Sakayanagi

Biodata

Feature	Value
Name	Sakayanagi Arisu (坂柳有栖) 2
Alias(es)	“Cane Girl” 2
Gender	Female
Affiliation	First-Year Class A; leader of the Sakayanagi Faction 20 47
Occupation/Role	Class A strategist and faction leader 15 20
First Appearance	Chapter 1 1

Background / History

Sakayanagi entered Ikusei High School as a First-Year Class A student. On the day of the entrance ceremony, she had already concluded that the school’s free tuition, living allowance, and exceptional advancement rate concealed an unusual system; she warned Shirogane Miyuki that “the things that are free are often the most expensive.” 2

Despite her poor health, Sakayanagi quickly secured supporters in Class A by sharing her observations of the school. Within two days of enrollment, she had gathered enough followers to direct intelligence-gathering efforts, and Student Council President Horikita Manabu identified her as third place in the entrance examination, with superior academic ability and intelligence. 10 15

She spent her entire initial 100,000 private points to obtain the first-year student roster, then used points and outside contacts to acquire further intelligence about the school. Her supporters contributed points voluntarily; Sakayanagi later stated that 22 students supported her and received club subsidies to continue funding the faction. 16 17 27

Class A ultimately divided between Sakayanagi’s aggressive faction and Katsuragi Kohei’s conservative faction. Sakayanagi views Katsuragi’s strategy of preserving Class A’s existing lead as short-sighted, believing the lower-ranked classes are more dangerous than he realizes. 20 27 33

Appearance

Sakayanagi is a petite, slender girl with a visibly frail constitution. Her appearance contrasts sharply with the confident, aristocratic presence she projects. 2 10

• Silver hair with a glossy, high-quality luster 10
• Translucent, fair skin and a sickly pallor 10 27
• Uses a cane, held in her left hand, because of a congenital heart condition 10
• Often described as cute or adorable despite her imposing demeanor 18 37
• Wore a black beret during the Student Council announcement 47

Personality

Sakayanagi is highly intelligent, observant, and proactive. She identifies opportunities early, understands the school’s competitive structure, and treats information as a resource to be acquired and used. She has little patience for conservative strategies or for people she considers unexceptional. 15 27 38

Her polite speech and pleasant smile frequently conceal a manipulative, confrontational nature. She openly treats capable classmates as assets, enjoys resistance more than obedience, and uses secrets to force cooperation when persuasion or payment fail. 14 21 22

Although she leads a major Class A faction, Sakayanagi does not appear invested in preserving Class A’s supremacy for its own sake. She is willing to let lower-ranked classes develop if doing so produces stronger opponents, particularly the “genius” she seeks in Class D. 29 38

She places great importance on fairness and reacts negatively to implications that she receives special treatment or possesses more initial points than other students. 27

Abilities & Skills

Intelligence and Academic Ability

Sakayanagi possesses exceptional academic ability and analytical skill, placing third in the entrance examination and grasping the school’s hidden structure almost immediately. 15

• Recognized that the school’s benefits concealed an unusual mechanism on her first day. 2
• Obtained and analyzed the first-year roster to map potential allies and rivals. 15 16
• Identified Kamuro Masumi from Shirogane’s limited description of the electronics-store incident. 18
• Saw through Shirogane’s attempts to compile Class A intelligence manually. 26
• Memorizes academic material after a single reading. 33

Manipulation and Blackmail

Sakayanagi exploits information, money, and psychological pressure to obtain cooperation.

• Initially offered Kamuro 100,000 private points per month to become her assistant. 21
• Tracked Kamuro’s movements, deduced her kleptomania, and threatened to expose her thefts. 21 22
• Arranged for store inventory to be checked daily, ensuring Kamuro’s thefts could be verified. 22
• Forced Kamuro into unpaid service for the remainder of their three years at school. 21
• Uses faction members to observe and tail other students, including Shirogane. 29

Faction Leadership

Sakayanagi established a substantial support base in Class A shortly after enrollment, with followers carrying out tasks and contributing private points. 10 27

• Her supporters voluntarily act as her “right and left hands” in exchange for her insight into the school. 14
• Maintains a distinct faction opposing Katsuragi’s conservative bloc. 20 47
• Publicly yielded command of two special exams to Katsuragi, framing the decision as a test of his “steadiness” and ability. 47
• Her leadership remains limited by Class A’s factional division. 20 26

Strategic Ambition

Sakayanagi seeks to challenge powerful opponents rather than merely preserve Class A’s position.

• Learned that 20 million private points can prevent expulsion or enable a class transfer. 38
• Asked Shirogane to help suppress Class D and defeat Ayanokoji Kiyotaka, offering 20 million points upon completion. 38 39 46
• Considers Kamuro a useful assistant but rejects her as unsuitable for confronting a genius. 38
• Treats Horikita Suzune as a future rival and dangerous individual. 28

Limitations

• Has a congenital heart condition and requires a cane for mobility. 10
• Cannot participate in physical-education activities and needs assistance with some daily tasks. 19
• Relies on subordinates, particularly Kamuro, for errands and physical support. 30 33
• Does not fully control Class A because of Katsuragi’s rival faction. 20 26

Equipment / Items

• Cane — Used for mobility; typically carried in her left hand. 10
• First-year student roster — Purchased from the Student Council for 100,000 private points. 16
• Black beret — Worn at the Student Council member announcement. 47

Relationships

• Shirogane Miyuki — A cross-class associate and strategic interest. Sakayanagi shares intelligence with him, had him tailed after he piqued her interest, and recruits him to help defeat Class D’s hidden genius. 15 29 38 39
• Kamuro Masumi — Her coerced assistant. Sakayanagi uses Kamuro’s kleptomania as leverage, assigning her errands and intelligence work without compensation. 21 22 30
• Katsuragi Kohei — Rival leader of Class A’s conservative faction. Their conflict centers on Sakayanagi’s aggressive approach versus Katsuragi’s preference for stability. 20 33 47
• Hashimoto Masayoshi — A loyal Sakayanagi Faction supporter who defends her against Katsuragi and conducts surveillance for her. 20 29
• Horikita Suzune — A student Sakayanagi considers a future rival and a dangerous presence. 28
• Ayanokoji Kiyotaka — The “genius” Sakayanagi intends to defeat through her arrangement with Shirogane. 38 46
• Nagumo Miyabi — Student Council Vice President who attempts to influence Class A; Sakayanagi dismisses him when he occupies her seat. 18
• Horikita Manabu — Student Council President who recognizes her exceptional intellect, entrance-exam placement, and early support base. 15

Story Role / Major Arcs

Early Class A Consolidation

Sakayanagi identifies the school’s hidden competitive system, gains Class A supporters, and establishes herself as a major obstacle to the other first-year classes. 2 10 15

Student Roster and School Intelligence

She sacrifices 100,000 private points to acquire the first-year roster and uses points to pursue further school intelligence, giving Class A an early informational advantage. 16 17

Kamuro’s Enslavement

Seeking an assistant due to her physical condition, Sakayanagi first offers Kamuro payment, then uses evidence of her theft and kleptomania to force her into service. 19 21 22

Class A Faction Conflict

Sakayanagi’s methods create a competing leadership structure in Class A. She repeatedly clashes with Katsuragi over whether the class should aggressively seek greater power or preserve its existing advantage. 20 33 47

Pursuit of Class D’s “Genius”

After learning the value of 20 million private points, Sakayanagi recruits Shirogane to suppress Class D and defeat Ayanokoji. 38 39 46

Shirogane’s Public Vice President Declaration

Shirogane publicly announces that he will invite Sakayanagi to become his Student Council Vice President should he become president. The declaration causes suspicion within Class A and further strains its factions. 49

Trivia

• Sakayanagi’s supporters initially accompanied her in groups, carrying shopping bags and clearing her path, but she was later more often seen only with Kamuro. 10 26
• She requires roughly ten hours of sleep each night, according to Kamuro. 39
• Sakayanagi considers a person’s resistance more appealing than simple obedience. 21