Nagumo

Biodata

Feature	Value
Name	Nagumo Miyabi
Original Name	南云
Gender	Male
Affiliation	High School of Advanced Education; Class 2-A, later third-year Class A 28 550 666
Occupation/Role	Class representative; de facto leader of his grade; shop operator; former Student Council Vice President and treasurer 28 39 47 57 536
Status	Remains an influential student after being expelled from the Student Council for misconduct 461 666
First Appearance	Chapter 28

Background / History

Nagumo began in Class B and led his class to Class A by the end of his first year, overtaking the class represented by Kiriyama. Manabu Horikita recognized this achievement and recruited him as Student Council Vice President 454.

His rise depended on coordinating students across class boundaries. The four class representatives in his grade negotiated exam strategies together, allowing them to extract large rewards from the school. Nagumo also received fixed private-point payments from individual students and classes 39 161.

Within the Student Council, Nagumo bought members' support. Horikita brought Kiriyama into the council as a counterweight, but Kiriyama eventually fell under Nagumo's influence as well. Akane Tachibana remained firmly aligned with Horikita 57 355.

Student Council Career

Position / Development	Chapter	Details
Appointed Vice President	454	Recruited by Horikita at the end of his first year after leading Class B to Class A; described retrospectively.
Introduced as Vice President	28	Identifies himself as both Class 2-A's representative and Student Council Vice President.
Demoted to accountant / treasurer	57	The vice-presidential position is abolished, reducing his formal authority despite his supporters within the council.
Retains influence through Kiriyama	355	Occupies the vice president's seat while Kiriyama sits at the treasurer's desk.
Removed from council membership	380 454	Continues commanding Kiriyama and representing the second years without holding a council position.
Reappointed Vice President	459	Supports Sakayanagi's election in exchange for restoration to the position.
Expelled for misconduct	460 461	Sakayanagi removes him immediately after the presidential handover.

Appearance

• Short blond hair and a handsome face 57 459.
• A normally cheerful expression accompanied by a disdainful look in his eyes 57.
• Appears particularly energetic while wearing the Soccer Club uniform 230.
• His expression becomes visibly strained or angry when his position or finances are threatened 57 70 666.

Personality

Nagumo is ambitious, calculating, and strongly attracted to institutional power. He wants the Student Council presidency to secure his standing, and he also intends to graduate with substantial wealth. When Horikita refuses to nominate him, Nagumo decides to obtain the position through pressure rather than acceptance 39 328 392.

He treats attractive girls as both romantic prospects and potential assets. He pursues younger students despite Asahina's objections to his interest in multiple girls, and later considers making Hiyori Shiina both an informant and a backup girlfriend. He is skeptical that friendship alone explains Oreki's relationships with girls 28 319 536.

His respect for Manabu Horikita is genuine, even though their principles conflict. Nagumo wants to surpass him and acknowledges the difficulty of leading a class whose other members cannot match its representative. Horikita, however, condemns the harm caused by Nagumo's preferred methods 379 459 460.

Nagumo can exercise patience, but he resents humiliation and retaliates against those who defeat him. After the Training Camp Exam, Asahina identifies his limited generosity of spirit as the reason he cannot accept Oreki and Sakayanagi's interference. Later setbacks make him more cautious: he declines to involve himself in Oreki's shop meeting and pays heavily to prevent interference during the island exam 411 495 538.

Abilities & Skills

Grade-Wide Leadership

• Coordinates representatives from all four classes to negotiate exam outcomes and participant lists 161 225.
• Collects recurring private-point payments from his grade 39.
• Maintains influence through supporters such as Kiriyama even after losing his council position 355 380.
• Near graduation, Class A's secure ranking and students' fear of expulsion reinforce their loyalty to him 666.
• His authority is not absolute: defeats against Oreki weaken his intimidation, while betraying Kiriyama creates a lasting rift 319 328 536.

Exam Strategy and Point Farming

• Earned more than 300 class evaluation points and accumulated over 5 million private points through his first-year island and VIP exams 207.
• Supports Class 3-B to pressure Horikita's Class 3-A and influence the presidential succession 379 392.
• Organizes tutoring for weaker students in lower classes to prepare for a profitable upperclassman special exam 329.
• Manipulates group composition, scores, and exposure to penalties in cross-grade exams 379 394 538.
• His methods become less effective when the school closes loopholes or an exam primarily tests raw ability 328.

Political Manipulation and Information Gathering

• Buys support within the Student Council and uses its forum administrators to monitor and alter discussion about him 57 364.
• Falsely attributes a report about Ichinose's wealth to Sakayanagi, attempting to force Sakayanagi into attacking her 366.
• Uses financial assistance and moral pressure to push Ichinose into pursuing Oreki, hoping to damage Oreki's relationship with Sakayanagi 440 526.
• Attempts to recruit existing council members as informants after Sakayanagi rejects his proposed recruits 536.
• Repeatedly underestimates Oreki and Sakayanagi, leaving himself vulnerable to financial traps and broken political arrangements 70 366 461.

Academic and Athletic Ability

• Has high academic ability and natural sporting talent 459.
• Acknowledges that his academic performance trails Horikita's, but believes he can compete with him athletically 261.
• Maintains a fast, steady lead near the end of the Sports Festival relay in the documented passage 261.
• Recognizes unusual changes in Oreki's grade's exams and avoids intervening without understanding the risks 495.

Equipment / Weapons / Items

• Student ID card / private-point account — Used to manage his funds; his balance falls to 16,000 points after Oreki's exam-leak trap 70.
• Mobile phone — Used for negotiations, private messages, and contacting Kiriyama during discussions with Oreki 440 536 537.
• School shop — Opened after purchasing the operating rights; employs school-approved staff because students cannot work there. Nagumo checks its accounts personally 47 494.
• Recorded guarantee from Sakayanagi — Audio, video, and a written promise documenting her offer to restore his vice presidency in exchange for second-year votes. He cannot safely use it after his removal without risking his remaining support 459 461.

Relationships

• Houtarou Oreki — Rival who repeatedly defeats his schemes and extracts points from him. Nagumo resents Oreki's relationships with younger girls but increasingly approaches him with caution 29 70 440 536 538.
• Manabu Horikita — Former superior and admired rival. Horikita initially promotes him, later rejects him as a successor, and refuses to endorse contests that harm other students 379 454 459.
• Nazuna Asahina — Childhood friend and classmate. She rejects his romantic advances because of his attention to other girls, criticizes his defeats, and gives Oreki information about his plans 28 319 388 411.
• Kiriyama — Former class-ranking rival turned subordinate and intermediary within the council. Nagumo abandons his promised electoral support, then later offers 10 million points to secure his loyalty 355 459 536 538.
• Arisu Sakayanagi — Romantic interest, adversary, and brief political ally. She forces him to pay compensation, obtains his grade's votes, and expels him after restoring his vice presidency 356 366 367 459 461.
• Honami Ichinose — Junior he initially pursues, then targets through rumors and financial pressure. She later demands compensation, while he uses her as a means of attacking Oreki and Sakayanagi's relationship 40 366 367 440.
• Hiyori Shiina — Prospective informant and romantic backup. His attempt to approach her fails when he discovers her close relationship with Oreki 536.
• Akane Tachibana — Horikita's loyal supporter and an opponent of Nagumo. She remains hostile because his exam interference costs the third-year Class A students money 57 459.
• Fuuka Kiryuin — Talented student whose unpredictability threatens his control. He opposes her return to Class A and has Kiriyama interfere with her Sports Festival performance 664 666 667.

Story Role / Major Arcs

Shop Dispute and Five-Million-Point Bet

• Introduces himself while checking shop accounts and takes an interest in Oreki's business proposals and female companions 28.
• Oreki confronts his pursuit of younger girls and withholds Suzune's surname to discourage further attention 29 30.
• Bets that Oreki cannot earn 5 million points in three days; failure would bar Oreki from joining the Student Council for that year 39 40.
• Attempts to undermine Oreki's reputation by publicizing the wager among his classmates, but the girls support Oreki instead 40.

Exam-Leak Trap

Oreki threatens an exam-paper leak, forcing Nagumo to weigh his finances against his control of the second years and prospects for the presidency. Nagumo pays, expecting the resulting crisis to damage Horikita. The supposed leaked papers turn out to be old practice questions; Oreki returns Horikita's money but keeps Nagumo's payment 69 70.

Ichinose Rumors and Compensation

Nagumo's attempt to weaponize Ichinose's wealth includes a report falsely bearing Sakayanagi's name. Sakayanagi confronts him with the report and surveillance evidence, rejecting his claim that Ichinose needs to be “broken” to overcome her past. She receives 10 million points, after which Ichinose separately demands 5 million 366 367.

Training Camp Challenge

Nagumo challenges Horikita to a supposedly fair group contest and offers to stop assisting Class 3-B. His wider plan targets Class 3-A's girls' groups, using the resulting class-ranking pressure to force Horikita to nominate him. Oreki and Sakayanagi anticipate the scheme; Class 3-A's girls' groups instead finish first and second 379 392 394 396.

Presidential Election and Immediate Removal

Nagumo hedges his position between Kiriyama, Sakayanagi, and Oreki. He considers buying Kiriyama's cooperation for 20 million points, but ultimately supplies the second-year votes to Sakayanagi in exchange for the vice presidency. She wins 346 votes to 64, appoints him, and then removes him for misconduct immediately after taking office 440 454 459 460 461.

Later Island Exam and Sports Festival

After losing his council seat, Nagumo seeks new informants and negotiates with Oreki over the island exam. He offers Kiriyama 10 million points for loyalty and pays Oreki 11 million to prevent Class 2-A's interference. Later, with his own Class A increasingly secure, he manipulates Sports Festival results to support Asahina and Kiriyama while keeping Kiryuin from advancing 536 538 574 666 667.

Documented Financial Stakes

Transaction / Amount	Outcome	Chapter
5.2 million points paid to Oreki	Lost in the false exam-leak trap; account left at 16,000 points	70
Approximately 11.05 million points held	Oreki challenges his claim to possess less than 5 million	328
10 million points paid to Sakayanagi	Payment connected to the compromising evidence and rumor incident	366 367
5 million points demanded by Ichinose	Separate compensation demand, due by the first of the following month	367
4 million points offered for Kushida's Nullification Card	Purchase offer during island-exam negotiations	537
10 million points promised to Kiriyama	Intended to secure loyalty; Kiriyama later presses him to transfer it	538 574
11 million points paid to Oreki	Intended to prevent Class 2-A from interfering in the island exam	538

Notable Quotes

“However, I truly just want to see if I can surpass you.” 379

“There are very few people I admire, and Senior Horikita is one of them. You led a class that held you back, yet you still moved forward steadily.” 459

“Let's just assume we were played. Girls really are all liars.” 461