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Biodata
| Feature | Details |
|---|---|
| Name | Class D |
| Alias(es) | D班 |
| Affiliation | Advanced Nurturing High School; first-year grade |
| Occupation/Role | Lowest-ranked class in the school's four-class hierarchy |
| Status | Active |
| First Appearance | Chapter 1 |
Class Standing
| Period | Class Points | Personal-Point Outcome | Notes |
|---|---|---|---|
| Initial allocation | 1,000 | — | All classes began with 1,000 class points. |
| May 1 | 70 | 7,000 points per student | Class D recorded the lowest result, far behind Class C's 670 points and Class A's 940. 4 |
Class points determine each class's personal-point distribution at a 1:100 ratio. The school ranks classes from A to D; Class D occupies the bottom position, while only Class A is guaranteed the institution's best higher-education and employment opportunities. 4
Known Students
| Student | Documented role or involvement |
|---|---|
| Ayanokoji Kiyotaka | A reserved student noted by Hoshinomiya Rinyu for his watchful behavior; he repeatedly assists with Class D's crises. 1 3 9 10 |
| Horikita Suzune | Participates in efforts to prevent Sudo's expulsion and later supports investigating the fight accusation. 7 10 |
| Kushida Kikyo | Seeks outside assistance for Sudo and helps investigate the incident involving Class C. 9 10 |
| Sudo Ken | Faces possible expulsion after failing an exam, then becomes the accused party in the Class C fight case. 7 9 |
| Hirata Yosuke | A socially supportive student who accompanies Hoshinomiya during the rainy season. 7 |
| Sakura Airi | Becomes a possible witness after Hoshinomiya notices her unusually panicked avoidance. 10 |
| Ike Kanji | Leaves the library study session with Sudo and Yamauchi after Sudo's dispute with Horikita. 5 |
| Yamauchi Haruki | Leaves the library study session with Sudo and Ike. 5 |
History
Initial Ranking
Class D's poor position becomes clear when the first monthly class-point results are announced. It receives only 70 class points and 7,000 personal points per student, prompting shock among the higher-ranked classes. Class A students, including Yahiko, repeatedly treat the result as confirmation that Class D is filled with inferior students. 4 5 8 9
Sudo's Expulsion Crisis
During the midterm period, rumors spread that Sudo failed a subject and faces expulsion. Horikita approaches Hoshinomiya Rinyu for aid, and he lends 200,000 points to prevent Sudo's removal. Sudo later thanks him directly, showing greater humility after the crisis. 7
Fight Investigation
A later fight between Sudo and three Class C students puts Class D under renewed pressure. The school tentatively concludes that Sudo initiated the conflict and bullied the others, while Sudo maintains that he was lured into it. The unresolved investigation causes the school to withhold personal points from the entire first-year grade. 8 9
With Class B unable to locate witnesses, Kushida and Ayanokoji ask Hoshinomiya to check whether anyone in Class A saw the incident. Every Class A student denies being present. Hoshinomiya instead identifies Sakura Airi's unusually frightened reaction as a possible lead and directs Kushida, Ayanokoji, and Horikita to speak with her. 9 10
Relationships
- Class A — Class D is widely disparaged by Class A students as a class of “defective products”; however, Hoshinomiya Rinyu lends points to Sudo and later investigates the fight case at Class D's request. 5 7 9 10
- Class B — Ichinose Honami and Class B are asked to search for witnesses to Sudo's fight, but none of their students passed through the relevant area. 9
- Class C — Class C students accuse Sudo of initiating a fight; Ryuen Kakeru uses the crisis to provoke Class D and challenge Class A's involvement. 9
- Hoshinomiya Rinyu — An outside benefactor and investigator who provides Sudo with a 200,000-point loan and follows the lead connected to Sakura. 7 10
Major Arcs
- Monthly Point Revelation — Class D's 70 class points expose the severity of its disadvantage within the school's hierarchy. 4
- Library Conflict — Sudo clashes with Horikita over academics, then is further provoked by Yahiko's insult toward Class D. 5
- Midterm Expulsion Crisis — Sudo is threatened with expulsion but receives financial help through Horikita's arrangement with Hoshinomiya. 7
- Sudo Fight Case — Class D seeks witnesses and outside cooperation after Sudo is accused of attacking Class C students; Sakura becomes a potential key to the truth. 8 9 10