Ryuen

Biodata

Feature	Details
Name	Ryuen Sho (龙园)
Gender	Male
Affiliation	Class C
Occupation/Role	Student; leader of Class C
Status	Expelled; Class C was also demoted following the exposure of his misconduct 50
First Appearance	Chapter 3

Background

Ryuen leads Class C through an aggressive, results-first approach. Before confronting Class D, he had led Class C to victories in several Special Exams and developed a reputation for dirty tactics, including contact with upperclassmen connected to match manipulation 3 6.

He becomes interested in Hanyu Xiuyi after Hanyu gains five million points in a single night. Ryuen initially challenges Hanyu to a high-stakes shogi match, but withdraws when the school’s wager limit would require him to risk 1.5 million points 3.

Appearance

Ryuen is a tall student whose expression is frequently marked by a smug or dangerous smile. He is often depicted with an amused, watchful gaze when confronting opponents 3 38.

• Tall build 3
• Frequently wears his Class C uniform at school 3
• Often appears in casual clothes during secret meetings or off-hours operations 31 38
• Known for a “signature” dangerous smile 31 32

Personality

Ryuen is confrontational, calculating, and willing to use intimidation, blackmail, sabotage, and threats to secure an advantage. He treats information on others’ weaknesses as leverage and regards classmates and informants as disposable chess pieces 22 31 42.

His leadership depends on fear and control rather than loyalty. This makes him dangerous in the short term, but repeatedly creates dissent within Class C and causes his agents—including Ibuki Mio and Kushida Kikyo—to turn against him 20 27 39.

Despite his ruthlessness, Ryuen honors agreements once they are formally accepted, even after losing the island challenge platform duel to Class D 15. His exchanges with Hanyu also reveal a deeply solitary view of strength: he believes personal power is sufficient even when it costs him every companion 35.

Abilities & Skills

Strategy and Psychological Warfare

Ryuen specializes in destabilizing opponents before direct competition begins.

• Uses vandalism, rumors, and provocations to test Class D’s unity and information-gathering ability 8 9.
• Bribes or pressures vulnerable students such as Ike Kanji and Yamauchi Haruki to obtain intelligence and divide Class D from within 22 23.
• Exploits Karuizawa Kei’s past as a bullying victim to blackmail and destabilize her 25 42.
• Attempts to regain Kushida Kikyo’s cooperation by threatening to expose her past 39.
• Plans layered schemes rather than relying on a single tactic, such as drugging a Key Player, sabotaging an obstacle, and framing Class D for a tug-of-war foul during the Sports Festival 31 32.
• His impatience for quick results and reliance on coercion leave him vulnerable when targets refuse to be controlled 9 34 39.

Intelligence Network

Ryuen maintains information channels inside and outside his class.

• Contacts upperclassmen with reputations for coercion and match manipulation 4 6.
• Keeps a notebook containing profiles, weaknesses, contacts, and exploitable information on students across multiple classes 27 31.
• Receives detailed files on Class D and records of past Special Exams from Nagumo Miyabi 38 39.
• Uses his knowledge to identify Class D’s core members and plan an order in which to target them 47.

Unarmed Combat

Ryuen uses an unpredictable, street-fighting-oriented style in direct confrontations.

• Attacks joints and weak points with fast, unconventional movements 16.
• Deliberately leaves openings to bait opponents into counterattacks 16.
• Lost his one-on-one island fight against Hanyu after overextending and exposing his supporting leg 16.

Equipment / Items

• Notebook — A constantly carried record of student weaknesses, informants, and plans for manipulation 27 31.
• Small knife — Used to threaten Sakura Airi while she was held hostage during the uninhabited island exam 16.
• Stimulant packet — Given to Kushida for use against Class D’s Key Player during the Sports Festival; Ryuen falsely described it as sleeping pills 31.
• USB drive and Class D files — Supplied by Nagumo; contained detailed personal files and past Special Exam records 38 39.

Relationships

• Hanyu Xiuyi — Primary rival. Ryuen challenges Hanyu from their first meeting, loses to Class D in the island showdown and Sports Festival, and continues targeting Hanyu’s companions until his expulsion 3 15 16 34 50.
• Nagumo Miyabi — Temporary ally. Nagumo provides Ryuen with confidential information and encourages him to eliminate Hanyu as an obstacle 38 39.
• Ibuki Mio — Class C subordinate whom Ryuen uses for surveillance and sabotage. Ibuki becomes disillusioned with his treatment of classmates as chess pieces and secretly supplies intelligence to Hanyu 27 32.
• Kushida Kikyo — Coerced informant. Ryuen exploits her insecurity and past, but she ultimately rejects his attempt to bring her back under his control 31 39.
• Ishizaki Daichi — Enforcer and collaborator. Ishizaki represents Class C in the island fighting match and later assists Ryuen’s attempted “accident” against Ayanokoji 15 48.
• Karuizawa Kei — Repeated target of blackmail and psychological pressure due to her influence among Class D’s girls and her hidden past 25 42 43.
• Ayanokoji Kiyonaga — A target Ryuen considers unusually difficult to assess. Ryuen attempts to injure him with a falling brick, but Ayanokoji anticipates the attack and records evidence of the plot 31 48.
• Class C — Ryuen’s leadership is dictatorial and fear-based; dissatisfaction rises after his failures, and his isolation becomes apparent following the Sports Festival 20 35.

Story Role / Major Arcs

Early Rivalry

Ryuen approaches Hanyu after hearing about his five-million-point victory and attempts to provoke him into a costly shogi wager. He begins monitoring Class D and warning Hanyu that the coming Special Exam will become “interesting” 3 4.

Uninhabited Island Special Exam

Ryuen sets traps in the forest and initiates a challenge-platform showdown for supplies. After Class D wins all three rounds, Ryuen escalates by ambushing the class, taking Sakura Airi hostage, and demanding a one-on-one fight with Hanyu; he loses the fight 14 15 16.

Campaign to Fracture Class D

After the island exam, Ryuen attempts to split Class D by bribing Ike and Yamauchi, targeting Karuizawa’s past, and manipulating Kushida’s fear of rejection. His notebook and informant network become the focus of Class D’s counteroperation 22 23 25 27.

Sports Festival Defeat

Ryuen orchestrates a three-part plan involving a stimulant, obstacle-course sabotage, and a false foul during tug-of-war. Ibuki and Kushida feed intelligence to Class D instead, allowing Hanyu to counter every stage of the operation; Class D wins the Sports Festival 31 32 34.

Alliance with Nagumo and Expulsion

Following his defeat, Ryuen accepts Nagumo’s support and receives detailed Class D files. He renews his campaign by threatening Karuizawa, planning to target Class D’s core members, and arranging an accident against Ayanokoji 38 42 47 48. Ayanokoji exposes Ryuen’s accumulated crimes on the school forum using recordings and supporting evidence, resulting in Ryuen’s expulsion 50.

Notable Quotes

“Perhaps. But so what? I am enough by myself.” 35