Chabashira Sae

Biodata

Feature	Information
Name	Chabashira Sae (茶柱佐枝)
Alias(es)	Sae-chan; Little Sae
Gender	Female
Affiliation	Advanced Nurturing High School; Class 1-D
Occupation/Role	Class 1-D homeroom teacher; history instructor
First Appearance	Chapter 2

Background

Chabashira is Class 1-D's homeroom teacher and tells the incoming students that she will be responsible for them until graduation, barring unforeseen circumstances. Her first introduction establishes her cold, authoritative manner: she silences the classroom with a sharp gaze and speaks without the expected warmth of a new homeroom teacher. 2

She previously belonged to a Class 1-D herself. Her class failed to advance to Class 1-A because of her own actions, leaving her deeply invested in seeing the current Class 1-D succeed while remaining unwilling to openly carry them there herself. 59

Appearance

Chabashira presents herself with a severe, professional appearance that reinforces her authority.

• Dark business suit with a white shirt worn slightly open at the collar. 2 20
• Brown hair tied in a high ponytail with a purple hair tie. 20
• Silver hairpin at her temple. 20
• Dark suit skirt, purple-toned semi-sheer stockings, and black stilettos. 20
• Often carries an unlit pack of ladies' cigarettes. 42 60

Personality

Chabashira is cold, blunt, and highly controlled in the classroom. She openly regards Class 1-D as a collection of “defective products,” refusing to soften the consequences of their failures or reassure them when they panic. 6 27 31

Her disciplinary approach is deliberately indirect. She initially allows lateness, sleeping, phone use, private conversations, and early departures to continue without interruption, silently recording each violation before revealing their accumulated effect on the class's points. 6 31 She considers self-control and awareness to be the students' responsibility rather than something she should provide for them.

Despite this severity, Chabashira is attentive to capable students and responsive to practical initiative. She monitors Tatsuya Sakuya closely during his psychological assessment, recognizes the value of his past-exam materials, and privately warns him that a single advantage will not be enough to elevate Class 1-D. 21 40 42

Her wish for Class 1-D to reach Class 1-A conflicts with her refusal to offer direct help. When the midterm scope changes, she withholds the information for days and dismisses it as having “accidentally” slipped her mind, forcing the class to discover and adapt to the problem themselves. 59

Abilities & Skills

Classroom Discipline and Evaluation

Chabashira maintains detailed control over Class 1-D's conduct, even when she appears to ignore misconduct in the moment.

• Records attendance and behavioral violations without publicly reacting during lessons. 6
• Reveals that Class 1-D accumulated 91 tardiness or absence incidents and 391 other violations in a single month. 31
• Uses the school's Class Point system to demonstrate the direct financial consequences of classroom behavior. 31
• Conducts a mandatory fifty-question psychological assessment to evaluate students' values and social adaptability. 20 21

Academic Administration

As Class 1-D's history instructor and homeroom teacher, Chabashira controls examinations, schedules, and academic consequences.

• Imposes additional instruction before class because Class 1-D has fallen behind the required teaching schedule. 26
• Administers an unexpectedly difficult advanced-mathematics mock examination and warns that the official midterm will be harsher. 27
• Establishes that the midterm passing threshold is half of the class average and warns that failures will lead to expulsion. 31
• Supervises Class 1-D's official midterms and explains the examination rules. 61

Knowledge of School Rules

Chabashira understands the school's transactional rules and enforces their limits without granting free exceptions.

• States that altering one midterm point costs 100,000 Private Points. 64
• Accepts 200,000 Private Points for Sudo Ken to receive an individual make-up examination rather than directly altering his score. 64 65
• Sets the make-up exam's conditions: the same English scope, a seven-day deadline, a passing score of 43, and no refund if Sudo fails. 65

Relationships

• Class 1-D — Homeroom teacher who subjects the class to strict consequences while retaining the ambition of seeing it reach Class 1-A. 31 42 59
• Tatsuya Sakuya — A student she watches with particular interest due to his controlled entrance-exam scores, swimming performance, and ability to acquire past exam papers. She recognizes his rise as Class 1-D's secretary but cautions him against overconfidence. 21 40 42
• Horikita Suzune — Evaluates Suzune's Class 1-D placement bluntly and later entrusts her with the revised midterm scope when the class confronts her. 21 59
• Hoshinomiya Chie — Class 1-B's homeroom teacher and Chabashira's teasing colleague. Hoshinomiya calls her “Sae-chan” and frequently undermines her stern atmosphere with flippant remarks. 21 59 60
• Sudo Ken — Oversees the terms of his purchased make-up exam, making clear that the opportunity does not erase his risk of expulsion. 64 65

Story Role / Major Arcs

Class Point Collapse

Chabashira permits Class 1-D's early complacency to continue, then reveals that their misconduct has reduced their monthly Class Points to zero. She publicly presents their violation totals and mock-exam scores, warning that several students face expulsion if they fail the midterms. 6 31

Class Representative Election

She oversees the election for Class 1-D's representative secretary after Hirata Yousuke proposes it. Chabashira is inwardly impressed when Tatsuya presents complete past midterm papers, recognizing that the class still has capable students. 40

After Tatsuya wins, she observes his handling of Kouenji Rokusuke's and Ayanokouji Kiyotaka's public refusals to join the Core Class Committee. 41

Midterm Preparation

Chabashira privately acknowledges that Tatsuya used the real exam questions to seize control of the class, but warns that passing the midterms alone will not restore Class 1-D's Class Points. 42

She later withholds the expanded midterm scope until the students discover it independently. When confronted, she claims she forgot to tell them and gives the revised scope to Horikita. 59

Midterms and Sudo's Make-Up Exam

Before the midterms, Chabashira offers the class a summer island trip if every student passes both the midterms and finals. 61

Following Sudo's failing result, she initially sets the cost of altering his four missing points at 400,000 Private Points. She instead accepts a 200,000-point deal for one make-up examination, with Sudo required to reach the 43-point passing line on his own. 64 65

Notable Quotes

“If you think it's unfair, feel free to file a complaint with the school. However, before that complaint takes effect, my words are orders, and my rules are the rules.” 26

“This is an elite school established by Sakura Nation, and trash and defective products unable to create value for society have no qualification to remain on this campus.” 27

Trivia

• Chabashira shares a birthday with Tatsuya Sakuya; Hoshinomiya arranges an impromptu joint celebration for them at a KTV venue. 60
• Although she carries ladies' cigarettes, she is shown putting them away or holding them unlit when mindful of school rules. 42 60