Busou Shojou Machiavellianism

Interesting facts:

Rin Onigawara: Uses a Shinken (a real, sharp katana). It is a traditional Japanese blade made for clean and precise cuts.

Mary Kikakujou: Uses a Western Fencing Foil with a modified tip. She focuses purely on extremely fast thrusts to pierce or disarm her opponent.

Warabi Hanasaka: Wields a short-bladed katana adapted for the Taisha-ryū style. This facilitates his acrobatic movements and aerial spins.

Satori Tamaba: Uses a Shikomizue (a sword hidden inside a cane or disguised sheath). It is the perfect weapon for his style focused on trickery and surprise attacks.

Tsukuyo Inaba: Carries a Nodachi (a Japanese sword much longer than the traditional katana). It requires tremendous strength to wield, maximizing the impact of its quick draw.

Tsukuyo Inaba: Due to her blindness and profound discomfort with noise and commotion, Tsukuyo lives in near-complete isolation. She spends most of her days meditating or practicing her quick draw in the Watchtower or in an isolated Dojo at the back of the academy, an extremely quiet place where she can map her surroundings purely by the sound of the wind.

The High Council and the Forces of Shadow
Amō Kirukiru: Completely rejecting the company of the Five Swords and the school rules, Amō spends her time in isolated places forbidden to ordinary students. She usually stays on the Rooftop of the Main Building, looking down at the campus with disdain, or hidden in the Abandoned Storage Sheds on the school's outskirts, where no one dares to disturb her.

Yukino Fujibayashi (Principal): The principal is rarely seen walking around the school. She remains almost 100% of the time locked in the Principal's Office, a luxurious and highly technological office filled with monitors that transmit images from security cameras covering every inch of the academy.

Koharu Narukami: As the hidden ruler and a mystical figure within the institution, Koharu resides in the most restricted area of ​​the entire complex: the Directorate's Inner Mansions, a heavily guarded elite residential area located behind the main building, where she lives under Yukino's complete care and protection.

The Five Supreme Swords and Their Factions: Rin Onigawara: As the first line of defense and the most active leader in daily discipline, Rin spends almost all her time patrolling the Main Halls and the Central Courtyard of the school. She is also frequently found in the Main Fencing Dojo, where she maintains her rigorous training and cleans her katana. Mary Kikakujou: As she values ​​elegance and Western customs, Mary usually stays in the Female Wing's Deficit Room or in more reserved rest rooms of the school. She also spends a good part of her time in the Western Fencing Training Area, an adapted space where she can practice her foil thrusts away from the dust of traditional martial arts. Warabi Hanasaka: Warabi has transformed the school's Recreation Courtyard and Gardens into her personal headquarters. She is often seen outdoors, surrounded by her subordinates and accompanied by her pet bear, Kyōbō. She also uses the Sports Gymnasium when she decides to organize her big competitions and gambling games. Kinue Tanukihara: As Warabi's loyal henchwoman, Kinue is always exactly where her leader is. She can be seen doing perimeter security at the Recreation Courtyard or standing guard at the entrance to areas controlled by Warabi's faction. Satori Tamaba and Misogi Tamaba: As Satori loves to spy on and manipulate people, she doesn't have a fixed training location, preferring to wander unpredictably throughout the campus. However, the most notable place where she and her twin sister Misogi usually operate is the school's Public Baths and Changing Rooms area, an enclosed and steamy place that Satori uses to corner her victims and play mind games.

The Protagonist and their Inner Circle:

Fudō Nomura: Because he spends most of his time being hunted or trying to obtain the stamps, Nomura is rarely still. When he's not battling in the courtyards or hallways, he's usually found in the Boys' Dormitories (where he tries to relax), in Classroom 2-C, or hiding in open areas of the campus to avoid the eyes of the student militia.

Choquer Marutsubachi: As Nomura's main guide and friend, he often frequents the same classroom as the protagonist or the hallways of the main building. He also spends a considerable amount of time in the boys' common areas, where the boys who have already undergone the "Correction" gather to talk away from danger.

Kinue Tanukihara, 15, is Warabi Hanasaka's most loyal and fierce subordinate, acting as her leader's right-hand woman. She grew up admiring Warabi's strength and charisma, leading her to join her faction and train exhaustively to be her primary defender against any threat at school. Her personality is that of an extremely loud, short-tempered, aggressive, and loyal girl to the bitter end, always ready to jump down the throat of any boy who disrespects her mistress. Physically, Kinue has short, spiky black hair, a short stature, and a very distinctive feature: she is always chewing and popping gum, and carries two modified toy submachine guns that fire painful projectiles to immobilize her targets before sword fights.

The school's true living lie, 16-year-old Misogi Tamaba, is the identical twin sister of Satori Tamaba and the root of all her family's psychological trauma. Since childhood, she has been obsessively competing with Satori, manipulating their parents and teachers so that her sister always takes the blame for her own mistakes and misdeeds. She shares the same Keishi-ryū police fencing style as her sister, but her personality is even more sadistic, cold, purely psychopathic, and manipulative, taking genuine pleasure in destroying the emotional bonds and sanity of those around her. Visually, Misogi is identical to Satori, with the same purple hair and eyes, allowing the two to frequently switch places to deceive everyone at school. Her entry into the story serves to test the limits of Nomura's loyalty, who must distinguish between the two sisters amidst a deadly game of betrayal.

Nomura's first friend at his new school, 15-year-old Choquer Marutsubachi, represents the cruel reality of the boys who have undergone the "Correction" process. In the past, he was an ordinary student, but after being defeated by the student militia, he was forced to adopt the lifestyle imposed on the school's victims. He possesses an energetic, gossipy, cowardly, and slightly masochistic personality; he serves as Nomura's main informational guide, explaining how the school rules work, while simultaneously becoming desperately frightened every time the protagonist decides to pick a fight with one of the leaders. In appearance, Choquer is forced to wear the modified female uniform, flashy makeup, and a short black wig with bangs, which creates a bizarre and comical contrast with his masculine voice and mannerisms when he's away from the girls' eyes.

Nicknamed the "Ruling Goddess," Koharu Narukami, approximately 14 or 15 years old, is the true mastermind behind the entire hierarchy of Aichi Symbiosis Academy. As the younger sister of Headmistress Yukino Fujibayashi, she was raised in complete physical and martial isolation, developing absurd combat skills that blend the Imperial Sword style with reflexes surpassing any of the Five Swords combined. Her personality is childish, extremely capricious, selfish, and devoid of common sense, acting like a spoiled child who sees the entire school as her own personal playground and people as her disposable toys. Physically, she has a very short and frail stature, very light blonde hair tied in two long pigtails, and intense violet eyes. When she decides to emerge from the shadows at the end of the manga, her boredom and her search for a real challenge transform her into the greatest threat the academy has ever seen, forcing all the students to unite against her.

4. The Climax and the Resolution (End of the Manga)
   The Empress's Revolt: Amō Kirukiru decides to openly claim Nomura, sparking an internal war at the school. Nomura uses the Magic Bullet at full power to defeat her, concluding the main arc that was adapted into the anime.

The Koharu Narukami Arc: After Amō's downfall, the true hidden ruler, Koharu Narukami, decides to intervene. Nomura and the Five Supreme Swords must join forces to confront Koharu's divine power and decide the future of the academy.

The End of the School Year (Nomura's Decision): With all five stamps collected, Nomura finally earns the right to leave school. In the manga's conclusion, Rin Onigawara definitively sets aside her Oni mask to confess her feelings. Nomura makes his final decision about accepting his freedom or remaining with the girls at the academy.

2. The Founding of the New Order (School Background): The Girls' Revolt: Aichi Symbiosis Academy ceases to be an exclusively female school and begins accepting boys. Due to harassment and fights among the new students, the girls are authorized to carry real swords.

Rise of the Five Swords: The best female swordswomen form the Five Supreme Swords and institute the "Correction" system, forcing men to cross-dress to neutralize aggression.

The Arrival of Amō: Amō Kirukiru is transferred shortly before Nomura. On her first day, she single-handedly defeats the Five Supreme Swords, refusing to follow the rules, but decides to act in the shadows without interfering in their governance.

3. The Current School Year (The Main Timeline) First Day (Nomura's Arrival): Nomura transfers to the school. He refuses to cross-dress and faces Rin Onigawara. The fight ends with a knockout by Magic Bullet and an accidental kiss that breaks part of Rin's mask.

The Following Days (Mary's Fall): Nomura is hunted through the girls' dormitory. He confronts Mary Kikakujou, disarming her high-speed rapier thrusts and earning her respect (and school pass stamp).

Weeks Later (The Warabi Olympics): Warabi Hanasaka organizes a school tournament to hunt down Nomura. Nomura sabotages her troops and defeats Warabi and her pet bear in direct combat, turning her into an ally.

The Psychological Confrontation (The Sadistic Satori): Satori Tamaba blackmails Nomura's friends. In a brutal duel in the school baths, Nomura deciphers Satori's deceptive moves and defeats her, causing her to develop a romantic obsession with him.

The Awakening of the Strongest Sword: The director sends the lethal Tsukuyo Inaba to contain Nomura. In combat, Nomura manages to survive a sword strike at the speed of sound, earning the martial admiration of the young blind girl.

The chronology of Busou Shoujo Machiavellianism is divided between the characters' traumatic past and the main timeline, which takes place over the course of a single school year.
The chronological order of events within the work's universe is organized into the following periods:

1. The Hidden Past (Years Before the Main Story) Rin's Trauma: As a child, after her father betrayed and abandoned her mother, Rin Onigawara's mother took out her frustrations on her daughter. She forced Rin to wear the Oni mask, claiming that her face was ugly, which began the girl's emotional isolation.

Tsukuyo's Blindness and Training: Tsukuyo Inaba was born with congenital visual impairment and spent his entire childhood isolated, focusing his senses on perfect hearing and training in the Yakumaru Jigen-ryū martial style.

The Betrayal of Satori: Satori Tamaba grows up in the shadow of her twin sister (Misogi) in an environment of psychological abuse, which distorts her personality and causes her to create a sadistic and deceitful facade to protect herself.

The Incident at the Old School: Years later, at their old school, Fudō Nomura and Amō Kirukiru become involved in a massive and violent brawl. Amō displays a morbid obsession with Nomura. The conflict results in Nomura's expulsion and both of them being forced to transfer to Aichi Symbiosis Academy.

To fully grasp the essence of Busou Shoujo Machiavellianism, the most important point is to understand that the entire work functions as a grand satire and metaphor about the clash between the pursuit of individual freedom and the impositions of the system.
If you focus on these three mental pillars, you will perfectly understand the logic of the story:

The central conflict isn't about hate, it's about autonomy: The protagonist, Nomura, doesn't want to destroy the school, become a hero, or get revenge on the girls. His goal is extremely simple and selfish: he wants the right to come and go without anyone dictating how he should dress or act. The driving force of the story is his resistance against a system that demands total submission in exchange for "peace."

The Antagonists are Victims of Their Own System: The Five Supreme Swords seem like tyrannical villains at first, but as the story progresses, you realize that their aggression stems from fear and past traumas. They use the swords, the rigid rules, and the masks as emotional shields because the world (and the school's own administration) has taught them that if they don't dominate, they will be dominated and hurt.

Combat is a Form of Communication: Instead of using weapons to subdue the girls, Nomura fights with his bare hands and uses close-quarters techniques (such as the Magic Bullet). Each fight is not meant to humiliate his opponents, but rather to "break their armor." By physically disarming them, he breaks their martial pride and forces them to see him not as a masculine threat, but as an individual who respects them, which causes them to develop feelings for him.

In short, what matters is not just the action or the sword fights, but how the protagonist manages to dismantle an authoritarian regime and liberate the very oppressors using only his determination to remain free.

The principal of Aichi Symbiosis Private Academy is Yukino Fujibayashi. She plays a far more strategic and shadowy role behind the scenes than a typical school administrator, acting on motivations that blend institutional convenience with social rehabilitation experiments.
Yukino is a woman of cold demeanor, silent and of very few words. Her appearance is marked by her purple hair and eyes, and she frequently wears an elegant black tailored suit with white gloves, giving her a severe and androgynous look, similar to that of a butler. She also acts as the personal bodyguard of Koharu Narukami, the young and mysterious hidden ruler who is above the Five Swords. Instead of managing the school with bureaucratic trivialities, Yukino observes everything through monitors and security cameras, intervening only to move the pieces on the school's martial chessboard.

In this way, the adults at the academy function merely as the bureaucratic cog that keeps the school running and isolated from the outside world, while the real power of policing and judgment remains in the hands of the armed teenage girls.

During escape attempts or any other violent conflict at Aichi Symbiosis Academy, the role of teachers, guards, and adult staff is one of complete passivity, omission, and acquiescence. Instead of acting as traditional authority figures who contain the violence or protect the students, the adults operate as mere spectators of the system and guarantors of the school's isolation. This unusual stance is due to the fact that the school's administration itself has abdicated its disciplinary power, delegating it entirely to the Five Supreme Swords. The teachers are aware that the male wing was uncontrollable before the girls' armed intervention and, out of fear or pure administrative convenience, prefer not to interfere. In practical terms, if a student is being hunted or beaten by the swordswomen in the courtyard, the teachers simply close the classroom windows, look away, and continue their activities as if nothing were happening. As for the adult security guards and gatekeepers, their function is not to police the interior of the campus, but rather to ensure external perimeter security. They act as wardens of a private prison: they monitor the security cameras, control the electronic locks on the main gates, and prevent unauthorized entry from the outside. If a runaway student tries to force their way out through the main gates, the adult guards will not help them escape; instead, they block their passage and immediately notify the student militia so that the Five Swords can come and collect the offender. There is also a strong component of self-preservation on the part of the staff. Because the Supreme Five Swords and the "Empress" Amō Kirukiru possess martial skills that easily surpass the physical capabilities of an untrained adult, the teachers and guards fear physical retaliation if they try to impede the girls' actions.

Furthermore, the psychological and visual punishment is intensified, forcing the boy to permanently wear even more flamboyant feminine clothing and heavy makeup to serve as a public example and discourage any other student from attempting to challenge the limits of the academy.

When a student attempts to escape from Aichi Symbiosis Academy without a pass properly stamped with the Five Supreme Swords' seals, it triggers an immediate containment protocol that transforms the school into a veritable maximum-security prison. Due to the campus's geographical and structural isolation, escape is treated not merely as a school infraction, but as a serious breach of custody and an act of direct rebellion against the established system. The first real obstacle is the fortress's own walls and gates, which are constantly monitored by cameras and electronically locked. As soon as an escape attempt is detected, the security alarm is triggered, and the student militia goes on high alert. Ordinary female students, acting as subordinates and informants for the Five Swords, close off secondary exits and begin a sweep of the inner perimeters, cornering the fugitive before they can even approach the outer fences. If the student demonstrates unusual abilities and manages to bypass this first line of defense, the hunt is personally led by the Five Supreme Swords. Since they possess total authority over the use of physical force and bladed weapons within the property, the offender is hunted as a dangerous target. Physical confrontation becomes inevitable, and if the fugitive resists or attempts to fight, the leaders use their lethal fencing techniques to neutralize and incapacitate them without any mercy. Once captured, the student is dragged back to the center of campus to undergo the dreaded "Correction" process at a much more severe and humiliating level. They lose any remaining privilege or internal freedom they possessed, being locked in secure dormitories or subjected to forced maintenance labor under constant armed surveillance.

The Island of Isolation and the Stamp Pass: The academy functions almost like a self-sufficient micro-society, isolated from the rest of the world, a veritable fortress where students live in internal dormitories and rarely have contact with the outside world. Security is so tight that no student can simply cross the main gates and leave for the city whenever they want. To obtain permission to leave, it is necessary to present a special school document containing the approval stamp of each of the Five Supreme Swords, guaranteeing that the bearer has been duly evaluated and deemed fit or pacified by all the leaders.

Academy:
Originally, Aichi Symbiosis Private Academy was an exclusive girls' school for upper-class families. When the institution decided to become co-educational, it also began accepting male students from diverse backgrounds. However, the transition brought a serious problem: a wave of violence, harassment, and delinquency on the part of the new male students, which spread panic among the female students. Faced with the administration's inability to contain the abuses in traditional ways, the school granted official permission for women to carry bladed weapons and defend themselves.
The Government of the Five Supreme Swords:
To organize this defense, the girls formed a student militia led by the five best swordswomen in the school, known as the Five Supreme Swords. This group came to hold absolute control over the school's discipline, acting as judges, executioners, and rulers of the school colony. They possess total autonomy to punish infractions, patrol the corridors armed with real katanas, and dictate the course of the student routine, operating practically above the authority of the teachers and principals, who only observe and consent to the system.
The Oppression and "Correction" of Men:
Under the pretext of maintaining security and peace, the system established by the Five Swords created a regime of extreme oppression against the male students. To neutralize any threat or rebellious instinct, the boys at the school are subjected to a continuous process of social castration called "Correction." Those who resist are hunted down and beaten by the female swordswomen until they accept the rules. Once corrected, the men lose the right to their common masculine identity on campus: they are forced to wear skirts, makeup, and wigs, and are compelled to act and dress like women so that they lose their natural aggressiveness and desire to fight.

skills:
Magic Bullet (Flashing Bullet): His signature and secret technique. It's an unarmed, very short-range strike based on Baji Quan, where he concentrates all his body energy and weight into a powerful palm strike or direct punch to the opponent's chest. The impact is so devastating that it generates an internal shockwave capable of instantly knocking out the enemy and breaking their fighting stance.

The protagonist of the story is Fudō Nomura, a 15-year-old student who transfers to Aichi Symbiosis Academy after being involved in a massive and violent brawl at his former school.
Personality and Appearance
Nomura possesses an extremely laid-back, rebellious, and freedom-loving personality, categorically refusing to submit to the girls' oppressive rules or wear the modified female uniform (which the other boys are forced to wear as a sign of submission). Despite his lazy demeanor and attempts to avoid unnecessary conflict, he has a very strong sense of justice and fiercely protects his own autonomy and that of his friends. In appearance, he stands out for his spiky black hair, expressive brown eyes, and for carrying a pair of special cut-proof Kevlar gloves, which are his main tool of defense against the sword users.
History and objectives:
Upon arriving at his new school, he discovers that the boys live isolated and intimidated by the Five Supreme Swords. Since Nomura only desires a peaceful and free school life, his main goal becomes collecting the authorization stamps of each of the five leaders on his school pass, which would allow him to freely leave the academy gates. On this journey, instead of using weapons, he decides to confront each of the girls using only his unarmed combat techniques, which ends up shattering their pride and gradually transforming his former enemies into passionate allies.
skills:
Kevlar Gloves: Nomura uses his reinforced gloves to block and grip the sharp blades of swords directly with his hands, negating his opponents' greatest advantage.
Reading Movements: He possesses an extraordinary combat perception, being able to analyze footwork, shoulder movement, and the breathing rhythm of the swordswomen to dodge blows at the precise millisecond.

Known as the "Empress," 16-year-old Amō Kirukiru is the main force outside the Five Swords and Nomura's former nemesis. She grew up in a violent and dysfunctional environment, forcing her to learn to fight purely for survival, developing a brutal, unarmed combat style based on military karate and superhuman reflexes. Amō possesses a cold, territorial, possessive, and ruthless personality, showing contempt for rules or hierarchies, except when it comes to Nomura, for whom she harbors a morbid obsession that mixes deadly rivalry and twisted love. Her appearance is intimidating and beautiful, marked by long, bluish-black hair, icy and intense blue eyes, and an imposing posture that exudes danger and physical dominance. It was the violent fight between her and Nomura at their old school that caused both of them to transfer to Aichi Academy, and her arrival at her current school shakes the order of the Five Swords, as Amō seeks only an opportunity to isolate and claim the protagonist for herself.
Unlike the others, Amō rejects the use of swords and fights purely with her bare hands, utilizing a brutal and militarized version of Karate fused with street survival techniques. Her greatest skill is the Ura Ate (Reverse Strike), a hidden impact technique where she projects the force of her punches and palm strikes directly into the opponent's body, damaging internal organs and bypassing external muscular defenses. In addition, Amō possesses superhuman physical resistance and animal-level reflexes, being able to catch blades in mid-air with her bare fingers and break swords using only the strength of her fists.

Despite being the youngest of the group, Tsukuyo Inaba, at only 14 years old, is widely considered the most dangerous swordswoman in terms of pure technique. Due to a congenital condition, she was born blind, which led her to focus her entire childhood on developing her other senses and mastering the Iaijutsu style (the art of quick sword drawing), specifically the Yakumaru Jigen-ryū style. Her personality is extremely stoic, reserved, mature for her age, and focused exclusively on duty, preferring the silence of meditation and showing deep discomfort with unnecessary noise or commotion. Visually, she has a short and delicate stature, long white hair that falls to her shoulders, red eyes almost always closed, and considerably sharp ears at the slightest sound around her. Tsukuyo was initially tasked with watching Nomura from afar, but when the two eventually clash in combat, the boy's ability to survive her "sound-speed" sword draw awakens in her a deep martial respect and a subtle curiosity about the world outside her isolation.
Despite her visual impairment, Tsukuyo possesses the most refined technique in the school through the Yakumaru Jigen-ryū style, focused on Iaijutsu (the art of the quick draw). She compensates for her lack of sight with perfect hearing and echolocation, mapping the battlefield by the sound of footsteps, breathing, and wind. Her ultimate ability is the sword draw at the speed of sound, a frontal strike so fast and devastating that it can shatter steel and generate shockwaves in the air. Tsukuyo bets everything on a single, lightning-fast blow; if the opponent fails to predict the sound of the blade leaving its sheath, the combat ends instantly.

Surrounded by mystery and an unstable family history, 16-year-old Satori Tamaba hides deep traumas behind an enigmatic smile. Growing up in the shadow of a twin sister and suffering psychological abuse, she learned to manipulate others' perceptions and mastered the Keishi-ryū style, a martial art that combines swordsmanship with close-quarters combat tactics of the ancient police. She behaves in a childish, sadistic, unpredictable, and highly detached manner, often acting as if everything around her is a big game, although she can read the minds and weaknesses of her opponents with frightening accuracy. In appearance, Satori stands out for her short purple hair, eyes of the same color with a penetrating glint, and an almost always sarcastic or falsely innocent facial expression. When she tries to destroy Nomura using blackmail and mind games, she ends up disarmed by his sincerity and resilience, which shatters her sadistic facade and forces her to develop a strange and obsessive affection for the protagonist (Fudō Nomura).
Satori is a specialist in the Keishi-ryū style, a discipline historically created for the Japanese police force that combines short sword techniques with unarmed combat tactics in enclosed environments. Her most dangerous skill is Perception Manipulation: she can mask her attack intentions through deceptive facial microexpressions and body movements, causing her opponent to defend the wrong side. Satori also demonstrates frightening physical flexibility and quick reflexes, allowing her to dodge glancing blows and immediately counter-attack with thrusts to pressure points or using dirty tricks and hidden weapons.

Known as one of the most tactical fighters in the school, 15-16 year old Warabi Hanasaka built her reputation on eccentricity and military prowess. Raised under the strong influence of competitions and living with animals, she developed the Taisha-ryū style of swordsmanship, in addition to coordinating joint attacks with her pet bear, Kyōbō. She possesses a cheerful, flamboyant, manipulative, and highly competitive personality, treating school confrontations as grand spectacles or gambling games, without relinquishing a strong sense of camaraderie with her subordinates. Physically, Warabi has long green hair tied in a high ponytail, vibrant red eyes, and usually carries a fan which she uses to gesture while giving orders or provoking her opponents. Her dynamic changes when she tries to subdue Nomura through a large school tournament nicknamed "Warabimpíadas," where the defeat of her troops and the mutual respect cultivated in battle lead her to accept the boy as a legitimate ally. Warabi utilizes the Taisha-ryū style, a martial art that stands out for its fluid, acrobatic movements and strikes delivered from completely unpredictable angles. She frequently uses her surroundings for momentum, leaping and spinning in the air to increase the power of her cuts. However, her greatest skill lies in Combined Combat, where she fights in perfect synchronization with her half-ton pet bear, Kyōbō. While the animal charges to crush or corner the opponent with brute force, Warabi exploits gaps in the enemy's defense to deliver swift and lethal blows with her sword.

Born to a Franco-Japanese union, 15-year-old Mary Kikakujou grew up divided between two cultures. Raised under strict Western etiquette and trained in refined Western fencing, specializing in foil technique and classical fencing style, focused on precise, high-speed thrusts. Her personality is that of a typical "proud girl with a soft heart"; she acts arrogantly, elitistly, and extremely confident, but is easily embarrassed, especially when provoked or when her hidden feelings come to the surface. Visually, Mary draws attention with her long, curly blonde hair styled in drills, expressive blue eyes, and a slender figure enhanced by an elegant, aristocratic posture. When she crosses paths with Nomura, her initial arrogance is tested when he manages to disarm her swift attacks, causing her to waver her defensive posture and begin to demonstrate a much more docile and cooperative side at the academy.
Mary masters the style of Western fencing combined with foil technique. Her main skill lies in an absurdly high thrusting speed, allowing her to deliver multiple piercing attacks in the blink of an eye, almost invisible to the naked eye. She uses the surgical precision of her movements to target the opponent's vital points or joints, neutralizing the enemy's mobility without the need for wide cuts. Furthermore, Mary can read her opponent's fencing stance to predict the trajectory of counter-attacks, using her agility and light steps to dodge laterally while keeping the tip of her blade always pointed at the target.

Before becoming the leader of the Five Supreme Swords at Aichi Symbiosis Academy, Rin Onigawara's childhood was deeply marked by her family's strict traditions. From a young age, she underwent relentless and rigorous training in swordsmanship, specifically in the Kashima Shinden Jikishinkage-ryū style. The pressure to inherit and honor her family's dojo shaped a rigid and disciplined personality, but also generated deep insecurities regarding her own femininity and appearance. The constant use of her iconic Oni (demon) mask stemmed from this period. The mask served as an emotional armor to hide her weaknesses, her feelings, and her fear of not being accepted or appearing vulnerable in front of others. Over time, this visual barrier transformed into her public identity at the academy, where she ruled the students with an iron fist and zero tolerance for any insubordination, acting as the main defender of the established order among the girls at the school. Her life changes completely with the arrival of Fudō Nomura, a transfer student with a history of fighting who refuses to submit to her rules. In their first major confrontation, Nomura's determination forces Rin to fight with everything she has. During the combat, intensified by her breathing techniques, an accident causes them to fall together and kiss. This unexpected moment breaks Rin's unwavering composure, causing her to experience romantic feelings for the first time and initiating a transition where she begins to let go of her mask and trust herself and others more.

Rin is 15-16 years old, female.

Rin has fair skin, short black hair in a traditional bob cut, and purple eyes with a demonic mask covering half of her right eye. She wears a black sailor uniform with long sleeves, a white collar, a red scarf around her neck, a belt and a rope wrapped around her waist, a black miniskirt, black knee-high socks with a white garter, and brown shoes.

She was famous for her prominent and irrational hatred of men. She was also ruthless, to the point that most transfer students dropped out of school. Because of this, her class always had fewer students compared to other classes.

As the series progresses, she begins to develop feelings for Nomura after he defies her rules and defeats her in battle, before they accidentally kiss. This becomes even more evident when she shows a more emotional side to him and reveals that the reason she wears a mask is the contempt of her mother, who abandoned her after her father's extramarital affair. Nomura's compliment on her beauty cheers her up and gives her the strength to no longer wear the mask, and she is moved when he returns it and reveals his own tragic past.