Amasawa

Biodata

Feature	Value
Name	Amasawa Reigetsu 1
Original Name	天泽
Alias(es)	Rei; Rei-kun; “Mr. Mystery” (Shiina Hiyori); “Boss” (Ichinose Honami) 2 3 19 22
Species/Race	Human; natural esper 1 8
Gender	Male 3 4 21
Affiliation	Tokyo Metropolitan Advanced Nurturing High School, Class 1-A; Student Council; Sakayanagi faction; formerly the White Room 1 3 18 33
Occupation/Role	Student; Student Council Vice President 18
Ability	Induction — manipulation of perception, thoughts, emotions, and behavior 1
First Appearance	Chapter 1, “Could You Use That on Me?” 1

Background / History

Amasawa awakened Induction on the day his younger sister, Amasawa Ichika, was born. His supernatural ability attracted Ayanokoji Atsuomi’s attention, leading to his placement in the White Room 1.

He found the White Room stifling and entertained himself by using mental suggestions on classmates and supervisors. Their reactions gradually became duller as the experiments continued. Ayanokoji Kiyoko stood out as the only person he remembered after leaving, and the only one ordinarily unaffected by his ability 1.

Kiyoko repeatedly summoned him to her room, where she would silently observe him before allowing him to leave. One such meeting lasted three hours. Amasawa eventually deliberately triggered an incident to leave the White Room; he also describes his departure as an expulsion 1 8.

During Sakayanagi Arisu’s childhood visit to the White Room, Amasawa compelled her to stand and then gave her a handcrafted wooden walking stick. She retained the cane and recognized him when they reunited in Class 1-A 3 5.

Appearance

• Hair: Black, with uneven bangs falling over his forehead 2 21.
• Eyes: Pale gray; they acquire a turbid glow when Induction activates 2 14.
• Voice: Usually calm and controlled; he can use it to deliver mental suggestions 6 14.
• Clothing: Wears the school uniform and lends his blazer to Morishita Ran when she is soaked and distressed 26.

Personality

Amasawa’s composed exterior contrasts with an excitable, sarcastic inner monologue. He deliberately cultivates an aloof, mysterious image, but Kiyoko’s unexpected affection quickly unsettles him. His thoughts frequently frame events through games, anime, and other fictional references 1 2 19.

His confidence rests partly on being a natural esper. He regards his power as a gift bestowed by the heavens and often treats other people’s reactions as entertainment. He provokes Kushida Kikyo into exposing her concealed hostility, manipulates classroom incidents, and repeatedly pressures Horikita Suzune into apologizing 7 8 11 23 29.

Despite his willingness to dominate others, he also offers practical protection and reassurance. He rescues Ran from drowning, intervenes when Horikita Manabu attacks Suzune, and comforts Ran when her fear of rejection surfaces. He dislikes crowded settings and often leaves public-facing class business to Arisu 6 11 14 16 26.

Abilities & Skills

Induction

Amasawa’s innate supernatural ability influences what others perceive, think, feel, and do 1.

• Perception manipulation: Can redirect another person’s line of sight so that he disappears from their awareness 1.
• Belief manipulation: Can make people believe or disbelieve something 1.
• Behavioral suggestions: Makes Arisu answer roll call enthusiastically and manipulates Kamuro Masumi’s actions to win a classroom bet 4 23.
• Emotional influence: Calms Arisu when her excitement threatens her health and reassures distressed classmates 6 26.
• Exposing concealed feelings: Brings a small portion of Kushida’s genuine hostility to the surface beneath her friendly performance 7.
• Dream manipulation: Makes Ran believe she is fighting him while she is actually asleep; the experience becomes a nightmare despite his intention to provide a dream sparring match 5.

Mass Induction and Full-Power Mind Control

Induction can affect multiple people simultaneously and includes a full-power mind-control application 1 6 26.

• Uses full-power mental Induction on Class A to prevent students from noticing anything amiss during Ran’s self-introduction 6.
• Sends a gentle mental influence throughout the school building to keep others from noticing him and Ran during a private moment 26.
• Initially states that he has avoided full-power mind control since his younger sister forced him to use it once; the Class A incident is described as his second use since childhood 1 6.

Activation and Limitations

• Eye contact: His eyes glow during several direct suggestions 2.
• Voice: Eye contact is not required; he can induce someone through speech alone 6.
• Interruption: Kiyoko’s sudden kiss breaks off his attempted suggestion to Kushida 2.
• Kiyoko’s resistance: His ordinary Induction repeatedly fails on her. Amasawa attributes his inability to induce her feelings to her apparent lack of emotion 1 2 8.
• Full-power exception remains unconfirmed: He considers mind control a possible alternative, but the cited encounters do not establish that he successfully controls Kiyoko at full power 1 2.

Martial Arts and Physical Resilience

• Evades Ran’s punches and sweep, catches her wrist with two fingers, and uses leverage to numb her arm 4.
• Neutralizes Manabu’s force through minimal movement and pressure-point strikes, supplementing the encounter with Induction 14.
• Survives being embedded deeply in a tree and returns to class after freeing himself and coughing up blood 3.
• His apparent victory over Ran is not solely a physical defeat: he subsequently explains that he put her to sleep and induced an imagined fight 4 5.

Swimming and Rescue

• Performs a rescue when Ran begins drowning during a freestyle race 16.
• Declines the boys’ race rather than publicly demonstrate his ability for a 5,000-point prize 16.

Analysis and Negotiation

• Recognizes the cafeteria’s free supplies as a warning that students may later lack points 7.
• Investigates the point system, Class A’s graduation benefits, and the 20-million-point class-transfer requirement 9.
• Infers a possible island-survival exam from the introduction of swimming lessons 13.
• Uses private points, alliances, and Student Council authority to secure influence across class boundaries 12 18 27.

School Evaluation

His preliminary assessment recommends Class A while identifying teamwork outside authoritarian roles as a weakness 9.

Category	Grade
Academic Ability	A 9
Intelligence	A 9
Judgment	A 9
Physical Ability	A 9
Teamwork	C 9

Equipment / Items

• Student terminal — Used for communication, purchases, and private-point transfers, including his one-million-point payment to Nagumo Miyabi 4 18.
• School blazer — Draped over Ran to warm and reassure her after she becomes soaked 26.
• Past midterm examination papers — Obtained from Manabu after discussing his Vice President duties 19.
• Handcrafted walking stick — Given to Arisu in the White Room; her later cane bears Amasawa’s name 3 5 22.

Relationships

• Ayanokoji Kiyoko — Former White Room companion and romantic partner. Her resistance to Induction fascinates him, while her affection and possessiveness repeatedly disrupt his composure. She calls him “Master” and protects him from Kushida’s hostility 1 2 8 20 23 31.
• Sakayanagi Arisu — Childhood acquaintance, Class A ally, and lover. Their reunion develops into mutual confession; he represents her faction during the approaching island exam 3 24 27 32 33.
• Morishita Ran — Classmate, deskmate, and initial challenger. He manipulates her dream duel, rescues her from drowning, and comforts her when she reveals her fear of isolation and rejection 3 5 16 26.
• Amasawa Ichika — Younger sister. His ability awakened on her birthday, and she once forced him to use full-power mind control 1.
• Ichinose Honami — Cross-class ally and personal secretary. He invests points in their alliance, secures her Student Council position, and begins mentoring her; she addresses him as “Boss” 12 18 19 27.
• Kushida Kikyo — Target of psychological manipulation. Their exam-paper negotiations develop into a coercive relationship in which she becomes frightened, dependent, and obedient toward him 7 17 20 21 25.
• Horikita Suzune — Adversarial relationship built around pressure, assistance, and forced apologies. He protects her from Manabu but later uses Sudo Ken’s situation to compel concessions 11 14 15 29 30.
• Horikita Manabu — Initially confronted over his assault on Suzune; later appoints Amasawa Vice President and delegates the Class C–Class D trial to him 14 18 27.
• Shiina Hiyori — Fellow mystery reader who calls him “Mr. Mystery.” Their literary connection develops into an obsessive fixation on her side, including a private collection of photographs and objects associated with him 13 22.
• Kamuro Masumi — Frequently runs Arisu’s errands to him and seeks his support. He comforts her and transfers 5,000 points after she complains about Arisu’s treatment 13 26.
• Nagumo Miyabi — Student Council rival. Amasawa challenges his control over Ichinose’s recruitment and pays one million points to settle the appointment dispute 18.
• Katsuragi Kohei — Rival faction leader within Class A. Katsuragi distrusts his intentions, particularly when Amasawa announces that he will represent the Sakayanagi faction in the island exam 33.

Story Role / Major Arcs

Arc	Chapters	Role and Outcome
Reunion and school entry	1 2 3	Reunites with Kiyoko on the bus, enters Class 1-A, meets Arisu again, and receives Ran’s challenge.
Early Class A life	4 5 6 7	Uses Induction in class and against Ran, deepens his connection with Arisu, and surveys the other classes.
Point-system investigation and alliances	9 11 12 13	Questions the teachers about school rules, pressures Suzune, concludes a one-million-point friendship deal with Class B, and anticipates an island exam.
Student Council appointment	14 15 17 18 19	Confronts Manabu, becomes Vice President, appoints Ichinose his secretary, and obtains past examination papers.
Kushida’s submission	20 21 25	Exploits Kushida’s fear following her confrontation with Kiyoko. She takes leave, then returns with examination materials while obeying her “master.”
Romantic rivalry	23 24 26 27	Navigates Kiyoko and Arisu’s competing claims, grows closer to Ran, and confirms his feelings with Arisu on the rooftop.
Class C–Class D trial	27 28 29 31	Presides over the dispute involving Sudo, pressures Suzune into apologizing for an extension, and accepts evidence that leads Class C to withdraw its accusation.
Approaching island exam	31 32 33	Predicts the cruise’s examination purpose, encounters another confrontation between Kiyoko and Arisu, and declares himself the Sakayanagi faction’s representative.

Notable Quotes

“9-1, I suppose. She’d beat me into a bloody mist in 9 seconds.”
— His answer when Arisu asks whether he or Kiyoko is stronger 3.

“I believe you will surprise me.”
— Reassuring Ichinose about her potential as Class B’s leader 19.

“Don’t be afraid... No one can notice us.”
— Comforting Ran after activating Mass Induction 26.