Horikita Suzune

Biodata

Feature	Value
Name	Horikita Suzune (堀北铃音)
Alias(es)	Horikita-imouto (used by Mikage Touji) 28 42
Gender	Female
Affiliation	Class D, first year 22 28
Occupation/Role	Student; a prominent analytical voice within Class D 45 46
Status	Active
First Appearance	Chapter 22

Background / History

Horikita entered Advanced Nurturing High School seeking advancement to Class A, yet was assigned to Class D. Before enrolling, she spent three years of middle school without making a single friend and maintained that capable people should solve their problems alone. Her distant behavior repeatedly rebuffed Kushida Kikyou’s attempts to approach her. 17 29

She is the younger sister of Student Council President Horikita Manabu. Their relationship is strained: Suzune admires him but struggles to speak honestly to him, while Manabu is frustrated by her isolation and independence. After a one-sided confrontation with her brother leaves her shaken, Mikage Touji escorts her to the infirmary and gives her the chance to contact Manabu. 27 28

Mikage pressures Suzune into confronting her fear of speaking with Manabu. Although she initially flees from the conversation, she returns and ultimately speaks with her brother. The incident leads her to exchange contact information with Mikage—her first documented friendship. 29

Appearance

Horikita has an austere, polished appearance that reinforces her unapproachable demeanor. She wears her school uniform meticulously and carries herself with controlled, deliberate movements. 22 42

• Long black hair, styled asymmetrically 42 48
• Cold, piercing eyes and an aloof expression 46
• Wine-red school uniform, with the collar buttoned neatly 42

Personality

Suzune is proud, self-reliant, and bluntly critical of others’ shortcomings. She initially sees friendship as unnecessary and believes individual excellence should be enough to resolve any problem. Her pride makes her reluctant to accept help, borrow points, or admit emotional vulnerability. 29 42

Despite this exterior, she cares about Class D’s future and gradually becomes more willing to act for the group. The midterm crisis forces her to recognize that her earlier belief in solving everything alone was naive; she nevertheless remains determined to reach Class A. 46 48

She is not easily intimidated. When confronted by an angry classmate in the library and later threatened by Sudō Ken, she responds with open disdain rather than backing down. 37 46

Abilities & Skills

Analytical Reasoning

Suzune closely observes irregularities and reconstructs hidden causes from limited evidence.

• Recorded Chabashira Sae’s statements to identify patterns in Class D’s point deductions. 22
• Noticed anomalous subject scores for Ike Kanji and Yamauchi Haruki before their expulsion. 45
• Determined that their answer key was a trap: its English section had been subtly altered while the other subjects closely matched the real exam. 46
• Connected the timing of the midterm crisis and the students’ point totals to suspect Sakayanagi Arisu’s involvement. 48

Academic Discipline

Suzune spends her time studying, reading, and cooking rather than pursuing entertainment. She also organized a study session for struggling Class D students, though their poor attitudes caused the effort to fail. 42 46

Direct Confrontation

Suzune argues forcefully when she believes someone is wrong, regardless of social pressure.

• Challenged a Class D student who dismissed studying as useless. 37
• Publicly confronted Sudō, Ike, and Yamauchi over their lack of effort and dependence on a fraudulent answer key. 46
• Pressed Sakayanagi for an explanation of her role in Class D’s collapse. 48

Relationships

• Horikita Manabu — Her older brother and the Student Council President. Suzune deeply values his opinion but is unable to communicate openly with him until Mikage intervenes. 27 29
• Mikage Touji — An unlikely friend from Class A. He helps reconnect her with Manabu, repeatedly teases and manipulates her, sells her Class D exam intelligence, and lends her points during the expulsion crisis. 28 29 42 47
• Kushida Kikyou — Former middle-school acquaintance. Kushida persistently seeks Suzune’s friendship while privately resenting her rejection and becoming obsessed with her. 17 30 31
• Hirata Yousuke — A fellow Class D student who works with Suzune during the midterm crisis. Their approaches differ: Hirata tries to save everyone, while Suzune initially regards the failing students’ expulsion as deserved. 46 47
• Sakayanagi Arisu — A Class D student Suzune confronts over the midterm scheme. Sakayanagi dismisses Suzune as unqualified to aid her own ambitions. 48
• Chabashira Sae — Class D’s homeroom teacher. Suzune seeks her help after learning the school’s harsh rules and later investigates the midterm situation alongside her. 23 46 48

Story Role / Major Arcs

Class D’s Point Crisis

While Class D panics over its loss of points and the school’s promotion rules, Suzune remains focused on documenting Chabashira’s explanation and identifying the system behind the deductions. 22

Reconciliation with Manabu

Suzune’s confrontation with Manabu exposes her emotional vulnerability. With Mikage’s unwanted assistance, she finally speaks to her brother and begins moving beyond her fear of facing him. 27 29

Midterm Exam and Expulsion Crisis

Suzune identifies the fraudulent answer key that misled Ike and Yamauchi, explains how the English section was altered, and harshly condemns Sudō, Ike, and Yamauchi for neglecting their studies. She later borrows 80,000 points from Mikage while weighing whether preserving Class D’s student count is worth the expense. 45 46 47

Confrontation with Sakayanagi

After the crisis, Suzune challenges Sakayanagi’s apparent role in allowing Class D to fracture. She admits that she cannot reach Class A through her own ability alone, but refuses to abandon that goal. 48

Notable Quotes

“Friends are only needed by the weak. If one is excellent enough, they can solve all problems on their own.” 29

“In any case, I will beat you.” 29

“Relying on my own strength alone is simply not enough.” 48

Trivia

• Suzune’s phone initially contains only two contacts she considers possible sources of major financial help: Manabu and Mikage. 47
• Mikage’s repeated use of Manabu as leverage is effective enough that Suzune calls it a “foolproof” weakness. 29