Yuki Gyakukai

Biodata

Feature	Value
Name	Yuki Gyakukai (逆回优树)
Alias(es)	Gyakukai; Yusoku Gyakukai (name variant) 27 33
Gender	Male
Affiliation	Class B, later promoted to Class A at Tokyo Metropolitan Advanced Nurturing High School 1 27
Occupation/Role	Student; Class B leader, later Class A leader 6 27
First Appearance	Chapter 1

Background / History

Yuki arrives at the school with his fiancée, Tomie Hanyu. During the bus ride, his appearance draws considerable attention, while he quietly resolves a traffic jam through a message rather than joining Sho Ryuuen's confrontation with the driver 1.

Before enrollment, he had already doubted the school's promise of free tuition and guaranteed advancement or employment. On his first day, he investigates its point system, class hierarchy, special exams, and transfer requirements, then presents his findings to Class B and is accepted as its leader 6.

He has known Tomie since childhood and has lived with the Hanyu family for more than a decade. During middle school, he served as a disciplinary committee member; Tomie claims he dated more than 130 girls simultaneously at school during that period 4 25. His connection to the Hanyu Zaibatsu gives him considerable social leverage, which he has used against serious offenders in the past 23 33.

Appearance

Yuki is repeatedly described as an exceptionally handsome, languid-looking youth whose presence attracts attention from students and adults alike 1 3.

• Jet-black hair, with loose strands often falling over his forehead 4
• Wears the school's red uniform, white shirt, and dress pants 1
• Has a notably flawless, athletic physique 40
• Possesses long, slender hands that remain uninjured even after destroying a podium 16

Personality

Yuki is observant, confident, and highly proactive. He habitually studies people and systems before acting, whether investigating the school on his first day or identifying useful talents within other classes 3 6 37.

As a leader, he is pragmatic rather than purely altruistic. He sells intelligence, builds temporary alliances, uses blackmail when it benefits his objectives, and distributes profits through a class fund and reward system 11 17 20 24. At the same time, he does not want to become indispensable to the class; his long-term goal is to develop capable classmates who can share his workload 27.

He is playful and provocative in personal interactions, especially toward people who challenge him. Despite his careless remarks, he believes that mistakes should be answered with sincere apologies and accepts responsibility when he hurts someone 29 33.

Abilities & Skills

Exceptional Physical Strength

Yuki possesses overwhelming physical power, able to dominate opponents who are trained fighters or substantially larger than himself.

• Lifted the over-two-meter Albert Yamada off the ground by his collar and subdued Class C through intimidation 16
• Destroyed a podium with his hand without visible injury 16
• Caught Mio Ibuki's attacks effortlessly despite her martial-arts training 36
• Intercepted Ken Sudou during basketball and dunked over him 42
• Runs at a speed and acceleration that Himeno Yuki considers inhuman 49

Strategic Leadership

Yuki quickly grasps institutional rules and turns information into influence.

• Identified the school's hidden structure, class-point system, and special-exam mechanics on the first day 6
• Sold Class B's knowledge of hidden rules to Classes A and C for personal points 11 16 17
• Established a system that reserves 60% of earnings for the class fund while rewarding participating students 17
• Reorganized his class after its promotion, assigning classmates to leadership, cultural-study, and physical-training roles 27
• Formed an alliance with Sho Ryuuen against Class D while instructing Kanzaki to watch for Class D's hidden talents 37

Information Control and Coercion

Yuki collects compromising information and uses it as leverage against rivals.

• Recorded Manabu Horikita attacking Suzune and demanded 50,000 points in exchange for silence 20
• Forced Class D's boys to apologize for harassing girls by threatening to release video evidence 24
• Shared evidence and intelligence with students in Classes A and C when it served his plans 24
• Refused a pat-down during negotiations with Class C, treating physical searches as an unacceptable humiliation 36

Chess and Athletics

Yuki is talented in several competitive activities, though his academics are only slightly above average.

• Checkmated Sakayanagi Arisu, then defeated her again in a rematch within twenty moves 33 35
• Demonstrated swimming form and speed impressive enough for the Swimming Club's adviser to predict he could break high-school records with training 25
• Participates in joint study sessions but is described as only slightly above average academically 40

Relationships

• Tomie Hanyu — His fiancée and childhood friend. They have known each other since childhood; Tomie is intensely possessive, while Yuki is protective and attentive toward her 1 25 40.
• Honami Ichinose — Classmate and trusted subordinate. Yuki appoints her vice-class representative after Class B's promotion to Class A 17 27.
• Ryuji Kanzaki — Classmate who admires Yuki's leadership and assists with rule sales and negotiations 11 16.
• Sho Ryuuen — Initially an opposing class leader; later forms a temporary alliance with Yuki during the special-exam month 16 37.
• Masumi Kamuro — A volatile, flirtatious acquaintance who provokes Yuki physically and sends him love letters; their interactions are marked by teasing and competition 18 19 28.
• Suzune Horikita — A tense associate whom Yuki repeatedly teases and manipulates. He holds leverage over her through the video of Manabu's assault and asks her to imitate Yukino Yukinoshita 20 29.
• Sakayanagi Arisu — A rival whose conflict with Yuki begins after his insulting remarks and develops into a chess rivalry 32 33 35.
• Ai Morishita — A perceptive student who immediately senses that Yuki is unusual; their initially comedic encounters later become more affectionate 3 4 35.
• Haruka Hasebe and Airi Sakura — Students who trust Yuki for protection when they believe they are being stalked 49.
• Himeno Yuki — An ally in the stalker investigation who drops her frail public persona around him 49 50.

Story Role / Major Arcs

Class B Leadership

Yuki exposes the school's hidden rules, gains Class B's trust, and becomes its leader on the first day. He uses the class's informational advantage to sell hidden rules, establish a class fund, and improve its position 6 11 17.

Class C Confrontation

He interrupts Class C's internal violence, physically overwhelms Albert Yamada and Sho Ryuuen, and forces the class into negotiations over hidden rules 16. His later alliance with Ryuuen is based on mutual strategic benefit rather than trust 36 37.

Interference in Other Classes

Yuki repeatedly intervenes in Class D's affairs, using video evidence to force apologies from students who harassed Airi Sakura and other girls 24. He also exploits evidence of Manabu Horikita's assault on Suzune to obtain points and influence 20 21.

Promotion to Class A

After a month of coordinated effort, Class B rises to Class A. Yuki uses the promotion to shift responsibility to the class as a whole, appointing Ichinose as vice-class representative and Tomie as his personal assistant 27.

Stalker Investigation

When Haruka Hasebe asks for help, Yuki immediately tracks her location through the school phone system and rushes to assist her and Airi Sakura 49. He works with Himeno to expose the suspected stalker, who attacks with a stun baton and iron rod before being stopped 50.

Trivia

• Yuki receives frequent love letters despite his public engagement to Tomie 25.
• He declines repeated invitations to join school clubs, including the Swimming Club 25.
• Ai Morishita's intuition makes Yuki uneasy because she immediately notices that his condition is not entirely human 3 4.
• He enjoys fishing and describes it as a way to cultivate his mind 43.