Chabashira Sae

Biodata

Feature	Information
Name	Chabashira Sae (茶柱佐枝)
Gender	Female
Affiliation	Advanced Nurturing High School; Class 1-D
Occupation/Role	Class 1-D homeroom teacher; Japanese History teacher
First Appearance	Chapter 2

Background / History

Chabashira is assigned as Class 1-D's homeroom teacher for the students' full three years at Advanced Nurturing High School. She also teaches Japanese History. On the first day, she introduces the student-point system, explains that points are used for campus facilities and purchases, and tells students to spend their initial 100,000 points freely because they will be reclaimed after graduation. 2

She notices Watanabe Hayabara's suspicion that the monthly point distribution is tied to an undisclosed evaluation. Her reaction indicates that she had hoped at least one Class D student would identify the issue. 2 3

Chabashira previously attended the school in the same class as Hoshinomiya Chie. An unnamed museum teacher holds a personal grudge against her and suggests that their shared school history was consequential. 5

Appearance

Chabashira is a woman with a professional, severe presentation, typically wearing a black suit jacket over a white shirt.

• Hair worn in a ponytail. 2
• Often wears black stockings and high-heeled shoes. 2 27
• Wears a silver rose brooch on her shirt collar during the midterm period. 27
• Her expression is frequently described as stern, cold, or unreadable. 13 28 36

Personality

Chabashira is blunt, demanding, and largely unsympathetic toward Class D's failures. She treats their loss of monthly points as the predictable consequence of their own tardiness, absences, private conversations, and spending habits rather than a problem the school should solve. 13

She refuses to disclose the school's detailed personnel-evaluation criteria, comparing the system to an employer's internal performance reviews. Despite her harsh delivery, she continues to observe Class D's potential and eventually expresses interest in seeing whether Horikita Suzune can prove that “defective products” can improve. 13 30

Abilities & Skills

Classroom Administration

Chabashira manages Class 1-D's homeroom affairs, distributes information about the school's point system, announces examinations and results, and handles withdrawal procedures. 2 13 28

• Explains the relationship between class points, monthly private-point deposits, and class rankings. 13 14
• Enforces the school's consequences for failing examinations. 28
• Announces and documents disputes affecting the class's points and standing. 36

Student Evaluation

She has access to information concerning student placement, ability evaluations, attendance-related deductions, and examination outcomes. 13 14 28

• Identifies Class D as the school's lowest-ranked class and describes its students as those judged least capable. 14
• Questions Watanabe over his missing entrance-exam papers and question-mark ability rating. 14
• Privately judges Watanabe as both dangerous and potentially capable of leading Class D to Class A. 30

Story Role / Major Arcs

Initial Point-System Reveal

Chabashira gives Class 1-D its initial 100,000 private points and encourages unrestricted spending, while withholding the conditions that govern later distributions. 2

At the beginning of May, she reveals that the class earned zero monthly points due to ninety-eight instances of tardiness or absence and 391 instances of private conversation or phone use. She also displays the first-month class totals: Class A at 940 points, Class B at 650, Class C at 490, and Class D at 0. 13

Class D Placement and Midterm Expulsions

She explains that the school places students according to overall merit, with Class D serving as the lowest-ranked group. She further confirms that class rankings can change when class-point totals overtake another class's total. 14

After the midterm, Chabashira announces the failures of Haruki Yamauchi, Sudo Ken, and Ijuin Wataru, stating that failed students are expelled. When Watanabe pays 100,000 private points, she cancels Ijuin's expulsion. 28 30

She later explains that Class D's two departures caused a technical settlement that left the class with 13 class points rather than zero. 35

Miyake Dispute

Chabashira delays the first-years' point distribution after Class C accuses Akito Miyake of seriously injuring three students. She presents both the accusation and Miyake's self-defense claim without deciding the matter herself, postponing the verdict until the Student Council hearing. 36

She attends the hearing with Class D's representatives and shows approval after Miyake is ultimately declared innocent. 46 49

Relationships

• Class 1-D — Homeroom teacher who oversees the class's points, evaluations, examinations, and disciplinary consequences; she initially regards the students with open contempt. 2 13 14
• Watanabe Hayabara — Recognizes his intelligence when he questions the point system, later investigates his irregular admission records, and considers him capable yet dangerous. 2 14 30
• Horikita Suzune — Rejects Horikita's claim that her Class D placement was a mistake, but later becomes interested in Horikita's belief that students can change. 14 30
• Ayanokoji Kiyotaka — Calls him to her office alongside Watanabe to question his entrance-exam results; later suggests that Ayanokoji and Horikita may enable Class D to rise. 14 30
• Hoshinomiya Chie — Former classmate from their own time as students at the school. 3 5
• Akito Miyake — Presents the Class C assault complaint against him and oversees Class D's response while the case remains unresolved. 36

Notable Quotes

“You students are truly foolish!” 13

“Class D is a place for the stragglers—their final stronghold. In short, you are all the most defective products in this school.” 14