Horikita Suzune

Biodata

Feature	Information
Name	Horikita Suzune (堀北铃音)
Alias(es)	“Compass Demon” 19 25
Gender	Female
Affiliation	Advanced Nurturing High School; Class 1-D
Occupation/Role	Student; Tatsuya Sakuya’s seatmate
First Appearance	Chapter 2

Background / History

Suzune enters Advanced Nurturing High School in Class 1-D despite believing her written entrance-exam score placed within the school’s top three. She considers the placement an error, as she regards her academics and discipline as superior to most of her classmates. Chabashira Sae later confirms that the school deliberately assigned her to Class 1-D because her arrogance, poor communication, and inability to cooperate with others also qualify her as a “defective product.” 21

Her older brother is Horikita Manabu, the Student Council president and a Class 3-A student. Suzune enrolled in the school to follow in his footsteps and is determined to reach Class 1-A to earn his recognition. 3 16 22 25

Manabu rejects her ambition, citing her Class 1-D placement as proof of inadequacy and telling her to drop out. His words shake her confidence but strengthen her resolve to rise to Class 1-A. 24 25

Appearance

Suzune is a beautiful girl with long, straight black hair and delicate features. She typically presents herself with a composed, distant bearing that discourages casual approaches. 2

• Wears the Advanced Nurturing High School uniform. 2
• Often sits upright while reading or studying. 2 6
• Was first seen reading Crime and Punishment. 2 3
• Her wet black hair clings to her cheeks after being pushed into the pool by Sakuya. 11

Personality

Suzune is proud, academically focused, and openly dismissive of shallow social interaction. During Class 1-D’s introductions, she states that friendship should be based on equality and asks classmates not to speak to her without an important reason. 2

She favors efficiency over socializing, choosing to wait for crowds to clear after class rather than join a gathering she considers meaningless. Although initially cold toward Sakuya, she gradually engages him more often when his hidden abilities and knowledge draw her interest. 3 8 20 31

Her pride is closely tied to reaching Class 1-A and catching up to Manabu. Being called a Class 1-D “defective product” deeply angers her, but she responds to Chabashira’s condemnation with renewed determination rather than surrender. 19 21 25

Suzune can be impulsive when provoked. After Sakuya relays Class 1-A’s contemptuous view of Class 1-D, she strikes him with a knifehand chop and threatens him with a compass. 19

Abilities & Skills

Academic Ability

Suzune is a dedicated student who studies independently even before formal lessons begin.

• Claimed to rank within the top three on the school’s written entrance examination. 21
• Studies Advanced Mathematics, Volume One during class downtime. 6
• Correctly recognizes that the school’s privileges and monthly points likely come with hidden conditions. 6
• Struggles with the mock examination’s out-of-syllabus questions, showing that her academic ability has limits against the school’s more advanced tests. 27

Analysis and Observation

Suzune notices inconsistencies in both people and systems.

• Witnesses Sakuya’s reflexes and sudden acceleration during the endurance run, concluding that he deliberately hides his true physical ability. 8
• Questions Sakuya’s contact with Class 1-A and seeks information about the first-year classes. 19
• Notices Sakuya’s unusual calm when Class 1-D’s monthly point distribution disappears. 31
• Takes the full allotted time on the school’s psychological assessment, carefully weighing the moral implications of each choice. 21

Confrontation

Suzune is willing to directly challenge conduct she considers unacceptable.

• Confronts Ike Kanji and Yamauchi Haruki after they make vulgar remarks about Hasebe Haruka, identifying their behavior as public sexual harassment and threatening to report them. 10
• Her intervention initially fails to intimidate the boys, who mock her until Sakuya reveals her connection to the Student Council president. 10
• Reacts physically when her pride or ambitions are attacked, including her “Compass Demon” outburst toward Sakuya. 19

Equipment / Items

• Compass — Carried on her person and brandished threateningly at Sakuya after he provokes her. 19 25
• Crime and Punishment — A foreign novel she reads during Class 1-D’s introductions and while waiting for the entrance ceremony crowd to clear. 2 3
• Advanced Mathematics, Volume One — Studied before the first lesson of the semester. 6

Relationships

• Tatsuya Sakuya — Her Class 1-D seatmate. Their relationship begins with deliberate mutual distance, but Suzune increasingly questions his concealed abilities and knowledge. He defuses the harassment incident by invoking Manabu’s name and later keeps their encounter with Manabu confidential. 3 8 10 25
• Horikita Manabu — Her older brother and the Student Council president. Suzune came to the school to follow him and seeks his recognition, while Manabu harshly dismisses her ability to reach Class 1-A. 3 16 24 25
• Chabashira Sae — Her Class 1-D homeroom teacher. Chabashira reveals that Suzune’s lack of cooperation and communication contributed to her Class 1-D placement. 20 21
• Ike Kanji and Yamauchi Haruki — Classmates Suzune confronts for sexually harassing Hasebe Haruka through vulgar remarks. 10

Story Role / Major Arcs

Class 1-D Enrollment

Suzune establishes herself as Class 1-D’s aloof academic elitist, rejecting the class’s attempts at casual friendship and focusing on study instead. She begins as Sakuya’s seatmate, though both initially maintain a policy of noninterference. 2 3 6

Swimming Test and Harassment Incident

During the swimming test, Suzune confronts Ike and Yamauchi for their remarks about Hasebe. Sakuya ends the confrontation by revealing that Suzune shares a surname with Student Council president Manabu, inadvertently exposing the sibling connection she had kept private. 10 11

Class 1-D’s “Defective Products” Assessment

Suzune is enraged when Sakuya reports Sakamayanagi Arisu’s view that Class 1-D is the “Gathering Place of Defective Products.” Her resulting outburst earns her the “Compass Demon” nickname. 19

Chabashira later confirms that Suzune herself was assigned to Class 1-D for deficiencies beyond academics, especially her inability to communicate and cooperate. Suzune responds by declaring that she will reach Class 1-A and prove the school wrong. 21

Conflict with Horikita Manabu

Suzune meets Manabu privately and insists that she will rise to Class 1-A. He ridicules her Class 1-D placement and claims she lacks the ability to advance, while Sakuya intervenes when the confrontation turns violent. Suzune leaves the encounter more firmly committed to proving herself. 24 25

Notable Quotes

“Making friends should be based on equality between both sides. I don't see how being friends with people whose minds contain nothing but games and points would benefit my university life.” 2

“Then I will make Class 1-A my goal, charge toward Class 1-A, and prove that I have what it takes to be there.” 21

“I will make it to Class 1-A. I will prove my abilities to my brother.” 25