Ryuen

Biodata

Power Progression

Background / History

Yuefeng transmigrates into the world of Classroom of the Elite as the twin brother of Kiyotaka Ayanokoji 1 2. Pulled from his ordinary life by Ayanokoji Father, he is sent to Tokyo Metropolitan Advanced Nurturing High School with the explicit directive to observe and guide Kiyotaka back, serving as a pawn for his father 1 2 3. Contrary to expectations, he is placed not in Class D with Kiyotaka, but into Class C under the dictatorial rule of Ryuen Kakeru 2 3.

Navigating a hostile environment, Yuefeng initially tries to keep a low profile while secretly compiling survival and intelligence notes on key figures across all classes 3 4. After being forced by Ryuen to prove his worth through the Special Enrollment Exam, he ranks 37th (earning an A- rating and 50,000 S Points), cementing his utility to Class C 8 14 15. He subsequently survives physical sabotage attempts by Ishizaki during the Sports Festival relay, endures campus rumors, and is eventually coerced by Ryuen into serving as Class C's representative in the elite cross-grade Special Project Research Group 21 22 25 26. As he interacts with figures like Hiyori Shiina and evades the chess-like maneuvers of Sakayanagi Arisu, Yuefeng struggles to carve out his own agency while caught in the crossfire between Ryuen, his father, and Kiyotaka 5 28 35.

Appearance

Yuefeng shares an identical, striking physical resemblance to his younger brother, Kiyotaka Ayanokoji, possessing the same facial features and build 2 3. However, his natural demeanor lacks the chilling, AI-like emptiness of Kiyotaka, carrying a more expressive and anxious human temperament instead 2. Upon his arrival, he stands out due to expensive, customized designer private-school attire rather than standard uniform elements 2 3.

• Possesses an identical face to Kiyotaka Ayanokoji 2 3.
• Displays refined, high-maintenance hair and neat physical grooming 2.
• Initially wears premium, custom designer civilian clothes and non-standard private school uniforms 2 3.
• Holds an athletic yet initially soft-looking physique that undergoes conditioning 3 4.

Personality

Yuefeng acts as a former ordinary reader and modern transmigrator thrown into an ultra-high-stakes survival environment, constantly balancing sharp inner snark with genuine caution. He is deeply pragmatic, prioritizing self-preservation and the avoidance of unnecessary conflict over pride. While he can appear compliant and cautious under pressure—particularly when dealing with authority figures like Ryuen or his father—he possesses hidden resilience, tactical adaptability, and a quiet sense of protectiveness toward allies like Hiyori Shiina. Beneath his self-deprecating humor lies a sharp analytical mind that relies heavily on genre knowledge and strategic calculation.

Abilities & Skills

Reflex and Perception Enhancement

Yuefeng possesses an unusual, stress-triggered perceptual anomaly that enhances his reaction speeds during physical crises 4 5.

• Triggers automatically during physical assaults, tackles, or immediate dangers, shifting his perception into slow motion 4 5.
• Allows him to dodge sudden blows, evade petty fouls during sports, and analyze projectile trajectories in tight spots 4 21.
• Consumes mental energy and remains unreliable, as it refuses to activate during minor shocks or non-threatening environmental noises 4 5.

Strategic Intel & Game Theory

Leveraging his foreknowledge and rigorous academic training, Yuefeng excels at gathering information and parsing complex socio-political dynamics.

• Capable of analyzing class power structures, rumors, and behavioral patterns of key figures like Ryuen and Sakayanagi 15 25 28.
• Masters advanced concepts in logic and game theory (such as the Prisoner's Dilemma) through special coursework alongside elite peers 15 34.
• Maintains detailed "Survival Notes" tracking student vulnerabilities, interpersonal conflicts, and school regulations 4 25.

Legal and Rule-Based Defense

Rather than relying purely on physical confrontation, Yuefeng frequently uses institutional rules and legal citations to neutralize bullies and harassers 11 16.

Equipment / Weapons / Items

• Survival Notes / Intel Journal: A heavily detailed notebook containing organized profiles, behavioral notes, and faction maps of the student body 4.
• Designer Wardrobe: A collection of expensive, custom-tailored civilian clothing and casual wear from his pre-enrollment life 2.
• Airi Sakura's Cookies: A hidden, comforting stash of homemade cookies kept as a private psychological refuge 25.
• Audio Recording Evidence: A covert recording of Ishizaki discussing extortion, used as high-leverage blackmail in tight situations 40.

Relationships

• Ayanokoji Kiyotaka — Younger twin brother. Their relationship is tense and distant; Kiyotaka treats Yuefeng as an "unplanned variable" and "observation data," while Yuefeng tries to navigate his brother's shadow and fulfill his father's vague directives 2 7 17.
• Ryuen Kakeru — Class C leader and taskmaster. Ryuen treats Yuefeng with predatory scrutiny and controls him through absolute dominance, eventually co-opting him as an intelligence-gathering pawn 3 25 26.
• Hiyori Shiina — Class C classmate and close intellectual confidante. They bond over literature, game theory, and quiet library chats, forming a mutual support system 5 9 15.
• Ishizaki Daichi — Class C thug and rival. Ishizaki frequently targets Yuefeng out of jealousy and hostility, leading to multiple physical clashes before being subdued by Yuefeng's counter-attacks and leverage 4 21 40.
• Ayanokoji Father — Patriarch of the family. Stern, authoritarian, and manipulative, he views Yuefeng as a tool to drag Kiyotaka back and prove his worth 1 14.
• Sakayanagi Arisu — Class A leader. She views Yuefeng with intellectual curiosity, probing his insights and treating him as a fascinating variable in her games 28 34.
• Airi Sakura — Class D student whom Yuefeng protects from harassment, sparking an indirect bond and quiet gratitude 16 17.
• Ibuki Mio — Class C combat student whose sharp presence and implicit restraint create a tense dynamic with Yuefeng 20 25.

Story Role / Major Arcs

• The Transfer and Class C Induction: Transmigrates into the body of Ayanokoji Yuefeng, receives his mandate from his father, and arrives at Advanced Nurturing High School to land in Class C under Ryuen's thumb 1 2 3.
• Establishing Value: Adapts to the school's harsh meritocracy, unlocks his perceptual abilities, forms a bond with Hiyori Shiina, and passes the grueling Special Enrollment Exam to secure class points and upgrade his status 4 6 8 14.
• The Sports Festival Conflict: Survives Ishizaki's physical sabotage during the Obstacle Relay through sheer resilience, weathering campus rumors orchestrated by Kushida and defusing threats with evidence and rule citations 16 21 22 23 40.
• Infiltration of the Elites: Recruited directly by Ryuen into the cross-grade Special Project Research Group, Yuefeng steps into the high-stakes arena of inter-class politics, navigating the intellectual pressures of Sakayanagi, Katsuragi, and Ichinose while remaining trapped in Kiyotaka's overarching observations 26 28 35.

Notable Quotes

"If a normal person like me goes in there, won't I just be background noise? No, I'll be cannon fodder." 2

"Observation data, huh... Then watch closely, Kiyotaka. See if this 'data' of yours can break out of your preset model." 17