Chabashira

Biodata

Feature	Details
Name	Chabashira Sae (茶柱)
Alias(es)	Little Sae
Gender	Female
Age	28 38
Affiliation	Advanced Nurturing High School; Class D
Occupation/Role	Class D homeroom teacher; former Advanced Nurturing student 58 59
First Appearance	Enrollment 2

Background / History

Chabashira grew up in a family that owned several tea gardens. Her grandfather taught her tea-roasting and brewing from childhood and intended for her to inherit the family business. Before Chabashira enrolled at Advanced Nurturing, however, her father took control of the gardens and later mortgaged them through poor management. 109

Thirteen years before the current story, Chabashira entered Advanced Nurturing as a Class D student. Through three years of effort, her class came within 73 class points of Class A. During its final special exam, she had an opportunity to secure 100 class points by expelling a student, but hesitated; the class failed to recover and ultimately missed promotion. The student had been someone with whom she had promised to attend Tokyo University after graduation. 58 59

Unable to move past that failure, Chabashira returned to the school as Class D's homeroom teacher, treating the class's promotion as a chance at redemption. Her desire to reach Class A becomes central to her decisions and leaves her vulnerable to Suzuki Tsubame's bargaining. 38 59

Appearance

Chabashira is a mature-looking woman whose appearance has been compared to what Horikita Suzune may look like as an adult. Her usual expression is notably cold and severe, though it softens on rare occasions when Class D succeeds or when she is alone with Suzuki. 6 37 141

• Frequently maintains an “ice-block” expression in class. 37
• Has a composed, practiced manner when preparing tea. 108
• Her assessed parameters are unusually high for a faculty member. 18

Assessed Parameters

Attribute	Rating
Appearance	9.7
Intellect	9.3
Combat	9.2

Ratings observed by Suzuki Tsubame. 18

Personality

Chabashira projects an aloof, strict, and often intimidating presence. She rarely interferes with Class D's behavior unless it becomes necessary, but she immediately recognizes exceptional potential in students such as Suzuki. After he deduces the school's concealed point system, she supports his decision not to reveal the rules to the entire class. 3 6

Her defining trait is her obsession with Class A. The loss of her own class thirteen years earlier has left her unable to accept failure, and she is willing to compromise her principles or make unequal arrangements to gain an advantage for Class D. 38 59

Away from the classroom, Chabashira is markedly more insecure. She struggles to communicate affection directly, fears Hoshinomiya's interest in Suzuki, and grows increasingly dependent on Suzuki's presence and approval. 77 78 88 141

Abilities & Skills

Intellectual and Physical Aptitude

Chabashira possesses high evaluated intellect and combat capability, suggesting that she is far more capable than her outwardly detached teaching style initially indicates. 18

• Intellect: 9.3 — Recognizes the significance of class rankings and hidden examination structures. 3
• Combat: 9.2 — Her evaluated combat rating is exceptionally high for a teacher. 18

Class Management

Chabashira can use her position to support Class D's strategic efforts, although she often relies on Suzuki to produce decisive results.

• Provides Suzuki with a private account after he delivers the top result in the grade. 37
• Announces a luxury cruise reward to motivate Class D before the final exam. 55
• Authorizes Horikita's withdrawal from the Uninhabited Island Exam when she becomes ill and arranges medical treatment. 75
• Privately offers exam hints when she fears Suzuki may not act in the class's interests. 89

Tea Preparation

Chabashira was trained by her grandfather in roasting and brewing tea, skills connected to her family's former tea-garden business. 109

• Prepares tea with practiced, confident movements. 108
• Learned tea roasting and brewing while still young. 109

Habits

• Smokes cigarettes, including in the faculty office and around students. 3 59
• Frequently drinks alcohol when distressed or alone. 58 77 108
• Has withdrawn socially; she admits that she had not gone shopping or spent time with friends for months. 110

Relationships

• Suzuki Tsubame — Her Class D student, strategic ally, and eventual intimate partner. She initially supports his plans because of his ability to advance the class, but their relationship becomes emotionally complicated as she grows attached to him. 3 59 78 89 118
• Hoshinomiya Chie — Fellow teacher, former classmate, and nominal friend. Hoshinomiya openly probes Chabashira's arrangement with Suzuki and seeks to obstruct her ambition to reach Class A. 77 78
• Horikita Suzune — Student in Class D. Horikita seeks Chabashira's guidance on the school's rules and later reacts negatively after learning of Chabashira's relationship with Suzuki. 19 118
• Class D — Her homeroom class and the focus of her long-running redemption effort. Their first-place academic result and later Uninhabited Island performance renew her hopes of reaching Class A. 37 77

Story Role / Major Arcs

Early Class D Strategy

Chabashira notices Suzuki's deduction that the monthly point allocation is not fixed and openly praises his observation and judgment. She accepts his proposal to withhold the special-exam rules from the class, seeing him as a possible path toward Class D's promotion. 3

Midterm Success

After Class D achieves a complete pass and surpasses Class A in the grade's results, Chabashira announces the school's additional 100 class-point award. The result raises Class D's monthly individual-point allocation to 10,000 points. 37

Information Deal with Suzuki

Desperate for intelligence on the other classes, Chabashira allows Suzuki to leverage her ambition. He informs her that Class A's leaders are divided, Class B depends excessively on Ichinose, and Class C is vulnerable because of evidence tied to a class brawl. 38

Cruise Trip and Past Confession

During the summer cruise, Chabashira summons Suzuki to the stern deck and reveals her own Class D past. She explains that her indecision during a final special exam cost her class its chance to reach Class A, establishing why she returned as a Class D teacher. 58 59

Uninhabited Island Exam

Chabashira's arrangement with Suzuki pays off during the Uninhabited Island Exam. Class D rises from 72 to 697 class points, overtaking the former Class B and effectively jumping from Class D to Class B. 77

Beneficiary Exam Conflict

Chabashira secretly gives Suzuki a hint about the Beneficiary Exam's naming pattern out of concern for Class D. Suzuki rejects the intervention, arguing that she underestimates him and values class interests over understanding his own feelings. 89

Tea-Garden History and Isolation

At her home, Chabashira explains the collapse of her family's tea-garden business and acknowledges her anxiety over Suzuki's displeasure. Suzuki later challenges her prolonged isolation and invites her to spend time outside school. 109 110

Sports Festival Period

As the sports festival approaches, Chabashira attempts to redirect discussions with Suzuki toward practical planning. Despite her detached demeanor, she remains visibly troubled by her feelings and accepts his invitation to a date. 140 141

Notable Quotes

“Actually... I was once a student at Advanced Nurturing too. Like you, I was initially assigned to Class D.” 58

“Thirteen years ago, we were full of ambition... After three years of everyone's hard work, in the end... we were only one step away from Class A.” 59

“Everything he does is for Class D. That's all.” 78