Suzune Horikita

Biodata

Feature	Value
Name	Suzune Horikita
Original Name	堀北铃音
Gender	Female
Affiliation	Class D, Advanced Nurturing High School
Occupation/Role	Student; Class D strategist and emerging leader
Status	Active
First Appearance	Chapter 1

Background / History

Suzune entered Advanced Nurturing High School in Class D while pursuing the goal of catching up to her older brother, Student Council President Manabu Horikita. Her ambition to reach Class A is closely tied to earning his recognition and proving that she is not a burden to him. 5 16 17 30

Before enrolling, she attended the same middle school as Kikyo Kushida. Kushida fears that Suzune knows about the secrets and class collapse connected to her past, viewing Suzune as a potential threat to the false persona she created at the new school. 47 48 49

Initially, Suzune isolated herself from Class D and focused on academic achievement rather than interpersonal bonds. Her brother's criticism forces her to confront her inability to unite others, prompting her to begin relying on allies and taking responsibility for the class as a whole. 5 16 17

Appearance

Suzune is a black-haired student who maintains a precise, disciplined presentation. During the cruise-ship exam, she wears her long hair in a neat ponytail and keeps her uniform collar perfectly arranged. 3 44

• Long black hair. 3 44
• Sharp gaze and a frequently stern or frosty expression. 23 44
• Keeps her uniform orderly even when confronting others. 44
• Sustains bruises, scratches, fever, and exhaustion during the Uninhabited Island Exam. 24 28 29 30

Personality

Suzune is proud, direct, and highly intolerant of carelessness. Early in the story, she considers cooperation with unreliable classmates inefficient, openly condemning Ken Sudo for jeopardizing Class D through impulsive violence. 5 15

Her self-reliance initially becomes a weakness. Manabu identifies her lack of genuine companions and inability to unite people as evidence that she is unprepared for the school; the confrontation deeply unsettles her but also compels her to change. 16 17

She remains severe and pragmatic, but gradually develops a stronger sense of responsibility toward Class D. She saves Sudo, protects the class from the pool voyeurism scandal, entrusts Ayanokoji with an intelligence role, and continues fighting for the class even while seriously ill. 10 20 21 28 29

Abilities & Skills

Academic and Logical Reasoning

Suzune is a strong student who approaches conflicts through evidence, rules, and strategic analysis.

• Helped assemble the 100,000 points needed to prevent Ken Sudo's expulsion after he fell one point below the mathematics passing line. 10
• Presented the argument that dismantled Class C's account during Sudo's Student Council hearing. 18
• Carefully monitored Class C's suspicious behavior on the island and agreed to exchange intelligence with Honami Ichinose. 25
• Recognized Mio Ibuki as a likely source of instability within Class D. 24 26 27
• Initially suspected Ibuki of causing the campsite fire, though the fire had actually been arranged by Ayanokoji to force Ibuki into action. 28

Leadership and Crisis Management

Suzune grows from an isolated high achiever into a student willing to manage Class D's internal problems.

• Argues that retaining Sudo is beneficial to Class D and declares her intention to rise into the upper classes. 10
• Persuades the frightened Airi Sakura to testify at the Student Council hearing. 17
• Retrieves the voyeurism camera's SD card to protect the victims while limiting damage to Class D. 20
• Reprimands the students involved in the voyeurism scheme and establishes that their misconduct will not be tolerated again. 21
• Entrusts Ayanokoji to remain near the implicated students and report future problems to her. 21

Determination and Endurance

Suzune persists through physical pain and failure rather than abandoning her responsibilities.

• Refuses Manabu's demand that she withdraw from the school. 16
• Chases Ibuki through the island forest despite developing a fever and becoming severely weakened. 28 29
• Continues attempting to reclaim the leader-card case after being injured and repeatedly knocked down. 29
• Ultimately loses the fight to Ibuki because of her fever and physical weakness. 29
• Accepts withdrawal from the island exam only after Ayanokoji convinces her that her condition would cause greater losses for Class D. 30 31

Equipment / Items

• Student terminal — used to check personal-point balances and communicate with allies. 10 17 18
• Remote camera SD card — retrieved from the voyeurism device and later handed to Ayanokoji after the incident was contained. 20 21
• Class D leader-card case — carried during the Uninhabited Island Exam; Ibuki stole it during the campsite fire, though Ayanokoji indicated that the card inside may not have been genuine. 28 29

Relationships

• Manabu Horikita — Older brother and Student Council President. Suzune seeks his recognition, while his harsh criticism and demand that she leave the school push her to reassess herself. 16 17 30
• Kiyotaka Ayanokoji — Strategic partner. They save Sudo together, work to contain the voyeurism scandal, scout the island, and form an explicit partnership built on trust. 10 21 23 30 31
• Yoshikage Kira — An outside ally from Class B. He provides information about Airi Sakura, intervenes when Manabu restrains Suzune, and assists Class D's hearing strategy. 15 16 17 18
• Ken Sudo — Classmate whose impulsiveness she openly disdains, yet she helps save him from expulsion because retaining him benefits Class D. 10 15
• Airi Sakura — Witness Suzune convinces to testify for Sudo during the Student Council hearing. 17 18
• Honami Ichinose — Class B leader who challenges Suzune's plan to quietly cover up the voyeurism scandal; they ultimately reach an agreement to resolve it. 20 25
• Mio Ibuki — Suspected infiltrator from Class C. Suzune remains wary of her, pursues her after the leader-card case is stolen, and loses their fight while feverish. 24 27 28 29
• Kikyo Kushida — Former middle-school classmate. Kushida fears Suzune's knowledge of her past and considers removing Suzune from the school to protect her own image. 47 48 49
• Yosuke Hirata — Class D's mediator and organizer. Suzune initially rejects his request to help find witnesses for Sudo, but later works alongside the class structure he helps maintain. 15 23 24
• Kei Karuizawa — Suzune holds a strongly negative assessment of Kei's academic ability, judgment, and behavior within the girls' clique. 45

Story Role / Major Arcs

First Special Exam and Ken Sudo Hearing

Suzune cooperates with Ayanokoji to use 100,000 points to keep Ken Sudo enrolled, identifying his retention as advantageous for Class D. 10 Although she initially refuses to search for witnesses after Sudo's assault accusation, Kira's information about Airi Sakura leads her to seek Sakura's testimony. 15 17 She then argues Class D's case at the hearing, exposing flaws in Class C's narrative and helping prevent a complete defeat. 18

Confrontation with Manabu

Suzune asks Manabu to deliver a fair ruling in Sudo's hearing, only for him to dismiss fairness as weakness and attack her inability to lead others. 16 When he urges her to withdraw, she refuses and renews her determination to remain at the school, reach Class A, and prove herself. 16 17

Pool Voyeurism Incident

Acting on information passed to her by Ayanokoji, Suzune retrieves the SD card from a remote-controlled camera hidden in the girls' locker-room ventilation system. 20 Following a confrontation with Ichinose and Kira, she chooses to contain the incident, warn the involved Class D students, and appoint Ayanokoji as a reliable observer within the group. 20 21

Uninhabited Island Exam

Suzune scouts island outposts with Ayanokoji, investigates Class A's apparent leader arrangement, and remains suspicious of Class C's tactics and Ibuki's presence in Class D. 23 24 25 27 During the final-day fire, Ibuki steals the leader-card case; Suzune pursues her despite fever and injuries, but is defeated. 28 29 Ayanokoji takes over as Class D's leader after her withdrawal, and his plan secures Class D second place in the exam. 30 31 32

Cruise-Ship VIP Exam

Suzune continues investigating the special exam alongside Ayanokoji, confronting him over Class D's situation and discussing possible use of Kei Karuizawa in their strategy. 44 45 Meanwhile, Kushida's fear of Suzune's knowledge about their shared middle-school past becomes a major hidden threat. 46 47 48

Notable Quotes

“I won't withdraw! I came here to catch up to you, and I won't give up just like that!” 16

“The Leader Card is the lifeline of Class D, and I will never let you hand it over to Ryuen!” 29