Sachiko Juraku Personality: A Sadistic and Calculating Gambler

Updated: Monday, December 22, 2025

MBTI

ESTP

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8w7

Alignment

Chaotic Evil

Sachiko Juraku is the former Public Morals Committee Chairwoman of the Student Council at Hyakkaou Private Academy, a prestigious school where students gamble with their fortunes and social status. She became obsessed with the outstanding gambling skills of the first-year student, Mary Saotome, and tried to make her her personal housepet.

Sachiko Juraku's Personality

Sachiko is a sadistic, psychopathic, and manipulative person who enjoys hurting people both physically and mentally. She is ruthless, arrogant, and ambitious, aiming to dominate the school and crush anyone who opposes her. She has no empathy or remorse for her victims, and takes pleasure in breaking their will and identity.

Sachiko’s origins are unknown, but it is implied that she came from a wealthy and influential family that gave her a high social status and power. She was also gifted with a high perception of opponents’ movements, ingenuity, and ability to cheat in gambling, which made her a formidable player. She developed a twisted sense of entertainment from gambling, seeing it as a way to assert her superiority and control over others.

Sachiko became a Student Council member thanks to her impressive gambling skills and reputation. She was chosen by the President of the Student Council to be the head of the Public Morals Committee, a position that gave her the authority to enforce the rules and punish the rule-breakers. She used her power to create a system of housepets, students who became indebted to her and had to obey her every command. She kept one of them, Mikura Sado, on a leash as a sign of her dominance and cruelty.

Sachiko’s life changed when she met Mary Saotome, a first-year student who showed exceptional talent and potential in gambling. Sachiko was intrigued by Mary’s courage, intelligence, and defiance, and decided to make her her second housepet. She challenged Mary to various gambles, hoping to see her break down and submit to her. However, Mary proved to be a worthy opponent, who resisted Sachiko’s attempts to manipulate and humiliate her. Sachiko became obsessed with Mary, seeing her as the ultimate challenge and prize.

Sachiko’s personality was also influenced by her rivalry with the other Student Council members, especially Kirari Momobami, the President. Sachiko resented Kirari for being more powerful and popular than her, and secretly plotted to overthrow her. She also clashed with the other members, who had their own agendas and ambitions. Sachiko was wary of their schemes and tried to maintain her position and influence. She also faced opposition from other students, who disliked her tyranny and cruelty.

Relationships

Mikura Sado: Sachiko’s personal housepet, who she treats as a slave and a toy. Sachiko has no respect or affection for Mikura, and often abuses her physically and verbally. Mikura is terrified of Sachiko, and obeys her out of fear and despair. Sachiko uses Mikura as a tool to intimidate and torment her opponents, and as a source of amusement for herself.
Mary Saotome: Sachiko’s main target and obsession, who she wants to make her second housepet. Sachiko is fascinated by Mary’s gambling skills and personality, and tries to break her spirit and make her her puppet. Mary, however, refuses to give in to Sachiko, and fights back with her own wit and determination. Sachiko and Mary have a complex and intense relationship, marked by hatred, admiration, and attraction.
Kirari Momobami: Sachiko’s superior and rival, who she despises and envies. Sachiko considers Kirari to be her greatest obstacle and threat, and plans to overthrow her and take her place as the Student Council President. Kirari, on the other hand, is indifferent to Sachiko, and sees her as a minor annoyance. Kirari is aware of Sachiko’s schemes, and often foils them with her own cunning and charisma.
Other Student Council members: Sachiko’s colleagues and competitors, who she distrusts and dislikes. Sachiko views the other members as rivals for power and influence, and tries to outsmart and undermine them. The other members also have their own motives and goals, and often clash with Sachiko. Sachiko has a particularly hostile relationship with Ririka Momobami, Kirari’s twin sister and Vice President, who she considers to be a traitor and a nuisance.

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