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Biodata
| Feature | Details |
|---|---|
| Name | Class D |
| Alias(es) | D班 |
| Affiliation | Private Koudo Ikusei High School |
| Occupation/Role | First-year student class; competitor in class rankings and Special Exams |
| Status | Active |
| First Appearance | 1 |
Power Progression
| Stage / Realm / Level | Chapter | Notes |
|---|---|---|
| Bottom-tier class | 3 | Horikita identifies Class D as the school's bottom tier and seeks its promotion to Class A. |
| Special Exam breakthrough | 19 | Earns 873 Class Points in the uninhabited-island Special Exam, leaving last place and reaching second behind Class A. |
| Sports Festival champions | 34 | Wins the Sports Festival, including the final tug-of-war against Class A. |
| Grade-leading midterm performance | 46 | Achieves a grade-high average of 86.3; four students rank in the grade's top ten. |
Background / History
Initial condition
Class D begins as a poorly coordinated group whose students have conflicting goals: some want to advance, some want to coast, and others undermine collective progress. Hanyu Xiuyi and Horikita Suzune identify unity as the condition necessary for the class to rise. 3
Hanyu agrees to cooperate with Horikita under three conditions: the entire class must benefit, point spending must be planned rather than unlimited, and the class must learn more about the school's ranking and Special Exam systems. 3 He finances early class activities and commits point support for necessary operations, while Horikita develops strategy. 3
First Special Exam
Before the uninhabited-island exam, Class D purchases survival supplies worth 498,000 points and organizes them according to a checklist. 10 On the island, the class establishes a camp, assigns labor, builds shelters, manages supplies, and expands its exploration through smaller groups. 11 13
Class D defeats Class C in a three-round challenge: Sudo Ken wins the fighting match, Yukimura Teruhiko wins the knowledge quiz, and a five-member team wins the teamwork challenge. The victory earns Class D the contested supplies and 500,000 points from Class C. 15
The class finishes the exam with 873 Class Points and gains a higher monthly personal-point distribution. 19
Internal threats and consolidation
Class C attempts to fracture Class D by bribing Ike Kanji and Yamauchi Haruki and having them assess classmates by usefulness and points. Hanyu and Horikita identify the scheme before it divides the class. 22
Rather than expelling the two students from the group, Hanyu persuades Ike and Yamauchi to return to Class D and report Class C's activities. 23 24 When Ryuen targets Karuizawa Kei through her middle-school bullying history, Class D publicly supports her, strengthening its cohesion. 25
Kushida Kikyo later admits that she had acted as an informant for Class C. Class D accepts her apology after the Sports Festival, allowing her to return as a full member of the group. 35
Sports Festival and midterms
Class D counters Class C's planned sabotage during the Sports Festival. Sudo wins the men's 100-meter dash and obstacle course; Matsushita Chiaki, Sotomura Hideo, and Hasebe Haruka also place in their events. 34 The class exposes Class C's foul in tug-of-war, defeats Class A in the final, and wins the festival. 34
For the midterms, the class adopts a coordinated review plan led by Yukimura, Horikita, Hanyu, and Hirata. 40 The effort produces a grade-best average of 86.3, while Horikita, Hanyu, Yukimura, and Kushida place second, third, seventh, and ninth respectively. 46
Organization
Class D initially forms a ten-person core team after the first Special Exam, consisting of Hanyu, Horikita, Hirata, Kushida, Yukimura, Sudo, Ayanokoji, Matsushita, Hasebe, and Sotomura. 19
| Responsibility | Member(s) | Duties |
|---|---|---|
| Overall coordination and external liaison | Hanyu Xiuyi | Coordinates class operations and handles contact with other classes. 20 |
| Strategy and intelligence analysis | Horikita Suzune | Develops plans, analyzes rival classes, and assigns roles. 20 |
| Internal coordination | Hirata Yousuke; Kushida Kikyo | Maintains internal communication and class cohesion. 20 |
| Data analysis | Yukimura Teruhiko; Matsushita Chiaki | Evaluates class performance and supports strategic decisions. 20 |
| Physical training | Sudo Ken | Oversees athletic preparation and assessments. 20 |
| Resource management | Hasebe Haruka | Leads food gathering and resource-related work. 20 |
| Environmental observation and guidance | Sotomura Hideo | Supports navigation and observation duties. 20 |
| Risk warning and special missions | Ayanokoji Kiyonaga | Provides threat assessments and handles exceptional assignments. 20 |
| Class morale and belonging | Karuizawa Kei | Helps maintain the class atmosphere, resolve disputes, and encourage a sense of belonging. 20 |
Notable Performance
| Event | Result | Key contributions |
|---|---|---|
| Uninhabited-island Special Exam | 873 Class Points | Camp organization, survival work, cooperation with Class B, and victory over Class C's challenge team. 11 13 15 19 |
| Three-Round Duel against Class C | Victory, 2–1 | Sudo won the combat round; Yukimura won the quiz; Sudo, Yukimura, Kushida, Ayanokoji, and Matsushita won the teamwork round. 15 |
| Sports Festival | First place | Won the tug-of-war final against Class A after countering Class C's interference. 34 |
| Midterm Exam | First in grade, 86.3 average | Four students entered the grade top ten; numerous other students improved by dozens of rankings. 46 |
Relationships
- Hanyu Xiuyi — Primary coordinator and financial supporter; his point resources and leadership help turn Class D into a structured collective. 3 20
- Horikita Suzune — Strategic partner in Class D's effort to reach Class A; oversees planning and intelligence work. 3 20
- Class B — Tactical ally. Ichinose Honami and Class B cooperate with Class D against Class C during the island exam, and the alliance continues afterward. 10 13 36
- Class C — Principal rival under Ryuen Sho. Class C uses traps, bribery, surveillance, and sabotage against Class D, while Class D repeatedly counters its schemes. 14 22 34
- Class A — Competitive rival. Katsuragi Kohei attempts to recruit Hanyu early on, while Class D later defeats Class A in the Sports Festival tug-of-war final. 2 34
- Chabashira Sae — Homeroom teacher. She monitors Class D's development, warns Hanyu of the attention drawn by the class's rise, and later approves of its midterm results. 1 19 46
- Nagumo Miyabi — External threat who allies with Ryuen and provides Class C with detailed information on Class D's members. 38 39