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Biodata
| Feature | Details |
|---|---|
| Name | Class 1-D (一年D班) |
| Alias(es) | “Gathering Place of Defective Products”; “Defective Product Depot” 18 19 |
| Affiliation | Advanced Nurturing High School; first-year cohort |
| Occupation / Role | First-year student class |
| Homeroom Teacher | Chabashira Sae 2 |
| Class Size | 40 students 2 |
| Status | Active; reduced to 0 Class Points as of May 1 31 |
| First Appearance | Chapter 1 |
Class Points
| Date / Period | Class Points | Notes |
|---|---|---|
| Start of school year | 1,000 CP | The school initially granted every class 1,000 Class Points; each point corresponded to 100 Private Points per student. 31 |
| First month | 0 CP | The class lost all points through 91 tardiness/absence incidents and 391 other violations, including sleeping, phone use, and private chatting. 31 |
| May first-year standings | 0 CP | Class 1-D ranked last behind Class 1-A (990 CP), Class 1-B (800 CP), and Class 1-C (700 CP). 32 |
Background / History
Class 1-D began the school year with substantial private-point allowances and considerable freedom. Its students quickly displayed sharply different attitudes: Hirata Yousuke attempted to create a cooperative atmosphere, Kushida Kikyou sought to become a central social figure, while students such as Sudo Ken, Kouenji Rokusuke, Horikita Suzune, and Ayanokouji Kiyotaka openly distanced themselves from the group in different ways. 2
Tatsuya Sakuya deliberately controlled his entrance-exam scores to enter Class 1-D. Although he initially stated that he intended to remain uninvolved unless the class affected his life, he regarded the class's predictable decline as an opportunity to eventually establish authority. 1 18 31
During the first lessons, the class mistook Chabashira Sae's lack of immediate intervention for permissiveness. Students arrived late, slept, played games, used phones, chatted, and left class early, unaware that every infraction was being recorded against the class's point total. 6
Class 1-D briefly gained positive attention when Sakuya won the freshman 50-meter freestyle event with a school-record time of 21.91 seconds. His result made him a recognized swimming ace and increased his influence within the class. 11 14
On May 1, Chabashira revealed that the class had exhausted all 1,000 of its Class Points. The loss of monthly Private Points triggered financial panic, infighting, and an immediate academic crisis because students who fail a subject's required score in the upcoming midterms face expulsion. 31 32
Class Character
- Undisciplined at the outset — The class accumulated widespread attendance and classroom-conduct violations during its first month. 6 31
- Internally fragmented — Socially cooperative students such as Hirata and Kushida coexist with isolated, confrontational, or self-interested students, preventing a unified class identity. 2
- Academically uneven — Several students struggle severely with advanced mathematics, while Sakuya and Horikita demonstrate substantially stronger academic ability. 20 21 27
- Capable of individual excellence — Sudo, Kouenji, Ayanokouji, and Sakuya all perform strongly in physical testing, though their abilities do not initially translate into class-wide coordination. 7 8 11
- In crisis after May 1 — The point loss exposes the class's financial dependence, weak trust, and lack of practical leadership. 31 32
Known Students
| Student | Documented role within Class 1-D |
|---|---|
| Tatsuya Sakuya | A strategically minded student who deliberately entered Class 1-D through score control; following the point collapse, he intends to use the crisis to seize control of the class. 1 31 |
| Horikita Suzune | Sakuya's seatmate; academically driven and determined to reach Class 1-A, but judged by the school as lacking cooperation and social adaptability. 2 21 |
| Hirata Yousuke | A sociable mediator who leads introductions and later urges the class to unite, study, and support weaker students. 2 32 |
| Kushida Kikyou | A highly social student who aims to win the favor of every classmate and become an indispensable core member. 2 |
| Ayanokouji Kiyotaka | A quiet student who controls his performance to avoid attention; he later accepts Sakuya's offer of friendship. 7 24 |
| Sudo Ken | One of the class's strongest athletes and the overall champion of its physical fitness test. 7 8 |
| Kouenji Rokusuke | An arrogant and eccentric student who leaves class early, refuses some tests, and considers himself destined for the school's pinnacle. 2 6 8 |
| Ike Kanji | A disruptive student who spends freely, plays games in class, and participates in the class's early betting culture. 5 6 7 |
| Yamauchi Haruki | Frequently late or asleep in class; his conduct becomes a focal point of blame after the class loses its points. 6 31 32 |
| Karuizawa Kei | A socially prominent student who employs Sakuya as a pretend boyfriend for protection and later studies under his tutoring. 14 28 |
| Airi Sakura | A socially anxious student interested in photography; she asks Sakuya for camera advice and later seeks his help for Hasebe. 4 9 |
| Hasebe Haruka | A student who initially avoids swimming classes due to harassment but agrees to participate after Sakuya's intervention. 9 |
Relationships
- Chabashira Sae — Homeroom teacher. She monitors the class's conduct, reveals its point deductions, and warns that failing the academic standard in any subject results in expulsion. 6 26 31
- Class 1-A — The first-year leading class, holding 990 CP in May. Sakamayanagi Arisu's assessment labels Class 1-D the “Gathering Place of Defective Products.” 19 32
- Class 1-B — A rival class led informally by Ichinose Honami's trust-based approach; it retains 800 CP in May. 18 32
- Class 1-C — A rival class operating under Ryuen Kakeru's intimidation-based leadership; it retains 700 CP in May. 18 32
- Tatsuya Sakuya — A student positioned to become a central authority figure after anticipating the class's collapse and seeking tangible solutions to its academic crisis. 24 31 34
Major Arcs
First-Month Misconduct
Class 1-D spends its initial allowance freely and fails to recognize that the school evaluates attendance and behavior. Chabashira records the mounting violations without immediately disciplining the students. 3 6
Swimming Performance Test
Sakuya's school-record 50-meter freestyle victory gives Class 1-D an unexpected public success and establishes him as one of its most influential students. 11 14
Points Collapse and Midterm Crisis
The class learns that its Class Points have fallen to zero, leaving many students without funds for regular meals. Chabashira further reveals that the midterm passing line will be half the class average, placing several students at risk of expulsion. 31 32
Search for a Practical Solution
Hirata advocates unity and peer tutoring, but Sakuya dismisses moral persuasion as insufficient. He begins pursuing concrete resources, including past midterm papers, to address the class's academic danger. 32 34
Notable Quotes
“Class 1-D earned zero points this month.”
— Chabashira Sae 31
“Then... the game officially begins.”
— Tatsuya Sakuya 31