Ryuen

Biodata

Feature	Information
Name	Ryuen Kakeru (龙园) 84
Alias(es)	“Dragon Boy,” a nickname used by Sakayanagi that he vehemently rejects 173
Gender	Male
Affiliation	Advanced Nurturing High School; Class C in his first year, later Class D 82 209
Occupation/Role	Student; authoritarian class leader and strategist 82 209
Status	Active 349
First Appearance	Chapter 47

Background

Ryuen established control over his first-year Class C through violence soon after enrollment. His class lost nearly 500 Class Points during the initial conduct assessment because of its disorder, but Ryuen subsequently forced its students into discipline and stabilized the class. Albert became his chief enforcer after being won over by Ryuen’s refusal to yield, while Kaneda and Shiina supported the class academically. 82

His early schemes included withdrawing Class C’s complaint against Sudō when video evidence could not conclusively support it. He then arranged a dinner with Shuichi Kanda through Shiina, resulting in a conditional alliance: Ryuen would refrain from targeting Class D before the summer exam, while Kanda would not pursue a countersuit over the false accusation. 47 48

During the Uninhabited Island Exam, Ryuen made a supply-and-intelligence deal with Class A, deployed Ibuki to infiltrate Class D, and maintained a separate spy in Class B. He also deceived Katsuragi about Kōenji’s movements while withholding his real conclusions. His class ultimately won the exam. 64 72 74

Personality

Ryuen rules through intimidation, provocation, and a willingness to exploit weaknesses. He uses vulgar taunts against people he disdains, tries to destabilize opponents emotionally, and openly values results over sportsmanship or goodwill. 80 134 222

He is also pragmatic. Ryuen abandons a fight when the risk outweighs the gain, as when he stopped Ishizaki from confronting Hōsen under surveillance, and he readily lies or changes plans when it improves his position. 72 243

Despite his cruelty, Ryuen is strongly invested in his class’s survival. He knelt before Kanda to protect Class C from the consequences of the Paper Shuffle scheme, and he took responsibility for the rooftop assault to reduce the danger to his subordinates. 162 176

Ryuen claims never to have felt fear. After Ayanokōji overwhelmed him, Albert, and Ishizaki, he remained defiant and treated his defeat as a reason to seek revenge rather than surrender. 175

Abilities & Skills

Class Leadership and Coercion

Ryuen can impose order on a formerly undisciplined class through force of personality and calculated violence.

• Consolidated control of Class C after its severe first-month point losses. 82
• Retook undisputed leadership of his later Class D and received its Protection Point despite widespread dislike of him. 209
• Uses Albert, Ishizaki, Kaneda, Ibuki, and other followers in specialized roles. 57 64 172

Strategic Planning and Espionage

Ryuen combines surveillance, spies, misinformation, and contracts to manipulate special exams.

• Sent Ibuki into Class D and planted a separate spy in Class B during the Uninhabited Island Exam. 64
• Misled Katsuragi with fabricated information about Kōenji while continuing to investigate Class D’s leader. 72
• Deleted message histories during the VIP Exam to restrict knowledge of VIP identities to trusted followers. 83 88
• Used Karuizawa’s past bullying as leverage to obtain Class D’s Sports Festival participant order. 124

Psychological Provocation

Ryuen deliberately creates situations in which opponents lose control or compromise themselves.

• Let Sudō punch him during the Sports Festival, securing Sudō’s disqualification. 135 136
• Provoked Satō Ken after manipulating the tug-of-war match, causing Satō’s disqualification for fouling him. 134
• Used Kinoshita’s injury accusation to pressure Horikita when she lacked evidence to defend herself. 136
• Chose Class C as an opponent in Karate specifically to disrupt Kanda’s plans, even though it meant accepting a likely loss. 222

Negotiation and Resource Acquisition

Ryuen consistently treats Private Points, contracts, and student transfers as strategic resources.

• Secured a deal requiring Class A to provide 800,000 Private Points monthly in exchange for supplies and intelligence. 64
• Negotiated with first-year classes to place them in protected bottom positions during the later Uninhabited Island Exam, charging each class 2 million Private Points and demanding Invalidation Cards. 253 254
• Purchased island points from withdrawing participants, then used the information to coordinate interference against Nagumo. 280
• Pursues a long-term plan to collect 800 million Private Points so that every member of his class can graduate from Class A. 183 291

Combat and Resilience

Ryuen is an aggressive fighter with exceptional tolerance for pain and defeat, though he was decisively outclassed by Ayanokōji.

• Personally leads confrontations and directs coordinated attacks with Albert and Ishizaki. 174 175
• Continued fighting Ayanokōji after being thrown into his own allies and repeatedly knocked down. 175
• Was left unconscious after Ayanokōji defeated him and his group on the rooftop. 175
• Avoids fights he judges unwinnable, demonstrating that his aggression is not entirely reckless. 243

Relationships

• Shuichi Kanda — Rival, occasional ally, and fellow manipulator. They formed a conditional alliance against Class A, cooperated in multiple exams, and repeatedly tried to outmaneuver one another. 48 74 162 183
• Ibuki Mio — Subordinate, spy, and frequent source of internal friction. Ryuen sent her to infiltrate Class D, while she openly challenged his methods; he later showed unusual gentleness toward her during the school trip. 59 64 348
• Yamada Albert — Ryuen’s principal enforcer. Albert followed Ryuen after being impressed by his refusal to yield and frequently acts on his orders. 82 95 172
• Kaneda Satoru — One of Ryuen’s foremost strategists and an important academic asset to the class. 57 82
• Hiyori Shiina — Academically capable classmate whom Ryuen used to arrange his first meeting with Kanda; she later helped smooth over negotiations with first-year representatives. 47 83 253
• Horikita Suzune — Primary target during the first Sports Festival. Ryuen manipulated her through leaks, provocations, and Kinoshita’s staged injury accusation. 129 136 137
• Kiyotaka Ayanokōji — Enemy who defeated Ryuen’s entire combat group in the rooftop incident. Ryuen remained interested in Ayanokōji’s true identity and capabilities afterward. 174 175 182
• Sakayanagi Arisu — Transactional rival and occasional employer. Sakayanagi paid Ryuen to pursue mutual destruction with Class B, while their later confrontations were marked by direct provocation and hostility. 83 173

Story Role / Major Arcs

First-Year Class C Consolidation

Ryuen transforms Class C into his personal domain after its conduct-assessment collapse, relying on coercion, Albert’s force, Kaneda’s planning, and Shiina’s academics. 82

Uninhabited Island Exam

He trades supplies and intelligence with Class A, deploys spies against Classes B and D, deceives Katsuragi, and leads his class to victory in the exam. 64 72 74

VIP Exam and Sports Festival

Ryuen works with Kanda to pursue Result One in the VIP Exam, then turns his attention toward crushing Horikita’s class through blackmail, leaked information, calculated fouls, and provocation. 83 124 134 136

Paper Shuffle Defeat

After obtaining leaked questions through Karuizawa, Ryuen attempts to force Kanda into exchanging points for answers. Kanda reveals that Ryuen’s information is useless, leaving Ryuen to surrender his Private Points and kneel to protect his class. 160 162 164

Rooftop Incident

Ryuen uses a fake love-letter meeting to lure Ayanokōji to the rooftop over the listening-device incident. Ayanokōji defeats Ibuki, Albert, Ishizaki, and Ryuen; Ryuen later accepts responsibility before the Student Council. 174 175 176

Second-Year Uninhabited Island Exam

Ryuen secures first-year cooperation through contracts, acquires cards and island resources, and coordinates several classes to obstruct Nagumo and protect Kōenji’s route to first place. 253 254 280 289

Later Sports Festival

Ryuen prioritizes individual victories for Albert and Yajima over his own class’s overall standing, using students from multiple classes to occupy event slots and manipulate matchups. His class ultimately finishes last despite Albert and Yajima leading the individual rankings. 310 314