• Can affect groups, including causing nearby students to subconsciously ignore a public confrontation. 24
• An activation can be interrupted before its intended suggestion takes hold. 2

Combat Ability

Reigetsu possesses exceptional physical ability, martial skill, and combat analysis. His school file rates his physical ability, judgment, intelligence, and academics at A, with teamwork at C. 9

• Reads opponents' movement and physical traits from subtle details, such as the rhythm of Sakayanagi's cane. 3
• Evades Morishita's rapid attacks and defeats her during their grove duel. 4
• Subdues Horikita Manabu without injuring him while intervening in Manabu's assault on Suzune. 14
• Rescues Morishita after she begins drowning during a swimming race. 16
• Recovers rapidly from injury, an ability witnessed by Morishita before she challenges him. 3

Strategy and Political Maneuvering

Reigetsu is skilled at identifying incentives and exploiting institutional rules.

• Investigates the school's point system, Class A transfer conditions, and post-graduation benefits directly with faculty. 9
• Anticipates a survival-oriented island exam from the introduction of swimming lessons. 13
• Secures Class B's cooperation through a one-million-point deal. 12
• Outmaneuvers Nagumo Miyabi after becoming Student Council Vice President and appoints Ichinose Honami as his secretary. 18
• Uses the Class Trial to pressure Horikita while still giving Class D time to uncover evidence. 29

Equipment / Items

• Cane — A cane Reigetsu crafted as a child; he carries it while accompanying Sakayanagi. 11
• Student terminal — Used for school communication, private-point transactions, and class dealings. 4 9

Relationships

• Ayanokoji Kiyoko — A former White Room acquaintance whose request to experience Induction begins their renewed connection. Kiyoko is openly protective and possessive of Reigetsu, whom she calls her “Master.” 1 2 11 24
• Sakayanagi Arisu — Classmate and fellow White Room connection. Their initially tense reunion develops into mutual romantic feelings; Sakayanagi relies on Reigetsu during the island special exam. 3 6 27 33
• Morishita Ran — His Class 1-A desk mate and self-proclaimed martial-arts challenger. Reigetsu defeats her in their first duel, later becoming someone she trusts with her insecurities. 4 5 26 33
• Ichinose Honami — Class B's representative whom Reigetsu recruits through a class-level deal. As vice president, he appoints her his personal secretary and regards her as a long-term investment. 9 12 18 19
• Horikita Manabu — Reigetsu first confronts him over Suzune's mistreatment, then accepts Manabu's offer to join the Student Council as Vice President. 14 15 18
• Horikita Suzune — A frequent target of Reigetsu's pressure during the Class Trial, though he also intervenes on her behalf and gives Class D a chance to defend Sudo. 14 29 30
• Kushida Kikyo — Reigetsu quickly recognizes the falseness behind Kushida's friendly facade and exploits her desperation for exam materials, leaving her dependent and fearful of him. 7 17 21
• Shiina Hiyori — A fellow mystery-novel enthusiast whom Reigetsu meets in the library; Hiyori later displays an intense fixation on him. 13 22
• Ryuen Kakeru — A wary rival from Class C. Their library encounters are tense, and Ryuen recognizes Reigetsu as an unpredictable factor in the Class Trial. 21 22 29

Story Role / Major Arcs

• School Entrance and Class 1-A — Reigetsu reunites with Kiyoko, enrolls in Class 1-A, defeats Morishita, and becomes closely associated with Sakayanagi amid Class A's factional divide. 1 3 4 6
• Inter-Class Deals — He investigates the school system, approaches Class B, and establishes a one-million-point agreement with Ichinose's class. 9 12
• Student Council Appointment — After intervening in Horikita Manabu's conflict with Suzune, Reigetsu accepts the vice presidency and recruits Ichinose as his secretary despite Nagumo's opposition. 14 15 18
• Class Trial — Reigetsu presides over the dispute involving Sudo, manipulates Horikita into apologizing, and grants Class D a final opportunity to submit exonerating evidence. 27 29 31
• Uninhabited Island Exam — On the school yacht, he agrees to represent Sakayanagi's faction during the coming survival exam while keeping his intentions deliberately unclear to Katsuragi. 32 33

Notable Quotes

“Because I want to do it, I can do it.” — Reigetsu 6

“No need to pay it back.” — Reigetsu, to Ichinose Honami 19

Trivia

• Reigetsu's preliminary school evaluation is commonly summarized as 4A1C: A in academic ability, intelligence, judgment, and physical ability; C in teamwork. 9
• He shares a love of mystery novels with Shiina Hiyori. 13
• He declines to compete in the boys' swimming race because he does not want to reveal his level for a 5,000-point reward. 16