Horikita

Biodata

Feature	Information
Name	Horikita Suzune (堀北 鈴音) 3
Alias(es)	Horikita; Suzune
Gender	Female
Affiliation	Advanced Nurturing High School; Class 1-D 3 49
Occupation/Role	Student; Class D’s leader during the uninhabited-island special exam 49
First Appearance	Chapter 3

Background / History

Horikita enters Class 1-D despite being the younger sister of Student Council President Horikita Manabu. She insists that her placement is due to her own lack of ability and rejects being defined by her brother, though she is deeply concerned that her performance could tarnish his reputation. Her central ambition is to reach Class A, equal her brother’s excellence, and earn recognition through her own achievements. 3 15

Initially, she treats Ayanokoji Kiyotaka with open hostility after he identifies her connection to Manabu. Her suspicion intensifies when he knows personal information that she never disclosed, but she accepts his explanation after he claims to have seen her file in the faculty office. 3 6

The threat of expulsions during the midterms forces Horikita to shift from isolated academic pursuit toward class-wide action. She partners with Ayanokoji to organize the struggling students, accepts the possibility of using private points to obtain test materials, and begins working with Kushida Kikyo despite finding her behavior uncomfortable. 15 16 21

Appearance

Horikita is a notably attractive girl with long, smooth jet-black hair that reaches her waist. She is often described through her composed, severe expression and sharp gaze. 3 6

• Long, straight black hair reaching her waist. 3
• Almond-shaped eyes; reddish-purple eyes are noted during the disciplinary-hearing preparations. 22 35
• Usually maintains a cold, expressionless appearance. 3
• Wears casual clothes outside class; during the Sudo investigation, she wears black knee-high socks and a white skirt. 15 33
• Sensitive to cold and visibly ill during the uninhabited-island exam. 42 45 46

Personality

Horikita is proud, intensely competitive, and exceptionally guarded about her identity. She considers association with her brother unwelcome and reacts sharply when others speculate about her personal life. Her high standards and blunt criticism often alienate classmates, particularly those whose priorities and circumstances she struggles to understand. 3 6 9 21

She is disciplined to an extreme degree, dedicating roughly 70% of her day to studying. Her initial motivation for aiding Class D is pragmatic: expulsions and poor class performance could obstruct her path to Class A. 15

Over time, her concern becomes more personal. She prepares English notes for Sudo, pursues evidence to clear him of assault charges, accepts help when ill, and develops a greater appreciation for Class D’s support during the island exam. 22 33 46 49

Abilities & Skills

Academic Ability and Tutoring

Horikita is one of Class D’s strongest academic students and applies her knowledge directly to supporting weaker classmates. 37

• Maintains an intensive personal study schedule. 15
• Organized the academically struggling members of Class D into study sessions. 16 21
• Compiled an English notebook covering fundamentals and likely exam topics for Sudo. 22
• Recognized that Class D’s academic survival was necessary for its advancement toward Class A. 15

Strategic Reasoning

Horikita is capable of identifying useful tactics and adapting to the school’s competitive rules, though her plans can be overly rigid or incomplete. 16 34

• Accepted the use of private points to obtain upperclassmen’s test materials after initially hesitating over the method. 16
• Attempted to pressure Class C students into exposing their role in provoking Sudo by using fake surveillance cameras and a concealed recording. 34
• Identified concealment of Class D’s leader and discovery of rival leaders as central to the island exam. 47
• Proposed disguising base refreshes as ordinary shower use, preventing opponents from easily identifying the class leader. 49

Limitations

• Her fake-camera strategy did not account for Class C challenging the recording’s credibility; Ichinose’s independent evidence ultimately secured Sudo’s acquittal. 34 35 36
• She becomes visibly nervous in high-pressure formal proceedings, especially during Sudo’s disciplinary hearing. 35 36
• Her rigid values and difficulty understanding poorer classmates can hinder cooperation. 16 21

Leadership

Horikita gradually earns Class D’s confidence through practical solutions and willingness to take responsibility. 49

• Took responsibility for gathering Sudo, Ike, and Yamauchi for study sessions. 16
• Pursued Sudo’s innocence after his conflict with Class C. 33
• Assumed leadership after Hirata’s injury threatened to leave Class D without a leader on the island. 49
• Won the class’s approval through her shower-stall plan to protect the leader’s identity. 49

Equipment / Items

• English study notebook — Prepared for Sudo, containing basic English knowledge and key exam points. 22
• Surveillance cameras — Used in her attempt to bluff Class C into confessing to provoking Sudo. 34
• Phone recording — Used to capture Class C students’ incriminating conversation, though its credibility was challenged at the hearing. 34 36
• Emergency cold medicine — Received from Ayanokoji during the island exam. 45 46

Relationships

• Horikita Manabu — Her older brother and the Student Council President. Horikita seeks to match his excellence and gain his recognition, while refusing to let others define her through him. 3 15
• Ayanokoji Kiyotaka — Initially hostile classmates who become strategic partners. She repeatedly seeks his assistance with Class D’s problems, while remaining suspicious of his motives and hidden capabilities. 3 15 33 37 47
• Sudo Ken — A classmate she initially clashes with. She later gives him personalized English notes and works to clear his name after the Class C altercation; Sudo begins to admire her efforts. 9 22 33
• Kushida Kikyo — Kushida attempts to get close to Horikita while secretly seeking her expulsion through a deal with Ryuen. Horikita finds Kushida’s persistent friendliness unsettling. 10 21 26
• Hirata Yosuke — A fellow Class D organizer. Horikita works alongside his study sessions and takes a larger leadership role after his injury on the island. 21 47 49
• Sakura Airi — Sakura cares for Horikita while she is ill during the island exam, contributing to Horikita’s growing understanding of her classmates’ support. 46 49
• Ichinose Honami — Ichinose provides crucial third-party evidence that clears Sudo when Horikita’s recording alone is insufficient. 35 36
• Ibuki Mio — Horikita distrusts Ibuki after she joins Class D’s campsite, believing her presence may conceal hostile intentions. 47

Story Role / Major Arcs

Class D Introduction

Horikita’s hostile first meeting with Ayanokoji establishes her as a guarded, proud student driven by her brother’s reputation and her own ambition to rise from Class D. 3 6

Midterm Survival

Faced with the risk of expulsion, Horikita expands beyond individual study and helps coordinate Class D’s struggling students. She and Ayanokoji divide responsibilities: she gathers the underachievers for study, while he pursues exam materials. 15 16

Sudo Disciplinary Hearing

After Sudo is accused of assaulting Class C students, Horikita takes the initiative to investigate and expose the provocation. Her bluffing strategy creates useful evidence but falters when Class C disputes its validity; Ichinose’s recording and Manabu’s intervention ultimately clear Sudo. 33 34 35 36

Uninhabited-Island Special Exam

Horikita’s cold worsens during the exam, forcing her to accept Ayanokoji and Sakura’s care. After recovering, she correctly identifies the importance of protecting the class leader’s identity, proposes the shower-based base-refresh strategy, and is selected as Class D’s new leader. 45 46 47 49

Trivia

• Horikita’s first saved contact is Ayanokoji Kiyotaka, after they exchange information during the midterm preparations. 16
• She is highly frugal, choosing free basic supplies at Keyaki Mall and arguing that points should be saved for future needs. 6
• Ayanokoji repeatedly interprets her concern for Sudo as possible romantic interest, though Horikita reacts with extreme hostility to the suggestion. 15 35