Shimiya

Biodata

Feature	Information
Name	Shimiya Kuki (四宫)
Alias(es)	King Rider
Species/Race	Human
Gender	Male
Affiliation	Tokyo Koudo Ikusei High School; Class 2-A (formerly Class 1-B)
Occupation/Role	Student; Class A strategist and core member
First Appearance	Chapter 1

Background

Shimiya entered Tokyo Koudo Ikusei High School with exceptional academics, severe scars, and an emotionally suppressed demeanor. During his admission interview, he stated that he wanted to find his missing emotions and become whole; Director Yanagi subsequently placed him in Class 1-B as an environment where he could recover and grow 1.

Ichinose Honami's kindness elicits one of Shimiya's earliest faint emotional responses. Over time, Class 1-B becomes the foundation of his recovery, with Shimiya supporting Ichinose's leadership rather than seeking to replace her 1 259.

His past is later revealed to be tied to Night Abyss, an institution that cultivates people into “weapons.” His family guaranteed his enrollment, though one family member had once been his Night Abyss target. Tsukishiro Tokinari was also an investor in organizations like Night Abyss, making him Shimiya's personal target 317 319 320.

Much of Shimiya's background has been deliberately erased from official records; the remaining file reportedly contains little beyond basic enrollment information 543.

Appearance

Shimiya is a tall, fair-skinned youth with refined features, deep black hair, and distinctive ice-blue eyes. His normally sharp, controlled presence becomes notably gentler when he is with Ichinose 271 488.

• Hair: Deep black, occasionally falling across his forehead 271.
• Eyes: Ice-blue; typically calm, precise, and difficult to read 186 271.
• Scars: Has numerous scars across his body, including a long, clean wound beneath his left ribs that appears to have been inflicted by a bladed weapon 264.
• Uniform: Wears the school's dark red uniform jacket 273.

Personality

Shimiya is calm, detached, and exceptionally observant. He speaks concisely, often framing even dangerous situations as probabilities, strategic variables, or objective facts. His classmates initially find his help efficient but emotionally distant 15 29.

Despite this cold exterior, Shimiya is not driven by recognition or control. He consistently supports Ichinose rather than taking over Class A, aids students outside his class when he sees a viable solution, and quietly protects people he considers important 34 253 259.

His restraint has limits. When confronting threats such as Sakayanagi's rumor campaign or Tsukishiro's interference, he demonstrates a calculating and ruthless side, using public pressure, recorded evidence, and intimidation to force an outcome 165 317 320.

Abilities & Skills

Academic Ability

Shimiya is among the school's strongest students academically.

• Earned a perfect score on a quiz and regularly tutors classmates in mathematics and physics 15 23.
• Gives concise explanations supported by diagrams and formulas, focusing on the core of a problem rather than lengthy instruction 15.
• Ranked first in his grade under the OAA system, with an Overall Ability score of 91 373 374.

OAA Category	Recorded Information
Overall Ability	91 373
Grade Ranking	1st place 374

Analysis and Deduction

Shimiya rapidly processes information, identifies hidden motives, and anticipates opponents' actions.

• Identified Class C as the likely orchestrator of the Sudo Incident by analyzing the location, evidence, and Ryuen's methods 29.
• Recognized classmates' handwriting from routine homework, notes, and sign-up sheets 32.
• Exposed Kaneda as a Class C spy during the Survival Exam and negotiated directly with Ryuen afterward 58.
• Detected the loophole in the Deserted Island Exam's GPS evidence, delaying judgment against Komiya and Kinoshita 502.
• Deduced the scheme targeting Tachibana Akane and the larger Class Point loss it could inflict on third-year Class A 207.

Strategy and Leadership

Shimiya serves as Class A's primary strategist and a trusted field leader.

• Was chosen as Class B's leader for the Survival Exam due to his wilderness experience; he immediately prioritized base selection and supply inventory 45.
• Helped establish a highly organized camp that shocked Class D observers with its shelters, decorations, and efficient operations 53.
• Coordinated Class B and Class C's preparation during the Sports Festival, effectively integrating both classes' training and tactical planning 102 104 108.
• Developed an evaluation system for Class D after Yamauchi's expulsion, helping Hirata accept a more active leadership role 253.
• Used Ozawa Natsumi as a double agent in the Mouse-Elephant Game, manipulating Ishikura into actions that secured Class D's victory 364.

Combat Ability

Shimiya possesses exceptional close-quarters combat skill, likely shaped by his Night Abyss training.

• Claims that no student at the school can defeat him in kendo 264.
• Corrected the Class A karate group's posture and force application during training 268.
• Defeated six third-year students—including karate and judo practitioners—in under two minutes during the Deserted Island Exam 523 527.
• His presence can induce intense fear; when revealing Night Abyss, he created a palpable threatening atmosphere that shocked teachers and students alike 317.
• Remained composed enough after defeating the six students to seize their walkie-talkie, warn Nagumo, and leave without being recorded attacking first 526.

Survival and First Aid

• Has prior wilderness survival experience and used it to lead Class B in the first-year Survival Exam 45.
• Scouts opposing camps and organizes supplies, bases, and daily camp operations 45 53.
• Performs emergency treatment for injured students during the cross-grade Deserted Island Exam 504.

Information Control

• Transferred 30,000 Personal Points to Ayanokoji rather than exposing Class B's collective account during Class D's monitor plan 34.
• Maintains contacts with upperclassmen to collect intelligence on students, examinations, and school affairs 192 358.
• Played a recording of Sakayanagi denying involvement in Ichinose's rumors, exposing her lie before the first-year students 165.

Equipment & Personal Items

• Portable terminal — Used for point transfers, research, secure communication, and intelligence gathering 34 132 358.
• Books — An avid reader who spends free days immersed in books and exchanges books with Shiina Hiyori 136 177.
• Guitar — Played guitar during a class celebration 271.

Relationships

• Ichinose Honami — Classmate, class president, and romantic partner. Ichinose's kindness first stirs Shimiya's suppressed emotions; they later become openly affectionate and continue supporting Class 2-A together 1 186 233 371.
• Kanzaki Ryuji — Close classmate and intellectual counterpart. Kanzaki respects Shimiya's concise reasoning, assists his class training, and seeks his help in challenging Sakayanagi 8 268 273.
• Ayanokoji Kiyotaka — Initially distant acquaintance from Class D who becomes a strategic ally against Tsukishiro. Their shared institutional backgrounds create mutual caution and understanding 15 34 317 319 504.
• Hoshinomiya Chie — Class advisor assigned by Sakayanagi Chairman to “look after” Shimiya. She is openly protective of him and opposes treating him as a dangerous person 317 318 321.
• Ryuen Kakeru — Rival strategist and occasional ally. Ryuen spread Shimiya's “King Rider” title, recognizes his capabilities, and later cooperates with him against greater threats 58 60 165 504.
• Sakayanagi Arisu — Strategic rival. Shimiya publicly dismantles her rumor campaign against Ichinose and later plans to defeat her in chess during the Command Tower Exam 165 273.
• Hirata Yosuke — Friend from Class D. Shimiya helps Hirata recover from Yamauchi's expulsion and formulate a system to strengthen Class D 253.
• Shiina Hiyori — Close friend and fellow reader; she visits Shimiya to discuss The Ghost Tower and borrow books 136.
• Hiyukie Rua — Third-year contact and intelligence partner. Shimiya shares his analysis of Nagumo's schemes with her and seeks information about upperclassmen 132 207.
• Tsukishiro Tokinari — Personal enemy connected to Shimiya's Night Abyss past. Shimiya identifies Tsukishiro as his target and joins efforts to oppose him 311 320.

Story Role and Major Arcs

• Enrollment and Class 1-B — Enters the school seeking to recover his emotions and is assigned to Class B by Director Yanagi 1.
• Sudo Incident — Helps Ichinose investigate Class D's conflict with Class C, identifies the likely framing scheme, provides the monitor source, and funds Class D's bluff 29 34.
• First-Year Survival Exam — Leads Class B's wilderness operations, exposes a spy, and negotiates with Class A and Class C leaders 45 53 58.
• Sports Festival — Takes charge of Class B's arrangements and coordinates training with Ryuen's Class C to avoid mutual losses and strengthen both sides 102 104 108.
• Ichinose Rumor Incident — Investigates the source of the rumors, confronts Hashimoto, and uses recorded evidence to expose Sakayanagi's deception publicly 139 152 165.
• Class Poll Aftermath — Reveals that expulsion can be offset under the school rules and becomes a source of hope for his class during the voting crisis 225.
• Tsukishiro Conflict — Reveals his Night Abyss background, identifies Tsukishiro as his target, and allies with Ayanokoji to resist the acting chairman's plans 311 317 319 320.
• Second-Year Advancement — Enters Class 2-A, ranks first in the OAA system, and remains the grade's most highly rated student 371 373 374.
• Cross-Grade Deserted Island Exam — Is targeted by Nagumo, uncovers flaws in the GPS evidence after an attack, allies with Ayanokoji and Ryuen, and defeats six upperclassmen sent to ambush him 502 504 523 526 527.

Trivia

• Ryuen's promotion of Shimiya's reputation caused the title “King Rider” to spread among the first-years 60.
• Although he is known for detachment, Shimiya reads fiction, watches old films with Ichinose, cooks, and plays guitar 177 233 253 271.
• His records were sufficiently incomplete that Yagami considered his erased history more significant than his visible academic and physical achievements 543.