Horikita Suzune

Biodata

Feature	Details
Name	Horikita Suzune (堀北鈴音)
Alias(es)	Suzune-chan; “Iceberg girl”
Gender	Female
Affiliation	Class 1-D; later Class C
Occupation/Role	Student; Class D organizer and training supervisor
Status	Active
First Appearance	Chapter 2

Power Progression

Stage / Realm / Level	Chapter	Notes
S-Rank, 3rd seat	58 59	Her grades rise into the top tier of the year through focused tutoring and sustained effort; she secures the third S-Rank position.

Background / History

Suzune entered Tokyo Advanced Nurturing High School as a Class D student. At the school gate, she prematurely judged Akiyama Shin as shallow after seeing him look toward Kushida Kikyo, then withdrew the judgment when he calmly confronted her reasoning. She nonetheless initially regarded him as someone requiring further observation rather than an equal. 2

Before enrollment, Suzune modeled herself after her older brother, Horikita Manabu. She grew out her hair because he said long hair looked nice, isolated herself from social interaction, and devoted herself to academic study in the belief that ability alone would earn his recognition. 109

Her early encounters with Akiyama gradually changed her outlook. His point transaction with Class B and his indirect clue regarding the cafeteria’s free-meal counter led her to recognize the school’s harsher class-evaluation system and reassess his insight. 8 His intervention during Manabu’s confrontation with her further established him as a benchmark of strength in her mind. 18 19

Appearance

Suzune is a strikingly beautiful girl with a cool, inaccessible presence. Her poised posture and tailored uniform reinforce an aura that discourages casual approach. 2 8

• Jet-black, waist-length hair; a left-front strand is braided and tied with a white butterfly bow. 2
• Delicate, doll-like facial features and clear eyes usually described as cold or aloof. 2
• Well-proportioned figure with long, slender legs. 2
• Wears her hair in a neat ponytail while exercising. 27

Personality

Initially, Suzune is proud, blunt, and highly self-reliant. She tends to form firm conclusions from limited information, struggles with social tact, and prioritizes efficiency over others’ comfort or feelings. Her conflict with Hirata over delaying a study session illustrates her impatience with what she sees as wasted time. 2 36

She is intensely competitive and driven by a desire to prove herself, particularly in relation to Manabu. Even when confronted with Class D’s poor standing and the threat of expulsion, she responds by analyzing the school’s broader evaluation criteria rather than retreating. 27

Over time, Suzune becomes more receptive to companionship and cooperation. She accepts Kushida’s offered umbrella, participates in collective study efforts, and eventually recognizes Akiyama, Kushida, Sakura, and her classmates as irreplaceable parts of her life. 22 33 109

Abilities & Skills

Academic Ability

Suzune possesses strong academic foundations and improves rapidly when given direction and a clear goal.

• Analyzed Class D’s weaknesses as failures of self-management, cooperation, rule comprehension, and broader comprehensive ability. 27
• Reached the grade’s top academic tier and held the third S-Rank seat during the midterm plan. 58 59
• Served as a crucial participant in Akiyama’s grade-prediction and betting strategy. 59

Observation & Deduction

Suzune develops into a careful observer capable of constructing detailed inferences from behavior.

• Deduced that Sakura Airi was likely connected to Sudo Ken’s incident by comparing Airi’s fearful reactions with her known habit of photography. 64
• Inferred that Airi might be concealing an online identity rather than merely hiding her role as a witness. 64
• Correctly suspected that Class D contained a mole during the Sports Festival registration period. 105

Athletic Ability

Suzune maintains an exercise routine and has demonstrated practical fighting ability.

• Regularly runs in the morning and trains with disciplined focus. 27
• Attempted a fast spinning hook kick against Ryuen Kakeru while trapped in the old school building. 106
• Supervised the girls’ Sports Festival training, demonstrating stretches with precise form. 102

Class Organization

Suzune increasingly takes responsibility for Class D’s performance and cohesion.

• Joined the study group despite her initial preference to work independently. 33
• Advocated for immediate study sessions when the class faced academic risk. 36
• Helped supervise Sports Festival training and handled Akiyama’s registration forms while he was ill. 102 104
• Helped unite Class D behind the decision to expel Yamauchi Haruki following his betrayal. 109

Relationships

• Akiyama Shin — Initially dismisses him as shallow, then becomes his trusted collaborator after recognizing his intelligence and ability. She develops romantic feelings for him; their relationship is later confirmed alongside Kushida and Sakura. 2 8 42 117
• Horikita Manabu — Her older brother and childhood ideal. Suzune spent much of her life trying to gain his recognition, though their relationship is strained by his harsh treatment of Class D and of her. 18 109
• Kushida Kikyo — Former middle-school acquaintance. Their relationship begins with distrust and Kushida’s fear that Suzune knows her past, but develops into mutual acceptance and friendship. 10 22 24 117
• Sakura Airi — Classmate and close companion. Suzune identifies Airi’s connection to the Sudo incident and later forms a supportive bond with her. 64 100 117
• Ryuen Kakeru — Antagonist who exploits Suzune’s attachment to Manabu by luring her into a trap to steal Class D’s Sports Festival forms. 105 106
• Kiyotaka Ayanokoji — Met on the bus before enrollment. He attempts to mediate her first confrontation with Akiyama despite Suzune’s lack of interest in friendship at the time. 2

Story Role / Major Arcs

• Class D Enrollment — Begins as an aloof Class D student who misjudges Akiyama, then recognizes that the school evaluates far more than academics. 2 8
• Class D Improvement — Participates in the study group and shifts from solitary ambition toward helping raise the class’s overall academic performance. 33 36
• Midterm and Betting Plan — Achieves third S-Rank, wins the betting website’s 51 million-point first prize, and transfers the winnings to Akiyama for strategic use. 58 59 60
• Sudo Incident — Identifies Sakura as the likely witness and assists Akiyama’s efforts to clear Sudo’s name. 64 65
• Uninhabited Island VIP Exam — Makes remarks that inadvertently increase suspicion on Class D, then accepts Akiyama’s explanation and guidance. 85 86
• Sports Festival Trap — Is lured by a forged letter in Manabu’s handwriting, resists Ryuen’s group, and is rescued by Akiyama. The incident leads her to embrace Class D’s support and reject Yamauchi’s betrayal. 105 106 109
• Relationship Development — Confesses her feelings to Akiyama and later accepts her place in his relationship with Kushida and Sakura. 116 117

Notable Quotes

“I once believed. Life was a track that could only be traveled alone.” 109

Trivia

• Suzune resides in Room 601, directly one floor above Akiyama’s Room 501. 10
• She is notably inexperienced with romance and initially becomes easily flustered whenever Akiyama’s attention or praise is directed at her. 17 64 116